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Nissan

Nissan Ariya: Component Parts /circuit Diagnosis

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Electric Power Train / Ev Battery System :: 66kwh Li-Ion Battery / Component Parts /circuit Diagnosis

Power Supply and Ground Circuit (li-Ion Battery Controller) Nissan Ariya 2025

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

CHECK FUSE

Check the following fuse

Power supply Fuse No.
Main switch ON power supply (12V main relay power supply) 102

Is inspection result normal?

YES>>

GO TO 2.

NO>>

Replace the fuse after repairing the circuit that caused blown fuse.

PRECONDITIONING-1

  1. Turn power switch OFF.

  2. Remove the service plug. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

>>

GO TO 3.

CHECK LI-ION BATTERY GROUND CIRCUIT

  1. Disconnect Li-ion battery Nissan Ariya vehicle communication harness connector.

  2. Check the continuity between Li-ion battery vehicle communication harness connector and ground.

    + − Continuity
    Li-ion battery
    Connector Terminal
    E9 6 Ground Exist
    13
    20

Is inspection result normal?

YES>>

GO TO 4.

NO>>

Check and repair ground circuit. Refer to Wiring Diagram.

CHECK 12V BATTERY MAIN RELAY POWER SUPPLY

  1. Connect 12V battery negative terminal.

  2. Check the voltage between Li-ion battery Nissan Ariya vehicle communication harness connector and 12V main relay harness connector.

    + − Voltage
    Li-ion battery
    Connector Terminal
    E9 11 Ground 9 – 16 V

Is inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 5.

CHECK 12V MAIN RELAY POWER SUPPLY

Check continuity between Li-ion battery Nissan Ariya vehicle communication harness connector and 12V main relay harness connector.

+ −
Li-ion battery 12V main relay
Connector Terminal Connector Terminal
E9 11 E106 5

Is inspection result normal?

YES>>

Check 12V main relay. Refer to Diagnosis Procedure.

NO>>

Repair and replace malfunction parts.

PRECONDITIONING-2

WARNING:

Be sure to disconnect the high voltage. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

  1. Turn power switch OFF.

  2. Disconnect 12V battery negative terminal.

  3. Remove Li-ion battery from Nissan Ariya vehicle. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 7.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection of LBC harness connectors.

NOTE:

Pull the connector first then push the connector to check connection.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Repair harness connector connection.

CHECK CONTINUITY BETWEEN LI-ION BATTERY AND LBC

  1. Remove LBC. Refer to Removal & Installation.

  2. Check continuity between Li-ion battery Nissan Ariya vehicle communication harness connector and LBC harness connector.

    Li-ion battery LBC Continuity
    Connector Terminal Connector Terminal
    Z405 12 Z467 4 Exist
    6 10
    13 11
    20 12

  3. Check harnesses for short to ground and short to lines

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace Li-ion battery Nissan Ariya vehicle communication harness.

Cell Controller Communication Circuit Nissan Ariya

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING

WARNING:

Perform to disconnect the high voltage and check an residual voltage.

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

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

  3. Remove Li-ion battery from Nissan Ariya vehicle. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection condition of LBC and each cell controller harness connectors.

NOTE:

Pull connector first then push connector to check connection. Since if connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness connector connection.

CHECK CONTINUITY OF CELL CONTROLLER COMMUNICATION CIRCUIT HARNESS.

  1. Remove LBC and each cell controller harness connector.

  2. Check resistance value between LBC harness connector and each cell controller harness connector.

    LBC Cell controller No.1 Resistance value
    Connector Terminal Connector Terminal
    Z469 2 Z465 24 0 Ω approx.
    1 23
    6 18
    5 17

    Cell controller No.1 Cell controller No.2 Resistance value
    Connector Terminal Connector Terminal
    Z465 22 Z464 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.2 Cell controller No.3 Resistance value
    Connector Terminal Connector Terminal
    Z464 22 Z461 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.3 Cell controller No.4 Resistance value
    Connector Terminal Connector Terminal
    Z461 22 Z460 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.4 Cell controller No.5 Resistance value
    Connector Terminal Connector Terminal
    Z460 22 Z476 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.5 Cell controller No.6 Resistance value
    Connector Terminal Connector Terminal
    Z476 22 Z474 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.6 Cell controller No.7 Resistance value
    Connector Terminal Connector Terminal
    Z474 22 Z472 24 0 Ω approx.
    21 23
    32 18
    31 17

    Cell controller No.7 Cell controller No.8 Resistance value
    Connector Terminal Connector Terminal
    Z472 22 Z470 24 0 Ω approx.
    21 23
    32 18
    31 17

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace harness.

Cell Voltage Inspection Nissan Ariya 2023

Diagnosis Procedure

CHECK CELL VOLTAGE WITH DATA MONITOR

With CONSULT

  1. Power switch ON.

  2. Select “Data Monitor” of “HIGH VOLTAGE BATTERY”.

  3. Record “Maximum cell voltage”.

    NOTE:

    When the procedure is reached to replace the malfunction module, the module voltage adjustment is required. At that time, the maximum cell voltage is also required.

  4. Select “Cell voltage 01 - 96”.

  5. Check abnormal voltage of any cell by comparing each monitored value.

NOTE:

If power switch cannot be turned ON, the cell voltage is confirmed by recorded "FFD".

Is there any abnormal cell?

YES>>

GO TO 2.

NO>>

DIAGNOSIS END

CHECK PATTERN OF ABNORMAL CELL

With CONSULT

Check with CONSULT, if the voltage fluctuation pattern of abnormal cells applies to any one of the following conditions.

NOTE:

For the comparison of ASIC, cell voltage, and module stack, Refer to Component Description.

  • In comparison with the cell controller (ASIC), the voltage of consecutive 12 cell or 13 cell is almost the same and drops.

  • In comparison with the module, the voltage of consecutive 9 cell or 6 cell is almost the same and drops.

  • The potential difference between two adjacent cells fluctuates unsymmetrically.

  • The potential difference between two adjacent cells fluctuates symmetrically.

Does the abnormal cell voltage fluctuation pattern apply to any one of the above conditions?

YES-1>>

  • In comparison with the cell controller (ASIC), the voltage of consecutive 12 cell or 13 cell is almost the same and drops.

Possible malfunction parts: Cell controller internal malfunction (ASIC circuit). Replace cell controller. Refer to Removal & Installation.

YES-2>>

  • In comparison with the module, the voltage of consecutive 9 cell or 6 cell is almost the same and drops.

Possible malfunction parts: Module or cell voltage circuit (Harness connector).GO TO 3.

YES-3>>

  • The potential difference between two adjacent cells fluctuates unsymmetrically.

  • The potential difference between two adjacent cells fluctuates symmetrically.

Possible malfunction parts: Cell voltage circuit (Harness connector) or cell controller. GO TO 4.

NO>>

  • Does not apply to any one of them.

Possible malfunction parts: Cell, module, cell voltage circuit (Harness connector) or cell controller. GO TO 5.

CHECK CELL VOLTAGE CIRCUIT-1

Check cell voltage circuit (Harness connector) connected to abnormal cells. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Replace corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

NO>>

Repair or replace malfunctioning parts.

CHECK CELL VOLTAGE CIRCUIT-2

Check cell voltage circuit (Harness connector) connected to abnormal cells. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Replace corresponding cell controller. Refer to Removal & Installation.

NO>>

Repair or replace malfunctioning parts.

CHECK CELL VOLTAGE CIRCUIT-3

Check cell voltage circuit (Harness connector) connected to abnormal cells. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace malfunctioning parts.

CHECK MODULE VOLTAGE

Check voltage of module corresponding to abnormal cell number. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace corresponding cell controller. Refer to Removal & Installation.

NO>>

GO TO 7.

MODULE REPLACED HISTORY CONFIRMATION

Confirm the latest replacing history of an abnormal module.

Was the module changed?

YES>>

Replace corresponding module and cell controller.

  • Module:

    • Refer to Disassembly & Assembly.

    • Refer to Disassembly & Assembly.

  • Cell controller: Refer to Removal & Installation.

NO>>

Replace corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

Cell Voltage Circuit Nissan Ariya 2023

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection of LBC harness connectors and each module stack harness connector.

NOTE:

Pull the connector first then push the connector to confirm a connection. Since id connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness connector connection.

CHECK TOTAL CELL VOLTAGE DETECTION HARNESS CONTINUITY

  1. Disconnect all harness connectors of LBC, each cell controller, and each module stack.

  2. Check resistance value between LBC harness connector, module No.1 (MD1) harness connector and cell controller harness connector.

    LBC Cell controller 1 Resistance
    Connector Terminal Connector Terminal
    Z469 40 Z465 19 Less than 700 mΩ
    Z466 15
    41 Z465 19
    Z466 15

    LBC MD1 Resistance
    Connector Terminal Connector Terminal
    Z469 40 Z414  6 Less than 700 mΩ
    41

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair harness connector connection.

CHECK CELL VOLTAGE DETECTION HARNESS CONTINUITY

  1. Check resistance value between each cell controller harness connector and each module stack harness connector.

    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD1 CELL01- Z414 6 Cell controller No.1 Z466 15 Less than 700 mΩ
    CELL02- 1 14
    CELL03- 5 4
    CELL04- 3 13
    CELL05- 12 12
    CELL06- 10 11
    CELL07- 11 10
    CELL08- 9 9
    CELL09- 16 3
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD2 CELL10- Z421 6 Cell controller No.1 Z466 8 Less than 700 mΩ
    CELL11- 1 2
    CELL12- 5 7
    CELL13- 3 1
    Cell controller No.2 Z463 15
    CELL14- 12 14
    CELL15- 10 4
    CELL16- 11 13
    CELL17- 9 12
    CELL18- 16 11
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD3 CELL19- Z420 6 Cell controller No.2 Z463 10 Less than 700 mΩ
    CELL20- 1 9
    CELL21- 5 3
    CELL22- 3 8
    CELL23- 12 2
    CELL24- 10 7
    CELL25- 11 1
    Cell controller No.3 Z462 15
    CELL26- 9 14
    CELL27- 16 4
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD4 CELL28- Z419 6 Cell controller No.3 Z462 13 Less than 700 mΩ
    CELL29- 1 12
    CELL30- 5 11
    CELL31- 3 10
    CELL32- 12 9
    CELL33- 10 3
    CELL34- 11 8
    CELL35- 9 2
    CELL36- 16 7
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD5 CELL37- Z425 6 Cell controller No.3 Z462 1 Less than 700 mΩ
    Cell controller No.4 Z459 15
    CELL38- 1 14
    CELL39- 16 4
    CELL40- 4 13
    CELL41- 13 12
    CELL42- 14 11
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD6 CELL43- Z424 6 Cell controller No.4 Z459 10 Less than 700 mΩ
    CELL44- 1 9
    CELL45- 16 3
    CELL46- 4 8
    CELL47- 13 2
    CELL48- 14 7
    CELL48+ 8 1
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD7 CELL49- Z423 6 Cell controller No.5 Z477 15 Less than 700 mΩ
    CELL50- 1 14
    CELL51- 16 4
    CELL52- 4 13
    CELL53- 13 12
    CELL54- 14 11
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD8 CELL55- Z422 6 Cell controller No.5 Z477 10 Less than 700 mΩ
    CELL56- 1 9
    CELL57- 16 3
    CELL58- 4 8
    CELL59- 13 2
    CELL60- 14 7
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD9 CELL61- Z418 6 Cell controller No.5 Z477 1 Less than 700 mΩ
    Cell controller No.6 Z475 15
    CELL62- 1 14
    CELL63- 5 4
    CELL64- 3 13
    CELL65- 12 12
    CELL66- 10 11
    CELL67- 11 10
    CELL68- 9 9
    CELL69- 16 3
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD10 CELL70- Z417 6 Cell controller No.6 Z475 8 Less than 700 mΩ
    CELL71- 1 2
    CELL72- 5 7
    CELL73- 3 1
    Cell controller No.7 Z473 15
    CELL74- 12 14
    CELL75- 10 4
    CELL76- 11 13
    CELL77- 9 12
    CELL78- 16 11
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD11 CELL79- Z416 6 Cell controller No.7 Z473 10 Less than 700 mΩ
    CELL80- 1 9
    CELL81- 5 3
    CELL82- 3 8
    CELL83- 12 2
    CELL84- 10 7
    CELL85- 11 1
    Cell controller No.8 Z471 15
    CELL86- 9 14
    CELL87- 16 4
    Module No. Cell No. Connector Terminal Cell controller No. Connector Terminal Resistance
    MD12 CELL88- Z415 6 Cell controller No.8 Z471 13 Less than 700 mΩ
    CELL89- 1 12
    CELL90- 5 11
    CELL91- 3 10
    CELL92- 12 9
    CELL93- 10 3
    CELL94- 11 8
    CELL95- 9 2
    CELL96- 16 7
    CELL96+ 8 1

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair harness connector connection.

Module Temperature Sensor Nissan Ariya

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection of each cell controller harness connectors and each module stack harness connector.

NOTE:

Pull the connector first then push the connector to confirm a connection. Since id connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness connector connection.

CHECK MODULE TEMPERATURE SENSOR

  1. Disconnect each cell controller harness connector.

  2. Check module temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Replace malfunction module.

CHECK CONTINUITY BETWEEN MODULE TEMPERATURE SENSOR AND LBC

  1. Disconnect connector of corresponding module.

  2. Check continuity between module harness connector and cell controller harness connector.

    MD1 Cell controller No.2 Resistance
    Connector Terminal Connector Terminal
    Z414 4 Z463 16 0 Ω approx.
    14 6

    MD2 Cell controller No.2 Resistance
    Connector Terminal Connector Terminal
    Z421 4 Z463 16 0 Ω approx.
    14 6

    MD3 Cell controller No.3 Resistance
    Connector Terminal Connector Terminal
    Z420 4 Z462 16 0 Ω approx.
    14 6

    MD4 Cell controller No.3 Resistance
    Connector Terminal Connector Terminal
    Z419 4 Z462 16 0 Ω approx.
    14 6

    MD5 Cell controller No.4 Resistance
    Connector Terminal Connector Terminal
    Z425  11 Z459 16 0 Ω approx.
    10 5

    MD6 Cell controller No.4 Resistance
    Connector Terminal Connector Terminal
    Z424 11 Z459 16 0 Ω approx.
    10 6

    MD7 Cell controller No.6 Resistance
    Connector Terminal Connector Terminal
    Z423 11 Z475 16 0 Ω approx.
    10 5

    MD8 Cell controller No.6 Resistance
    Connector Terminal Connector Terminal
    Z422 11 Z475 16 0 Ω approx.
    10 6

    MD9 Cell controller No.7 Resistance
    Connector Terminal Connector Terminal
    Z418 4 Z473 16 0 Ω approx.
    14 5

    MD10 Cell controller No.7 Resistance
    Connector Terminal Connector Terminal
    Z417 4 Z473 16 0 Ω approx.
    14 6

    MD11 Cell controller No.8 Resistance
    Connector Terminal Connector Terminal
    Z416 4 Z471 16 0 Ω approx.
    14 5

    MD12 Cell controller No.8 Resistance
    Connector Terminal Connector Terminal
    Z415 4 Z471 16 0 Ω approx.
    14 6

  3. Check harnesses for short to ground and short to lines.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace or repair Li-ion batter Nissan Ariya vehicle communication harness.

Component Inspection

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK MODULE TEMPERATURE SENSOR

  1. Disconnect each cell controller harness connector.

  2. Check resistance of module temperature sensor.

    WARNING:

    Never measure the cell voltage terminal by mistake.

    2P9S
    Module Measurement Condition Resistance
    Terminal
    4 14 40 °C 18 kΩ approx.
    25 °C 10 kΩ approx.
    40 °C 5.8 kΩ approx.

    2P6S
    Module Measurement Condition Resistance
    Terminal
    11 10 10 °C 18 kΩ approx.
    25 °C 10 kΩ approx.
    40 °C 5.8 kΩ approx.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace module.

Module Nissan Ariya SUV

Component Inspection

CHECK MODULE VOLTAGE

Check voltage of module.

  • 2P9S (23 Parallel 9 Series)

    Terminal Voltage
    + −
    Module
    Positive terminal Negative terminal 25.2 - 37.656 V

  • 2P6S (2 Parallel 6 Series)

    Terminal Voltage
    + −
    Module
    Positive terminal Negative terminal 16.8 - 25.104 V

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace module.

Interlock Detection Switch (service Plug) Nissan Ariya first Gen

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

CHECK INSTALLATION CONDITION OF SERVICE PLUG

Check service plug installation condition. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Install service plug properly.

CHECK INTERLOCK DETECTING SWITCH (SERVICE PLUG)

Check interlock detecting switch (Service plug). Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace service plug.

CHECK INSTALLATION CONDITION OF HIGH-VOLTAGE HARNESS CONNECTOR

WARNING:

Be sure to disconnect the high voltage. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

Check the connection status of high-voltage harness connector (Front) for locking and interlocking.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Connect high-voltage harness connector (front) harness connector properly.

CHECK INTERLOCK DETECTING SWITCH [HIGH VOLTAGE HARNESS CONNECTOR (FRONT)]

Check interlock detecting switch [(High-voltage harness connector(Front)]. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace Li-ion battery high-voltage harness.

REMOVE LI-ION BATTERY

  1. Remove Li-ion battery. Refer to Removal & Installation.

  2. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 6.

CHECK CONNECTOR CONNECTION CONDITION

Check connection status of LBC harness connector, interlock detecting switch (Service plug) harness connector and interlock detecting switch [High voltage harness connector (Front)] harness connector.

NOTE:

Pull the connector first then push the connector to confirm a connection. Since id connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair harness connector connection.

CHECK INTERLOCK DETECTING CIRCUIT CONTINUITY

  1. Remove LBC harness connector, interlock detecting switch (Service plug) harness connector and interlock detecting switch [High voltage harness connector (Front)] harness connector.

  2. Check continuity between LBC harness connector and interlock detecting switch (Service plug) harness connector.

    LBC

    Interlock detecting switch

    (Service plug)     		Continuity
    Connector Terminal Connector Terminal
    Z468 21 Z404 3 Exist

  3. Check harness for short to ground and short to lines.

  4. Check continuity between interlock detecting switch (Service plug) harness connector and interlock detecting switch [high voltage harness connector (front)] harness connector.

    Interlock detecting switch

    (Service plug)

    Interlock detecting switch

    [High voltage harness connector (Front)]     		Continuity
    Connector Terminal Connector Terminal
    Z404 4 Z407 1 Exist

  5. Check harness for short to ground and short to lines.

  6. Check continuity between interlock detecting switch [High voltage harness connector (Front)] and LBC harness connector.

    Interlock detecting switch

    [High voltage harness connector (Front)]     		LBC Continuity
    Connector Terminal Connector Terminal
    Z407 2 Z468 31 Exist

  7. Check harness for short to ground and short to lines.

YES>>

GO TO 8.

NO>>

Repair or replace Li-ion battery Nissan Ariya vehicle communication harness.

CHECK HIGH VOLTAGE HARNESS CONNECTOR (FRONT)

  1. Check continuity between high voltage harness connector and interlock detecting switch (High voltage harness) harness connector.

    High voltage harness connector (Front)

    Interlock detecting switch

    [High voltage harness connector (Front)]     		Continuity
    Connector Terminal Connector Terminal
    Z445 2 Z407 2 Exist
    1 1

  2. Check harness for short to ground and short to lines.

YES>>

INSPECTION END

NO>>

Replace high voltage harness connector. Refer to Disassembly & Assembly.

Component Inspection

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

SERVICE PLUG REMOVING

  1. Remove the service plug. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

>>

GO TO 2.

CHECK INTERLOCK DETECTING SWITCH (SERVICE PLUG)

  1. Check visually that the terminals are not a corrosion, a bend, a break or a damage.

  2. Check the continuity between terminals.

Value: 0 Ω approx.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace service plug.

Battery Current Sensor Circuit Nissan Ariya 1st generation

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection status of the LBC harness connector and junction box harness connectors.

NOTE:

Pull the connector first then push the connector to confirm a connection. Since if connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness connector connection.

CHECK CONTINUITY BETWEEN BATTERY CURRENT SENSOR (BATTERY JUNCTION BOX) AND LBC HARNESS CONNECTOR

  1. Remove LBC harness connector and battery junction box harness connector.

  2. Check continuity LBC harness connector and battery junction box harness connector.

    Battery junction box LBC Continuity
    Connector Terminal Connector Terminal
    Z413 11 Z468 17 Exist
    12 18
    13 Z467 9
    14 3

  3. Check harness for short to ground and short to lines.

Is inspection result normal?

YES>>

Replace battery junction box. Refer to Disassembly & Assembly.

NO>>

Repair or replace Li-ion battery Nissan Ariya vehicle communication harness.

Battery Pack Water Temperature Sensor Circuit Nissan Ariya SUV

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK CONNECTOR CONNECTION CONDITION

Check the connection status of the LBC harness connector and battery pack water temperature sensor harness connector.

NOTE:

Pull the connector first then push the connector to confirm a connection. Since if connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness connector connection.

CHECK BATTERY PACK WATER TEMPERATURE SENSOR

  1. Disconnect battery pack water temperature sensor harness connector.

  2. Check battery pack water temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Replace battery pack water temperature sensor.

CHECK CONTINUITY BETWEEN BATTERY PACK WATER TEMPERATURE SENSOR AND LBC

  1. Remove LBC connector.

  2. Check continuity between battery pack water temperature sensor harness connector and LBC harness connector.

    Battery pack water temperature sensor LBC Continuity
    Connector Terminal Connector Terminal
    Z411 1 Z468 23 Exist
    2 24

  3. Check harness for short to ground and short to lines.

Is inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace Li-ion battery Nissan Ariya vehicle communication harness.

Component Inspection

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 2.

CHECK BATTERY PACK WATER TEMPERATURE SENSOR

  1. Disconnect battery pack water temperature sensor harness connector.

  2. Check resistance of battery pack water temperature sensor.

    Battery pack water temperature sensor Condition Resistance
    Terminal
    1 2 25 °C 3960 Ω - 4040 Ω

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace battery pack water temperature sensor.

Battery Coolant Heater (ptc) Nissan Ariya SUV

Diagnosis Procedure

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

PRECONDITIONING-1

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

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

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

>>

GO TO 2.

CHECK CONTINUITY BATTERY PTC Nissan Ariya Vehicle COMMUNICATION CIRCUIT

  1. Remove vehicle communication harness connector and vehicle communication harness connector (Battery PTC) connector.

  2. Check continuity between Nissan Ariya vehicle communication harness connector and vehicle communication harness connector (Battery PTC) and vehicle communication harness connector (Battery PTC).

    Nissan Ariya Vehicle communication harness connector

    Vehicle communication harness connector

    (Battery PTC)     		Continuity
    Connector Terminal Connector Terminal
    Z405 17 Z401 15 Exist
    27 17
    30 23

  3. Check harness for short to ground and short to lines.

Is inspection result normal?

YES>>

  • When checking only battery PTC Nissan Ariya vehicle communication: INSPECTION END

  • When also checking battery high voltage circuit: GO TO 5.

NO>>

GO TO 3.

PRECONDITIONING-2

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

  1. Remove Li-ion battery from Nissan Ariya vehicle. Refer to Removal & Installation.

  2. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 4.

CHECK CONNECTOR CONNECTING CONDITION

Check connection status of intermediate connector (Z402).

NOTE:

Pull connector first then push connector to check connection. Since if connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

Repair replace Li-ion battery Nissan Ariya vehicle communication harness.

NO>>

Repair harness connector connection.

PRECONDITIONING-3

WARNING:

Be sure to disconnect the high voltage and check residual voltage before work starts.

  1. Remove Li-ion battery from Nissan Ariya vehicle. Refer to Removal & Installation.

  2. Remove battery pack upper case. Refer to Removal & Installation.

>>

GO TO 6.

CHECK CONNECTOR CONNECTING CONDITION

Check connection status of the junction box connector (Z409 and Z408), and intermediate connector (Z478 and Z429).

NOTE:

Pull connector first then push connector to check connection. Since if connector is pressed first, connector may be locked, malfunction cannot be found.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair harness connector connection.

CHECK BATTERY PTC FUSE

Check battery PTC fuse. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Replace junction box.

CHECK CONTINUITY BETWEEN HARNESS CONNECTORS OF JUNCTION BOX AND BATTERY PTC.

  1. Remove harness connectors of junction box and battery PTC.

  2. Check continuity between harness connectors of junction box and battery PTC.

    Junction box Battery PTC Continuity
    Connector Terminal Connector Terminal
    Z409 P12 Z448 N 0Ω approx.
    Z408 P11 P

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace high voltage harness battery PTC.

High Voltage Fuse Nissan Ariya 1st generation

Component Inspection

WARNING:

Since hybrid vehicles and electric Nissan Ariya vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

REMOVE BATTERY PACK

WARNING:

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

  1. Remove Li-ion battery from Nissan Ariya vehicle. Refer to Removal & Installation.

  2. Remove battery pack upper case. Refer to Removal & Installation.

  3. Remove junction box cover.

>>

GO TO 2.

CHECK HIGH VOLTAGE FUSE (MAIN)

  1. Check continuity of high voltage fuse (Main).

    • High voltage fuse (Main)

      Value: 0 Ω approx.

    • High voltage fuse (Quick charge)

      Value: 0 Ω approx.

    • PTC fuse

      Value: 0 Ω approx.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace junction box.

Li-Ion Battery Insulation Resistance Loss Inspection. 2wd Nissan Ariya 2023

Diagnosis Procedure

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

NOTE:

To check a stable value, have time enough after putting a probe.

CAUTION:

  • The following diagnosis procedure must be performed when “P1BA2-49” are detected and Li-ion battery is judged that its insulation resistance is dropping.

  • Be sure to perform procedure till the last. And write down a memo about the malfunctioning parts. Insulation resistance may be lost in some parts.

CHECK MAXIMUM CELL VOLTAGE

With CONSULT

  1. Power switch ON.

  2. Select “Data Monitor” of “HIGH VOLTAGE BATTERY”.

  3. Record “Maximum cell voltage”.

    NOTE:

    When procedure for replacing malfunction module is required, “MAXIMUM CELL VOLTAGE” is used.

>>

GO TO 2.

PRECONDITIONING

WARNING:

Be sure to perform the high voltage disconnection and voltage check in high voltage circuit before inspection.

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

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

  3. Remove Li-ion battery. Refer to Removal & Installation.

  4. Remove battery pack upper case. Refer to Removal & Installation.

  5. Remove LBC. Refer to Removal & Installation.

>>

GO TO 3.

CHECK INSULATION RESISTANCE OF HIGH-VOLTAGE CONNECTOR (FRONT) AND HIGH-VOLTAGE CONNECTOR (QUICK CHARGE)

Using insulation resistance tester, measure insulation resistance between terminals of high-voltage connector (front) and high voltage connector (quick charge).

Probe Resistance
+ −
High-voltage connector (Front) terminal Battery pack lower case 1000 MΩ or more
High-voltage connector (Front) terminal
High-voltage connector (Quick charge) terminal
High-voltage connector (Quick charge) terminal

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring.

If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

CAUTION:

  • Be sure to set the insulation resistance tester to 500 V when performing this test.

  • Using a setting higher than 500 V can result in damage to the component being inspected.

  • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 4.

CHECK BUS BAR BETWEEN HIGH VOLTAGE CONNECTOR AND JUNCTION BOX.

  1. Remove high voltage connector (front) and high voltage connector (quick charge).

  2. Remove each connector of junction box.

  3. Remove the following bus bar.

    • Bus bar (Bus bar 1) between high voltage connector (Front) and junction box.

    • Bus bar (Bus bar 20) between high voltage connector (Quick charge) and junction box.

  4. Check that each bus bar shield have no scratches and cracks.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Take note about replaced malfunction parts. Then GO TO 5.

BATTERY JUNCTION BOX INSULATION RESISTANCE-1

  1. Remove high voltage connector (Front) and high voltage connector (Quick charge).

  2. Remove each connector of junction box.

  3. Using insulation resistance tester, measure insulation resistance between battery junction box terminals and battery pack ground.

    Probe Resistance
    + −
    Battery junction box terminals (P1) Battery pack lower case 1000 MΩ or more
    Battery junction box terminals (P3)
    Battery junction box terminals (P5)
    Battery junction box terminals (P6)

    WARNING:

    Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

    CAUTION:

    • Be sure to set the insulation resistance tester to 500 V when performing this test.

    • Using a setting higher than 500 V can result in damage to the component being inspected.

    • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

Is the inspection result normal?

YES>>

Take note about replacement of high voltage connector (Front) and high voltage connector (Quick charge) Then GO TO 6.

NO>>

Take note about malfunction parts. Then GO TO 6.

CHECK INSULATION RESISTANCE OF HIGH VOLTAGE CONNECTOR (BATTERY PTC CONNECTOR)

Using insulation resistance tester, measure insulation resistance between high-voltage connector (Battery PTC) terminals and battery pack ground (battery pack lower case).

Probe Resistance
+ −
High-voltage connector (Battery PTC) terminal Battery pack lower case 1000 MΩ or more
High-voltage connector (Battery PTC) terminal

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

CAUTION:

  • Be sure to set the insulation resistance tester to 500 V when performing this test.

  • Using a setting higher than 500 V can result in damage to the component being inspected.

  • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

GO TO 7.

CHECK INSULATION RESISTANCE BETWEEN HARNESSES OF BATTERY PTC AND JUNCTION BOX

  1. Remove battery PTC connector of junction box.

  2. Using insulation resistance tester, measure insulation resistance between battery PTC harness and battery pack lower case.

    Probe Resistance
    + −
    High-voltage connector (Battery PTC) terminal Battery pack lower case 1000 MΩ or more
    High-voltage connector (Battery PTC) terminal

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

CAUTION:

  • Be sure to set the insulation resistance tester to 500 V when performing this test.

  • Using a setting higher than 500 V can result in damage to the component being inspected.

  • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

Is the inspection result normal?

YES>>

Record replacement of high voltage connector (Battery PTC) Then GO TO 8.

NO>>

Record replacement of harnesses between battery PTC and junction box. Then GO TO 8.

CHECK BUS BAR BETWEEN JUNCTION BOX AND MODULE

  1. Remove the following parts.

    • Bus bar (bas bar2) between junction box and module No.1.

    • Bus bar (bas bar19) between junction box and module No.12.

  2. Check that each bus bar shield have no scratches and cracks.

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

Record replacement of malfunction parts. Then GO TO 9.

CHECK INSULATION RESISTANCE OF BATTERY JUNCTION BOX

Using insulation resistance tester, measure insulation resistance between battery junction box and battery pack lower case.

Probe Resistance
+ −
Battery junction box terminals (P2) Battery pack lower case 1000 MΩ or more
Battery junction box terminals (P4)

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

CAUTION:

  • Be sure to set the insulation resistance tester to 500 V when performing this test.

  • Using a setting higher than 500 V can result in damage to the component being inspected.

  • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Record replacement of junction box. Then GO TO 10.

CHECK BUS BAR BETWEEN SERVICE PLUG SWITCH AND MODULE

  1. Remove the following parts.

    • Bus bar (Bas bar8) between service plug and module No.6

    • Bus bar (Bas bar13) between service plug and module No.13.

  2. Check that each bus bar shield have no scratches and cracks.

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

Record replacement of malfunction parts. Then GO TO 11.

CHECK INSULATION RESISTANCE OF SERVICE PLUG SWITCH

  1. Remove service plug switch bracket together with bus bar.

  2. Remove bus bar from service plug.

  3. Check that each bus bar shield have no scratches and cracks.

  4. Using insulation resistance tester, measure insulation resistance between service plug switch terminal and service plug switch bracket.

    WARNING:

    Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

    CAUTION:

    • Be sure to set the insulation resistance tester to 500 V when performing this test.

    • Using a setting higher than 500 V can result in damage to the component being inspected.

    • When probe is pot on the battery lower case, put it on the part that is not corroded or soiled.

    NOTE:

    Check service plug switch and service plug switch bracket as an assembly.

    + − Resistance
    Service plug switch terminals Service plug switch bracket. 1000 MΩ or more

Is the inspection result normal?

YES>>

GO TO 12.

NO>>

Record replacement of malfunction parts. Then GO TO 12.

CHECK EACH BUS BAR

  1. Remove the following bus bars.

    • Bus bar (Bus bar 3) between module No.1 and module No.2

    • Bus bar (Bus bar 4) between module No.2 and module No.3

    • Bus bar (Bus bar 5) between module No.3 and module No.4

    • Bus bar (Bus bar 6) between module No.4 and module No.5

    • Bus bar (Bus bar 7) between module No.5 and module No.6

    • Bus bar (Bus bar 14) between module No.7 and module No.7

    • Bus bar (Bus bar 15) between module No.8 and module No.8

    • Bus bar (Bus bar 16) between module No.9 and module No.9

    • Bus bar (Bus bar 17) between module No.10 and module No.10

    • Bus bar (Bus bar 18) between module No.11 and module No.12

  2. Check that each bus bar shield have no scratches and cracks.

Is the inspection result normal?

YES>>

GO TO 13.

NO>>

Record replacement of malfunction parts. Then GO TO 13.

CHECK INSULATION VOLTAGE OF MODULE

  1. Disconnect cell voltage detecting connector of each module.

  2. Measure voltage between positive and negative terminal of each module and battery lower case ground.

    NOTE:

    The figure shows module No. 1 as an example. Measure voltage of each module in the same procedure.

    Probe Resistance
    + −
    Module positive terminal Battery pack lower case 0 V approx.
    Module negative terminal

Is the inspection result normal?

YES>>

GO TO 14.

NO>>

GO TO 15.

CHECK RESULT CONFIRMATION

Confirm malfunction parts written or record by check.

Is there malfunction parts?

YES>>

Replace all parts written down or recorded.

NO>>

Replace LBC.

MODULE APPEARANCE CHECK

  1. Remove the module that has malfunction at voltage leak check from battery pack lower case.

  2. Check the module for any of the following abnormalities by comparing its appearance with other normal modules.

    • There are dents or deformation on the module surface.

    • Liquid adheres to the module surface.

    • Module emits a strong organic solvent-like odor and continues.

>>

Record replacement of malfunction module and GO TO 14.

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

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