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Nissan Ariya: Dtc/circuit Diagnosis

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Driver Controls / Wiper & Washer / Dtc/circuit Diagnosis

B2cb4-49 Rain Sensor

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms DTC detection condition
B2CB4–49 Rain sensor Diagnosis condition Power switch ON
Signal (terminal) —
Threshold Light & rain sensor internal malfunction.
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

Light & rain sensor

FAIL SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

  1. Power switch ON and wait for 2 second or more.

  2. Perform the “Self Diagnostic Result” mode of “BCM” using CONSULT.

  3. Check DTC.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

REPLACE LIGHT & RAIN SENSOR

Replace light & rain sensor. Refer to Removal & Installation.

>>

INSPECTION END

B2cb5-64 Rear Wiper

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC Detection Condition
B2CB5–64 Rear wiper Diagnosis condition Power switch ON
Signal (terminal) Rear wiper stop position signal
Threshold Rear wiper stop position signal malfunction status between rear wiper and BCM
Diagnosis delay time Does not change for more than 5 seconds

POSSIBLE CAUSE

  • Harness or connector (Rear wiper stop position circuit is open or shorted)

  • Rear wiper motor

  • BCM

FAIL-SAFE

Stop rear wiper power supply for 1 minute

DTC CONFIRMATION PROCEDURE

DTC CONFIRMATION

With CONSULT

  1. Erase DTC.

  2. Power switch ON.

  3. Rear wiper switch ON.

  4. Perform the “Self Diagnostic Result” of BCM with CONSULT, when passed 5 seconds or more after.

Is any DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO–1>>

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

NO–2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK FUSE

  1. Power switch OFF.

  2. Check that the following fuse is not blown (open).

    Location No. Capacity
    Fuse block (J/B) 56 15 A

Is the blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 2.

CHECK POWER SUPPLY CIRCUIT

  1. Disconnect BCM connector.

  2. Check voltage between BCM harness connector and ground.

    (+) (−)

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    B14 138 Ground 9–16 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK REAR WIPER MOTOR OUTPUT VOLTAGE

  1. Connect BCM connector.

  2. Rear wiper switch OFF, and wait for 1 minute or more.

  3. Disconnect rear wiper motor connector.

  4. Power switch ON.

  5. With operating rear wiper switch, check voltage between rear wiper motor harness connector and ground.

    (+) (−) Condition

    Voltage

    (Approx.)
    Rear wiper motor
    Connector Terminal
    D138 3 Ground Rear wiper switch ON

    9–16 V

    (5 seconds*)

    *: When rear wiper motor connector is disconnected and rear wiper switch is ON for more than 5 seconds, BCM stops the power supply according to rear wiper motor protection function. To perform the check again, turn rear wiper switch OFF, wait for 1 minute or more, and then perform the check.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

CHECK REAR WIPER MOTOR CIRCUIT

  1. Power switch OFF.

  2. Disconnect BCM connector.

  3. Check continuity between BCM harness connector and rear wiper motor harness connector.

    BCM Rear wiper motor Continuity
    Connector Terminal Connector Terminal
    B15 148 D138 3 Existed

  4. Check continuity between rear wiper motor harness connector and ground.

    Rear wiper motor — Continuity
    Connector Terminal
    D138 3 Ground Not existed

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK REAR WIPER MOTOR (AUTO STOP) OUTPUT VOLTAGE

Check voltage between rear wiper motor harness connector and ground.

(+) (−) Condition

Voltage

(Approx.)
Rear wiper motor
Connector Terminal
D138 2 Ground Rear wiper Rear wiper stop position 0–1 V
Except rear wiper stop position 9–16 V

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK REAR WIPER MOTOR (AUTO STOP) CIRCUIT

  1. Power switch OFF.

  2. Disconnect BCM connector.

  3. Check continuity between BCM harness connector and rear wiper motor harness connector.

    BCM Rear wiper motor Continuity
    Connector Terminal Connector Terminal
    B15 103 D138 2 Existed

  4. Check continuity between rear wiper motor harness connector and ground.

    Rear wiper motor — Continuity
    Connector Terminal
    D138 2 Ground Not existed

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK REAR WIPER MOTOR GROUND OPEN CIRCUIT

Check continuity between rear wiper motor harness connector and ground.

Rear wiper motor — Continuity
Connector Terminal
D138 1 Ground Existed

Is the inspection result normal?

YES>>

Replace rear wiper motor. Refer to Removal & Installation.

NO>>

Repair or replace harness.

Light & Rain Sensor

Component Function Check

CHECK FRONT WIPER AUTO OPERATION

  1. Clean light & rain sensor detection area of windshield fully.

  2. When the front wiper switch is turned to AUTO position, front wiper operates once regardless of a rainy condition.

Is front wiper (AUTO) operation normally?

YES>>

Light & rain sensor circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK FUSE

  1. Power switch OFF.

  2. Check that the following fuse is not blown (open).

    Location No. Capacity
    Fuse block (J/B) 53 10 A
     

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the cause of blown (open).

NO>>

GO TO 2.

CHECK LIGHT & RAIN SENSOR POWER SUPPLY

  1. Disconnect light & rain sensor connector.

  2. Check voltage between light & rain sensor harness connector and ground.

    (+) (−)

    Voltage

    (Approx.)
    Light & rain sensor
    Connector Terminal
    R5 1 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK LIGHT & RAIN SENSOR GROUND CIRCUIT

  1. Check continuity between light & rain sensor harness connector and ground.

    Light & rain sensor — Continuity
    Connector Terminal
    R5 3 Ground Existed

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK LIN COMMUNICATION SIGNAL

  1. Connect light & rain sensor connector.

  2. Power switch ON.

  3. Check signal between light & rain sensor harness connector and using an oscilloscope.

    (+) (−) Signal
    Light & rain sensor
    Connector Terminal
    R5 2 Ground

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

GO TO 5.

CHECK LIN COMMUNICATION CIRCUIT

  1. Power switch OFF.

  2. Disconnect light & rain sensor and BCM connector.

  3. Check continuity between BCM harness connector and light & rain sensor harness connector.

    BCM Light & rain sensor Continuity
    Connector Terminal Connector Terminal
    M8 25 R5 2 Existed

  4. Check continuity between light & rain sensor harness connector and ground.

    Light & rain sensor — Continuity
    Connector Terminal
    R5 2 Ground Nor existed

Is the inspection result normal?

YES>>

Replace light & rain sensor. Refer to Removal & Installation.

NO>>

Repair or replace harness.

Front Wiper Motor Lo Circuit

Component Function Check

CHECK FRONT WIPER LO OPERATION

CONSULT ACTIVE TEST

  1. Power switch ON.

  2. Select “Front wiper” of “BCM” active test item.

  3. With operating the test item, check front wiper operation.

    Low : Front wiper (LO) operation

Is the inspection result normal?

YES>>

Front wiper motor LO circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK FRONT WIPER MOTOR (LO) OUTPUT VOLTAGE

  1. Power switch OFF.

  2. Disconnect front wiper motor connector.

  3. Power switch ON.

  4. Turn front wiper switch to LO.

  5. Check voltage between front wiper motor harness connector and ground.

    (+) (−) Condition

    Voltage

    (Approx.)
    Front wiper motor
    Connector Terminal
    E123 3 Ground Front wiper switch LO

    6 − 16 V

    (10 seconds*)
    *: According to front wiper protection function, IPDM E/R supplies voltage for 10 seconds (6 − 16 V) and then stops for 20 seconds (0 − 1 V). This operation occurs repeatedly.

Is the inspection result normal?

YES>>

Replace front wiper motor. Refer to Removal & Installation.

NO>>

GO TO 2.

CHECK FRONT WIPER MOTOR (LO) CIRCUIT

  1. Turn front wiper switch to OFF.

  2. Power switch OFF.

  3. Disconnect IPDM E/R connector.

  4. Check continuity between IPDM E/R harness connector and front wiper motor harness connector.

    IPDM E/R Front wiper motor Continuity
    Connector Terminal Connector Terminal
    E38 22 E123 3 Existed

  5. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R — Continuity
    Connector Terminal
    E38 22 Ground Not existed

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Front Wiper Stop Position Signal Circuit

Component Function Check

CHECK FRONT WIPER STOP POSITION SIGNAL

CONSULT DATA MONITOR

  1. Power switch ON.

  2. Select “Front wiper stop position” of “IPDM E/R” data monitor item.

  3. Operate the front wiper.

  4. With the front wiper operation, check the monitor status.

    Monitor item Condition Monitor status
    Front wiper stop position Front wiper motor Front wiper stop position Stop position
    Except front wiper stop position Active

Is the inspection result normal?

YES>>

Front wiper stop position signal circuit is normal.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK IPDM E/R OUTPUT VOLTAGE

  1. Power switch OFF.

  2. Disconnect front wiper motor connector.

  3. Power switch ON.

  4. Check voltage between front wiper motor harness connector and ground.

    (+) (−)

    Voltage

    (Approx.)
    Front wiper motor
    Connector Terminal
    E123 4 Ground 6 - 16 V

Is the inspection result normal?

YES>>

Replace front wiper motor. Refer to Removal & Installation.

NO>>

GO TO 2.

CHECK FRONT WIPER MOTOR (AUTO STOP) CIRCUIT

  1. Power switch OFF.

  2. Disconnect IPDM E/R connector.

  3. Check continuity between IPDM E/R harness connector and front wiper motor harness connector.

    IPDM E/R Front wiper motor Continuity
    Connector Terminal Connector Terminal
    E40 39 E123 4 Existed

  4. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R — Continuity
    Connector Terminal
    E40 39 Ground Not existed

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

Front Wiper Motor Ground Circuit

Diagnosis Procedure

CHECK FRONT WIPER MOTOR GROUND CIRCUIT

  1. Power switch OFF.

  2. Disconnect front wiper motor connector.

  3. Check continuity between front wiper motor harness connector and ground.

    Front wiper motor — Continuity
    Connector Terminal
    E123 2 Ground Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace harness.

Front Washer Circuit

Diagnosis Procedure

COMBINATION SWITCH INSPECTION

Check combination switch. Refer to Symptom Table.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace the malfunctioning part.

CHECK WASHER PUMP FUSE

  1. Power switch OFF.

  2. Check that the following fuse is not blown (open).

    Location No. Capacity
    IPDM E/R 139 15A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the cause of blown (open).

NO>>

GO TO 3

CHECK FRONT WASHER PUMP RELAY OUTPUT VOLTAGE

  1. Disconnect front washer pump relay connector.

  2. Power switch ON.

  3. Check voltage between front washer pump relay harness connector and ground.

    (+) (−)

    Voltage

    (Approx.)
    Front washer pump relay
    Connector Terminal
    E107 1 Ground 6 – 16 V
    5

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

CHECK FRONT WASHER PUMP RELAY CIRCUIT 1

  1. Power switch OFF.

  2. Disconnect IPDM E/R connector.

  3. Check continuity between IPDM E/R harness connector and front washer pump relay harness connector.

    IPDM E/R Front washer pump relay Continuity
    Connector Terminal Connector Terminal
    E38 21 E107 1 Existed
    5

  4. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R — Continuity
    Connector Terminal
    E38 21 Ground Not existed

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK FRONT WASHER PUMP RELAY CIRCUIT 2

  1. Power switch OFF.

  2. Connect front washer pump relay connector.

  3. Power switch ON.

  4. Check voltage between front washer pump relay harness connector and ground.

    (+) (−) Condition

    Voltage

    (Approx.)
    Front washer pump relay
    Connector Terminal
    E107 2 Ground Front washer switch ON 0 – 1 V
    OFF 6 – 16 V

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK FRONT WASHER PUMP RELAY CIRCUIT 3

  1. Power switch OFF.

  2. Disconnect IPDM E/R connector and front washer pump relay connector.

  3. Check continuity between IPDM E/R harness connector and front washer pump relay harness connector.

    IPDM E/R Front washer pump relay Continuity
    Connector Terminal Connector Terminal
    E37 5 E107 2 Existed

  4. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R — Continuity
    Connector Terminal
    E37 5 Ground Not existed

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK FRONT WASHER PUMP RELAY

Check front washer pump relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Replace front washer pump relay.

CHECK WASHER PUMP CIRCUIT 1

  1. Disconnect washer pump connector.

  2. Check continuity between washer pump harness connector and front washer pump relay harness connector.

    For Canada
    Washer pump Front washer pump relay Continuity
    Connector Terminal Connector Terminal
    E121 1 E107 3 Existed
    Except for Canada
    Washer pump Front washer pump relay Continuity
    Connector Terminal Connector Terminal
    E120 1 E107 3 Existed

  3. Check continuity between front washer pump relay harness connector and ground.

    Front washer pump relay — Continuity
    Connector Terminal
    E107 3 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

Repair or replace harness.

CHECK WASHER PUMP CIRCUIT 2

  1. Disconnect rear washer pump relay connector.

  2. Check continuity between washer pump harness connector and rear washer pump relay harness connector.

    For Canada
    Washer pump Rear washer pump relay Continuity
    Connector Terminal Connector Terminal
    E121 2 E127 3 Existed
    Except for Canada
    Washer pump Rear washer pump relay Continuity
    Connector Terminal Connector Terminal
    E120 2 E127 3 Existed

  3. Check continuity between rear washer pump relay harness connector and ground.

    Rear washer pump relay — Continuity
    Connector Terminal
    E127 3 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Repair or replace harness.

CHECK REAR WASHER PUMP RELAY

Check rear washer pump relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

Replace rear washer pump relay.

CHECK FRONT WASHER PUMP GROUND OPEN CIRCUIT

Check continuity between rear washer pump rear harness connector and ground.

Rear washer pump relay — Continuity
Connector Terminal
E127 4 Ground Existed

Is the inspection result normal?

YES>>

Replace washer pump. Refer to Removal & Installation.

NO>>

Repair or replace harness.

Component Inspection

CHECK FRONT WASHER PUMP RELAY

  1. Power switch OFF.

  2. Remove front washer pump relay.

  3. Check continuity between front washer pump relay terminals.

    Terminal Condition Continuity
    Front washer pump relay
    3 5 12 V direct current supply between terminals 1 and 2. Existed
    No current supply Not existed
    4 12 V direct current supply between terminals 1 and 2. Not existed
    No current supply Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace front washer pump relay.

Washer Level Swtich Circuit

Diagnosis Procedure

CHECK WASHER LEVEL SWITCH CIRCUIT

  1. Disconnect combination meter and washer level switch connector.

  2. Check continuity between combination meter harness connector and washer level switch harness connector.

    Combination meter Washer level switch Continuity
    Connector Terminal Connector Terminal
    M98 15 E119 1 Existed

  3. Check continuity between washer level switch harness connector and ground.

    Washer level switch — Continuity
    Connector Terminal
    E119 1 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

CHECK WASHER LEVEL SWITCH GROUND OPEN CIRCUIT

Check continuity between washer level switch harness connector and ground.

Washer level switch — Continuity
Connector Terminal
E119 2 Ground Existed

Is the inspection result normal?

YES>>

Replace washer level switch. Refer to Removal & Installation.

NO>>

Repair or replace harness.

 
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Nissan Ariya (FE0) 2023-2025 Service & Repair Manual

Dtc/circuit Diagnosis

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