Nissan Ariya: Dcdc (dc/dc Converter)

• P1aa5-A2 Control Unit Supply Voltage
• P1aa6-9e Input Voltage Sensor/ecu Switch
• P1aa6-9f Input Voltage Sensor/ecu Switch
• P1aa6-A2 Input Voltage Sensor/ecu Switch
• P1aa6-A3 Input Voltage Sensor/ecu Switch
• P1aa7-A2 Voltage Supply Error
• P1aa7-A3 Voltage Supply Error
• P1aa8-A2 Voltage Supply Error
• P1aa8-A3 Voltage Supply Error
• P1aa9-21 Low Voltage Current Sensor Error 1
• P1aa9-22 Low Voltage Current Sensor Error 1
• P1aa9-48 Low Voltage Current Sensor Error 1
• P1aa9-64 Low Voltage Current Sensor Error 1
• P1aaa-21 Low Voltage Current Sensor Error 2
• P1aaa-22 Low Voltage Current Sensor Error 2
• P1aaa-48 Low Voltage Current Sensor Error 2
• P1aaa-64 Low Voltage Current Sensor Error 2
• P1aab-18 High Voltage Current Sensor Error 1
• P1aab-19 High Voltage Current Sensor Error 1
• P1aab-64 High Voltage Current Sensor Error 1
• P1aac-18 High Voltage Current Sensor Error 2
• P1aac-19 High Voltage Current Sensor Error 2
• P1aac-64 High Voltage Current Sensor Error 2
• P1aad-18 High Voltage Current Sensor Error
• P1aad-19 High Voltage Current Sensor Error
• P1aad-48 High Voltage Current Sensor Error
• P1aad-49 High Voltage Current Sensor Error
• P1aad-64 High Voltage Current Sensor Error
• P1aae-31 Temperature Sensor/system Error 1
• P1aae-39 Temperature Sensor/system Error 1
• P1aae-3a Temperature Sensor/system Error 1
• P1aae-4b Temperature Sensor/system Error 1
• P1aaf-31 Temperature Sensor/system Error 2
• P1aaf-39 Temperature Sensor/system Error 2
• P1aaf-3a Temperature Sensor/system Error 2
• P1aaf-4b Temperature Sensor/system Error 2
• P1ab0-64 Coolant Temperature
• P1ab1-16 Low Voltage Sensor Error
• P1ab1-17 Low Voltage Sensor Error
• P1ab1-1c Low Voltage Sensor Error
• P1ab1-49 Low Voltage Sensor Error
• P1ab2-16 Low Voltage Sensor Error
• P1ab2-17 Low Voltage Sensor Error
• P1ab2-48 Low Voltage Sensor Error
• P1ab2-64 Low Voltage Sensor Error
• P1ab3-16 Low Rectifier Voltage Sensor Error 1
• P1ab3-17 Low Rectifier Voltage Sensor Error 1
• P1ab3-64 Low Rectifier Voltage Sensor Error 1
• P1ab4-16 Low Rectifier Voltage Sensor Error 2
• P1ab4-17 Low Rectifier Voltage Sensor Error 2
• P1ab4-64 Low Rectifier Voltage Sensor Error 2
• P1ab5-64 High Voltage Sensor Error
• P1ab7-44 Memory Read Error
• P1ab8-44 Memory Write Error
• P1ab9-4b Coolant Temperature
• P1aba-16 Low Voltage Value
• P1aba-17 Low Voltage Value
• P1abb-17 Low Voltage Output Voltage
• P1abb-48 Low Voltage Output Voltage
• P1abb-49 Low Voltage Output Voltage
• P1abc-16 High Voltage Input Voltage
• P1abc-17 High Voltage Input Voltage
• P1abd-19 High Voltage Input Current Error 1
• P1abe-19 High Voltage Input Current Error 2
• P1abf-05 Internal Error
• P1ac0-48 Reverse Current
• P1ac1-F0 Low Voltage Reverse Current
• P1ac1-F1 Low Voltage Reverse Current
• P1ac1-F2 Low Voltage Reverse Current
• P1ac1-F3 Low Voltage Reverse Current
• P1ac1-F4 Low Voltage Reverse Current
• P1ac2-48 Low Voltage Overvoltage
• P1ac3-47 Internal Error
• P1ac3-F2 Internal Error
• P1ac3-F3 Internal Error
• P1ac3-Ff Internal Error
• P1ac4-87 Communication Error
• U1d50-88 Communication Error
• U2143-87 Can Comm Err (vcm/hcm)
• U2143-F1 Can Comm Err (vcm/hcm)
• U2143-F2 Can Comm Err (vcm/hcm)
• U2143-F3 Can Comm Err (vcm/hcm)
• U2143-F4 Can Comm Err (vcm/hcm)
• U2143-F5 Can Comm Err (vcm/hcm)
• U2143-F6 Can Comm Err (vcm/hcm)
• U2143-F7 Can Comm Err (vcm/hcm)
• U2143-F8 Can Comm Err (vcm/hcm)
• U2143-F9 Can Comm Err (vcm/hcm)
• U2143-Fa Can Comm Err (vcm/hcm)
• U2143-Fb Can Comm Err (vcm/hcm)
• U2143-Fc Can Comm Err (vcm/hcm)
• U2143-Fd Can Comm Err (vcm/hcm)
• U2143-Fe Can Comm Err (vcm/hcm)
• U2144-86 Can Communication
• U2144-87 Can Communication
• U2144-8f Can Communication
• U215b-86 Can Comm Err (ipdm E/r)
• U215b-87 Can Comm Err (ipdm E/r)
• U215b-8f Can Comm Err (ipdm E/r)
• U2a0f-88 Communication Error

P1aa5-A2 Control Unit Supply Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA5	A2	Control unit supply voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	DC/DC converter internal voltage
			Threshold	DC/DC converter internal voltage is less than 6.1 V
			Detection time	1 second

POSSIBLE CAUSE

• 12 V battery

• Harness and connector

• DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK 12V BATTERY

Check 12V battery. Refer to Work Flow.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace 12V battery. Refer to 12V BATTERY : Removal & Installation.

CHECK DC/DC CONVERTER CAN COMMUNICATION LINE

Check DC/DC converter CAN communication line installation condition visually and tactually.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM SELF-DIAGNOSIS OF VCM

With CONSULT

1. Power switch ON.

2. Check “self-diagnostic result” in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Perform the trouble diagnosis for the detected DTC.

NO>>

GO TO 4.

CHECK DC/DC CONVERTER OUTPUT VOLTAGE

Check voltage between 12V battery plus terminal and ground.

＋		-	Voltage
12V battery
12V battery plus terminal		Ground	Approximately 13 - 15.5 V

Is the inspection result normal

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

GO TO 5.

CHECK DC/DC CONVERTER 12V BATTERY VOLTAGE

＋		−	Voltage
DC/DC converter
Connector	Terminal
H4	7	Ground	12V battery voltage

YES>>

GO TO 6.

NO>>

GO TO 7.

CHECK DC/DC CONVERTER GROUND CIRCUIT

Check for continuation between the metal parts of the DC/DC converter and ground.

Is there continuation?

YES>>

Perform trouble cause simulation test. Refer to Intermittent Incident.

NO>>

Repair or replace error-detected parts.

CHECK FUSIBLE LINK

Check that the fusible link below is not blown.

Fusible link number	Capacity
A	450 A

Is the fusible link blown?

YES>>

Replace the fusible link after repairing the applicable circuit.

NO>>

GO TO 8.

CHECK 12V BATTERY CIRCUIT

1. Disconnect battery terminal integrated fusible link harness connector.

2. Disconnect DC/DC converter harness connector.

3. Check for continuation between battery terminal integrated fusible link and DC/DC converter.

   Battery terminal integrated fusible link		DC/DC converter		Continuity
   Connector	Terminal	Connector	Terminal
   H3	9	H4	7	Existing

4. Also check harness for short to ground.

Is the inspection result normal?

YES>>

Check 12V battery power supply circuit.

NO>>

Repair or replace error-detected parts.

P1aa6-9e Input Voltage Sensor/ecu Switch

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA6	9E	Input voltage sensor/ECU switch	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	DC/DC converter cannot be shut off. Alternatively the shut off time is too long.
			Detection time	—

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA6-9E detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa6-9f Input Voltage Sensor/ecu Switch

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA6	9F	Input voltage sensor/ECU switch	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	DC/DC converter shut off is too early.
			Detection time	—

POSSIBLE CAUSE

• DC/DC converter

• 12 V battery

NOTE:

This might be detected when the 12 V battery minus terminal is removed too early.

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK 12V BATTERY

Check 12V battery. Refer to Work Flow.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace 12V battery. Refer to 12V BATTERY : Removal & Installation.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA6-9F detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa6-A2 Input Voltage Sensor/ecu Switch

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA6	A2	Input voltage sensor/ECU switch	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA6-A2 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa6-A3 Input Voltage Sensor/ecu Switch

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA6	A3	Input voltage sensor/ECU switch	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA6-A3 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa7-A2 Voltage Supply Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA7	A2	Voltage supply error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA7-A2 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa7-A3 Voltage Supply Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA7	A3	Voltage supply error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA7-A3 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa8-A2 Voltage Supply Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA8	A2	Voltage supply error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA8-A2 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa8-A3 Voltage Supply Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA8	A3	Voltage supply error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA8-A3 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa9-21 Low Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA9	21	Low voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA9-21 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa9-22 Low Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA9	22	Low voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA9-22 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa9-48 Low Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA9	48	Low voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA9-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aa9-64 Low Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AA9	64	Low voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AA9-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaa-21 Low Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAA	21	Low voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAA-21 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaa-22 Low Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAA	22	Low voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAA-22 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaa-48 Low Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAA	48	Low voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAA-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaa-64 Low Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAA	64	Low voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAA-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aab-18 High Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAB	18	High voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Set the vehicle to the conditions below.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAB-18 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aab-19 High Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAB	19	High voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAB-19 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aab-64 High Voltage Current Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAB	64	High voltage current sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Set the vehicle to the conditions below.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAB-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aac-18 High Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAC	18	High voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Set the vehicle to the conditions below.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAC-18 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aac-19 High Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAC	19	High voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAC-19 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aac-64 High Voltage Current Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAC	64	High voltage current sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Set the vehicle to the conditions below.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAC-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aad-18 High Voltage Current Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAD	18	High voltage current sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAD-18 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aad-19 High Voltage Current Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAD	19	High voltage current sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAD-19 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aad-48 High Voltage Current Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAD	48	High voltage current sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM SELF-DIAGNOSIS OF VCM

With CONSULT

1. Power switch ON.

2. Check “self-diagnostic result” result in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Perform the trouble diagnosis for the detected DTC.

NO>>

GO TO 2.

PERFORM SELF-DIAGNOSIS OF HV BATTERY

With CONSULT

Check “self-diagnostic result” result in “HIGH VOLTAGE BATTERY” and “HIGH VOLTAGE BATTERY 2” using CONSULT.

Is DTC detected?

YES>>

Perform the trouble diagnosis for the detected DTC.

NO>>

GO TO 3.

PERFORM SELF-DIAGNOSIS OF INVERTER

With CONSULT

Check “self-diagnostic result” result in “MOTOR CONTROL” using CONSULT.

Is DTC detected?

YES>>

Perform the trouble diagnosis for the detected DTC.

NO>>

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAD-48 detected again?

YES>>

Replace DC/DC converter.Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aad-49 High Voltage Current Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAD	49	High voltage current sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAD-49 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aad-64 High Voltage Current Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAD	64	High voltage current sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Set the vehicle to the conditions below.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAD-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aae-31 Temperature Sensor/system Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAE	31	Temperature sensor/System error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAE-31 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aae-39 Temperature Sensor/system Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAE	39	Temperature sensor/System error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAE-39 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aae-3a Temperature Sensor/system Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAE	3A	Temperature sensor/System error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAE-3A detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aae-4b Temperature Sensor/system Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAE	4B	Temperature sensor/System error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An overheating error of the DC/DC converter is detected.
			Detection time	1 second

POSSIBLE CAUSE

• DC/DC converter coolant circuit

• DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Move the vehicle to a cool place, press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle and after that close the driver's side door and wait for at least 10 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC RELATED TO HIGH VOLTAGE COOLANT SYSTEM

Check “self-diagnostic result” result in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Inspect items of detected DTC. Refer to DTC Index.

NO>>

GO TO 2.

HIGH VOLTAGE COOLANT SYSTEM INSPECTION

Inspect high voltage coolant system for coolant amount and leakage. Refer to COOLANT : Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAE-4B detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaf-31 Temperature Sensor/system Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAF	31	Temperature sensor/System error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAF-31 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaf-39 Temperature Sensor/system Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAF	39	Temperature sensor/System error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAF-39 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaf-3a Temperature Sensor/system Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAF	3A	Temperature sensor/System error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAF-3A detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aaf-4b Temperature Sensor/system Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AAF	4B	Temperature sensor/System error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An overheating error of the DC/DC converter is detected.
			Detection time	1 second

POSSIBLE CAUSE

• DC/DC converter coolant circuit

• DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Move the vehicle to a cool place, press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle and after that close the driver's side door and wait for at least 10 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC RELATED TO HIGH VOLTAGE COOLANT SYSTEM

Check “self-diagnostic result” result in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Inspect items of detected DTC. Refer to DTC Index.

NO>>

GO TO 2.

HIGH VOLTAGE COOLANT SYSTEM INSPECTION

Inspect high voltage coolant system for coolant amount and leakage. Refer to COOLANT : Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AAF-4B detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab0-64 Coolant Temperature

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB0	64	Coolant temperature	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 5 minutes.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB0-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab1-16 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB1	16	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB1-16 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab1-17 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB1	17	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB1-17 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab1-1c Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB1	1C	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB1-1C detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab1-49 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB1	49	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB1-49 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab2-16 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB2	16	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB2-16 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab2-17 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB2	17	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB2-17 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab2-48 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB2	48	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB2-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab2-64 Low Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB2	64	Low voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB2-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab3-16 Low Rectifier Voltage Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB3	16	Low rectifier voltage sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB3-16 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab3-17 Low Rectifier Voltage Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB3	17	Low rectifier voltage sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to DTC Diagnosis Procedure.

Is DTC P1AB3-17 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab3-64 Low Rectifier Voltage Sensor Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB3	64	Low rectifier voltage sensor error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

NOTE:

Replace DC/DC converter only if the current DTC condition continues.

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB3-64 detected again?

YES-1>>

Current DTC: Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

YES-2>>

Past DTC: Erase the DTC, and then perform DTC confirmation procedure again.

NO>>

INSPECTION END

P1ab4-16 Low Rectifier Voltage Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB4	16	Low rectifier voltage sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB4-16 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab4-17 Low Rectifier Voltage Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB4	17	Low rectifier voltage sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB4-17 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab4-64 Low Rectifier Voltage Sensor Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB4	64	Low rectifier voltage sensor error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

NOTE:

Replace DC/DC converter only if the current DTC condition continues.

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB4-64 detected again?

YES-1>>

Current DTC: Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

YES-2>>

Past DTC: Erase the DTC, and then perform DTC confirmation procedure again.

NO>>

INSPECTION END

P1ab5-64 High Voltage Sensor Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB5	64	High voltage sensor error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Use the electrical loads below and check that the “DC/DC converter's output current” is displayed to be more than 25 A in the “DATA MONITOR” in “DC/DC CONVERTER”.

   Rear window defogger	ON
   Blower fan speed	MAX
   Wiper	ON

4. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB5-64 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab7-44 Memory Read Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB7	44	Memory read error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	—

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB7-44 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab8-44 Memory Write Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB8	44	Memory write error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	—

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB8-44 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ab9-4b Coolant Temperature

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AB9	4B	Coolant temperature	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An overheating error of the DC/DC converter is detected.
			Detection time	1 second

POSSIBLE CAUSE

• DC/DC converter coolant circuit

• DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Move the vehicle to a cool place, press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle and after that close the driver's side door and wait for at least 10 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC RELATED TO HIGH VOLTAGE COOLANT SYSTEM

Check “self-diagnostic result” result in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Inspect items of detected DTC. Refer to DTC Index.

NO>>

GO TO 2.

HIGH VOLTAGE COOLANT SYSTEM INSPECTION

Inspect high voltage coolant system for coolant amount and leakage. Refer to COOLANT : Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AB9-4B detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1aba-16 Low Voltage Value

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABA	16	Low voltage value	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	DC/DC converter output voltage is less than approximately 6.5 V
			Detection time	1 second

POSSIBLE CAUSE

• DC/DC converter

• 12 V battery

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK 12V BATTERY

Check 12V battery. Refer to Work Flow.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace 12V battery. Refer to 12V BATTERY : Removal & Installation.

CHECK DC/DC CONVERTER CAN COMMUNICATION LINE

Check DC/DC converter CAN communication line installation condition visually and tactually.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM SELF-DIAGNOSIS OF VCM

With CONSULT

1. Power switch ON.

2. Check “self-diagnostic result” result in “EV/HEV” using CONSULT.

Is DTC detected?

YES>>

Perform the trouble diagnosis for the detected DTC.

NO>>

GO TO 4.

CHECK DC/DC CONVERTER OUTPUT VOLTAGE

Check voltage between 12V battery plus terminal and ground.

＋	―	Voltage
12V battery
12V battery plus terminal	Ground	Approximately 13 - 15.5 V

Is the inspection result normal?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

GO TO 5.

CHECK DC/DC CONVERTER 12V BATTERY VOLTAGE

1. Power switch OFF.

2. Disconnect DC/DC converter harness connector.

3. Check voltage between DC/DC converter harness connector and ground.

   ＋		―	Voltage
   DC/DC converter
   Connector	Terminal
   H4	7	Ground	12V battery voltage

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 7.

CHECK DC/DC CONVERTER GROUND CIRCUIT

Check for continuation between the metal parts of the DC/DC converter and ground.

Is there continuation?

YES>>

Perform trouble cause simulation test. Refer to Intermittent Incident.

NO>>

Repair or replace error-detected parts.

CHECK FUSIBLE LINK

Check that the fusible link below is not blown.

Fusible link number	Capacity
A	450 A

Is the fusible link blown?

YES>>

Replace the fusible link after repairing the applicable circuit.

NO>>

GO TO 8.

CHECK 12V BATTERY CIRCUIT

1. Disconnect battery terminal integrated fusible link harness connector.

2. Disconnect DC/DC converter harness connector.

3. Check for continuation between battery terminal integrated fusible link and DC/DC converter.

   Battery terminal integrated fusible link		DC/DC converter		Continuity
   Connector	Terminal	Connector	Terminal
   H3	9	H4	7	Existing

4. Also check harness for short to ground.

Is the inspection result normal?

YES>>

Check 12V battery power supply circuit.

NO>>

Repair or replace error-detected parts.

P1aba-17 Low Voltage Value

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABA	17	Low voltage value	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	When it is detected that more than 15.7 V is applied to the low voltage side of the DC/DC converter
			Detection time	1 second

POSSIBLE CAUSE

• 12 V battery

• Other electrical components

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK 12V BATTERY

Check 12V battery. Refer to Work Flow.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace 12V battery. Refer to 12V BATTERY : Removal & Installation.

PERFORM FULL SELF-DIAGNOSIS

With CONSULT

1. Power switch ON.

2. Check if a power supply circuit DTC is detected at another control unit using CONSULT.

Is DTC detected?

YES>>

Check the detected DTC.

NO>>

Check 12V battery power supply circuit.

P1abb-17 Low Voltage Output Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABB	17	Low voltage output voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	When it is detected that more than 22.9V is applied to the low voltage side of the DC/DC converter
			Detection time	1 second

POSSIBLE CAUSE

• 12V battery

• Other electrical components

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK 12V BATTERY

Check 12V battery. Refer to Work Flow.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace 12V battery. Refer to 12V BATTERY : Removal & Installation.

PERFORM FULL SELF-DIAGNOSIS

With CONSULT

1. Power switch ON.

2. Check if a power supply circuit DTC is detected at another control unit using CONSULT.

Is DTC detected?

YES>>

Check the detected DTC.

NO>>

Check 12V battery power supply circuit.

P1abb-48 Low Voltage Output Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABB	48	Low voltage output voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABB-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abb-49 Low Voltage Output Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABB	49	Low voltage output voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABB-49 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abc-16 High Voltage Input Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABC	16	High voltage input voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	The input voltage to the DC/DC converter is below 215 V
			Detection time	1 second

POSSIBLE CAUSE

• ECU related to EV system

• High voltage harness

• DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY.

3. Check the displayed “INPUT VOLTAGE” in the “DATA MONITOR” of “DC/DC CONVERTER” using CONSULT.

Is it below 215 V?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

WARNING:

Hybrid vehicles and electric vehicles equipped with high voltage batteries may cause an electric shock or a short circuit if handled in an inappropriate way. When you inspect and service a Nissan Ariya vehicle, follow the work procedure and perform the correct tasks.

WARNING:

• When you inspect and service the high voltage wiring harnesses and components, make sure to remove the service plug in order to shut off the high voltage circuit.

• When you have removed the service plug, be sure to carry it in your pocket, or store it in the tool box in order to keep someone from accidentally connecting it during work.

• When performing high voltage system operation, be sure to wear insulating protective equipment.

• During tasks involving high voltage systems, clarify a person in charge of the tasks and do not let others touch the Nissan Ariya vehicle. When the vehicle is not being serviced, use protective items such as an electric-proof cover sheet for covering the high voltage components so as to keep someone from accidentally touching the Nissan Ariya vehicle.

• Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Setting the vehicle to the READY state with the service plug removed may cause malfunctioning. Avoid setting the Nissan Ariya vehicle to the READY state unless otherwise specified in the service manual.

CHECK DTC RELATED TO HIGH VOLTAGE SYSTEM

With CONSULT

1. Set the Nissan Ariya vehicle to READY and wait for at least 120 seconds.

2. Check DTC related to high voltage system using CONSULT.

Is DTC related to high voltage system detected?

YES>>

Check the detected DTC.

NO>>

GO TO 2.

PRECONDITIONING

WARNING:

Make sure to perform the procedure below before starting the work.

1. Disconnect the high voltage circuit. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

2. Check the voltage in the high voltage circuit. Refer to CHECK VOLTAGE IN HIGH VOLTAGE CIRCUIT : Precautions.

>>

GO TO 3.

CHECK HIGH VOLTAGE HARNESS-1

1. Disconnect the high voltage junction box high voltage harness connector.

2. Disconnect the inverter (front) high voltage harness connector.

3. Check for continuation of the high voltage harness between the high voltage junction box side connector and the inverter (front) side connector.

   High voltage junction box		Inverter (front)		Continuity
   Connector	Terminal	Connector	Terminal
   H10	N	H12	N	Existing
   	P		P

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

CHECK HIGH VOLTAGE HARNESS-2

1. Disconnect the Li-ion battery high voltage harness connector.

2. Check for continuation of the high voltage harness between the inverter (front) side connector and the Li-ion battery side connector.

   Inverter (front)		Li-ion battery		Continuity
   Connector	Terminal	Connector	Terminal
   H6	N	H5	37	Existing
   	P		38

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABC-16 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abc-17 High Voltage Input Voltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABC	17	High voltage input voltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	The input voltage to the DC/DC converter exceeds 462.5 V
			Detection time	1 second

POSSIBLE CAUSE

• ECU related to EV system

• High voltage harness

• DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check the displayed “INPUT VOLTAGE” in the “DATA MONITOR” of “DC/DC CONVERTER” using CONSULT.

Is it exceeding 462.5 V?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

WARNING:

Hybrid vehicles and electric vehicles equipped with high voltage batteries may cause an electric shock or a short circuit if handled in an inappropriate way. When you inspect and service a Nissan Ariya vehicle, follow the work procedure and perform the correct tasks.

WARNING:

• When you inspect and service the high voltage wiring harnesses and components, make sure to remove the service plug in order to shut off the high voltage circuit.

• When you have removed the service plug, be sure to carry it in your pocket, or store it in the tool box in order to keep someone from accidentally connecting it during work.

• When performing high voltage system operation, be sure to wear insulating protective equipment.

• During tasks involving high voltage systems, clarify a person in charge of the tasks and do not let others touch the Nissan Ariya vehicle. When the vehicle is not being serviced, use protective items such as an electric-proof cover sheet for covering the high voltage components so as to keep someone from accidentally touching the Nissan Ariya vehicle.

• Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Setting the vehicle to the READY state with the service plug removed may cause malfunctioning. Avoid setting the Nissan Ariya vehicle to the READY state unless otherwise specified in the service manual.

CHECK DTC RELATED TO HIGH VOLTAGE SYSTEM

With CONSULT

1. Set the Nissan Ariya vehicle to READY and wait for at least 120 seconds.

2. Check DTC related to high voltage system using CONSULT.

Is DTC related to high voltage system detected?

YES>>

Check the detected DTC.

NO>>

GO TO 2.

PRECONDITIONING

WARNING:

Make sure to perform the procedure below before starting the work.

1. Disconnect the high voltage circuit. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

2. Check the voltage in the high voltage circuit. Refer to CHECK VOLTAGE IN HIGH VOLTAGE CIRCUIT : Precautions.

>>

GO TO 3.

CHECK HIGH VOLTAGE HARNESS-1

1. Disconnect the high voltage junction box high voltage harness connector.

2. Disconnect the inverter (front) high voltage harness connector.

3. Check for continuation of the high voltage harness between the high voltage junction box side connector and the inverter (front) side connector.

   High voltage junction box		Inverter (front)		Continuity
   Connector	Terminal	Connector	Terminal
   H10	N	H12	N	Existing
   	P		P

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

CHECK HIGH VOLTAGE HARNESS-2

1. Disconnect the Li-ion battery high voltage harness connector.

2. Check for continuation of the high voltage harness between the inverter (front) side connector and the Li-ion battery side connector.

   Inverter (front)		Li-ion battery		Continuity
   Connector	Terminal	Connector	Terminal
   H6	N	H5	37	Existing
   	P		38

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABC-17 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abd-19 High Voltage Input Current Error 1

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABD	19	High voltage input current error 1	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABD-19 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abe-19 High Voltage Input Current Error 2

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABE	19	High voltage input current error 2	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABE-19 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1abf-05 Internal Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1ABF	05	Internal error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1ABF-05 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac0-48 Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC0	48	Reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC0-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac1-F0 Low Voltage Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC1	F0	Low voltage reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC1-F0 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac1-F1 Low Voltage Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC1	F1	Low voltage reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC1-F1 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac1-F2 Low Voltage Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC1	F2	Low voltage reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC1-F2 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac1-F3 Low Voltage Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC1	F3	Low voltage reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC1-F3 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac1-F4 Low Voltage Reverse Current

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC1	F4	Low voltage reverse current	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	—

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC1-F4 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac2-48 Low Voltage Overvoltage

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC2	48	Low voltage overvoltage	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output is stopped

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC2-48 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac3-47 Internal Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC3	47	Internal error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC3-47 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac3-F2 Internal Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC3	F2	Internal error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

NOTE:

If DTC P1AC3-F2 is displayed with P1AC3-F3, DC/DC converter output is stopped.

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC3-F2 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac3-F3 Internal Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC3	F3	Internal error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	1 second

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

DC/DC converter output current is stopped

NOTE:

If DTC P1AC3-F3 is displayed with P1AC3-F2, DC/DC converter output is stopped.

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC3-F3 detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac3-Ff Internal Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC3	FF	Internal error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error in the DC/DC converter internal system is detected.
			Detection time	—

POSSIBLE CAUSE

DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 1 second.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC3-FF detected again?

YES>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

NO>>

INSPECTION END

P1ac4-87 Communication Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
P1AC4	87	Communication error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

• DC/DC converter

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC P1AC4-87 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U1d50-88 Communication Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U1D50	88	Communication error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A CAN communication bus off error is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

• LBC

• IPDM E/R

FAIL-SAFE

DC/DC converter output voltage is fixed

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U1D50-88 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-87 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	87	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-87 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F1 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F1	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

• When the high voltage is below 30 V: The DC/DC converter is set to sleep state

• When the high voltage is more than 30 V: The DC/DC converter state is fixed to the state it was in before the DTC occurred

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F1 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F2 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F2	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F2 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F3 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F3	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F3 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F4 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F4	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F4 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F5 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F5	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	Signal cannot be sent to VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

DC/DC converter output voltage is fixed

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F5 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F6 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F6	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F6 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F7 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F7	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

• When the high voltage is below 30 V: The DC/DC converter is set to sleep state

• When the high voltage is more than 30 V: The DC/DC converter state is fixed to the state it was in before the DTC occurred

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F7 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F8 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F8	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F8 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-F9 Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	F9	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-F9 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-Fa Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	FA	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-FA detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-Fb Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	FB	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

DC/DC converter output voltage is fixed

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-FB detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-Fc Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	FC	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

DC/DC converter output voltage is fixed

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer toDTC Diagnosis Procedure.

Is DTC U2143-FC detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-Fd Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	FD	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

• When the high voltage is below 30 V: The DC/DC converter is set to sleep state

• When the high voltage is more than 30 V: The DC/DC converter state is fixed to the state it was in before the DTC occurred

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-FD detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2143-Fe Can Comm Err (vcm/hcm)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2143	FE	CAN communication error (VCM/HCM)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	An error signal is received from VCM.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

FAIL-SAFE

• When the high voltage is below 30 V: The DC/DC converter is set to sleep state

• When the high voltage is more than 30 V: The DC/DC converter state is fixed to the state it was in before the DTC occurred

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2143-FE detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2144-86 Can Communication

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2144	86	CAN communication (LBC)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the LBC is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• LBC

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2144-86 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2144-87 Can Communication

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2144	87	CAN communication (LBC)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the LBC is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• LBC

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2144-87 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2144-8f Can Communication

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2144	8F	CAN communication (LBC)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the LBC is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• LBC

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer toDTC Diagnosis Procedure.

Is DTC U2144-8F detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U215b-86 Can Comm Err (ipdm E/r)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U215B	86	CAN communication error (IPDM E/R)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the IPDM E/R is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• IPDM E/R

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U215B-86 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U215b-87 Can Comm Err (ipdm E/r)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U215B	87	CAN communication error (IPDM E/R)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the IPDM E/R is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• IPDM E/R

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U215B-87 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U215b-8f Can Comm Err (ipdm E/r)

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U215B	8F	CAN comm err (IPDM E/R)	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A communication error with the IPDM E/R is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• IPDM E/R

FAIL-SAFE

Not applicable

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U215B-8F detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END

U2a0f-88 Communication Error

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms	DTC detecting condition
U2A0F	88	Communication error	Diagnosis condition	READY, AUTO ACC or power switch ON
			Signal	—
			Threshold	A CAN communication bus off error is detected.
			Detection time	2 seconds

POSSIBLE CAUSE

• CAN communication circuit

• VCM

• LBC

• IPDM E/R

FAIL-SAFE

DC/DC converter output voltage is fixed

Confirmation Procedure

PRECONDITIONING

• Press the power switch OFF with the driver's side door open, get out of the Nissan Ariya vehicle, close the driver's side door and wait for at least 4 minutes.

  CAUTION:

  Since the auto ACC function causes the accessory power to be turned ON, do not perform any Nissan Ariya vehicle operation including locking the doors or opening and closing of the doors while waiting.

• Check that 12 V battery voltage is 11 V or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

2. Set the Nissan Ariya vehicle to READY and wait at least 2 seconds.

3. Check “self-diagnostic result” in “DC/DC CONVERTER” using CONSULT.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is DTC U2A0F-88 detected again?

YES>>

Perform trouble diagnosis for CAN communication circuit. Refer to Trouble Diagnosis Flow Chart.

NO>>

INSPECTION END