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Nissan Ariya: Component Parts /circuit Diagnosis

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Steering / Steering Control System / Component Parts /circuit Diagnosis

Power Supply and Ground Circuit (power Steering Control Module)

Diagnosis Procedure

CHECK ACC POWER SUPPLY FOR POWER STEERING CONTROL MODULE

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Disconnect power steering control module harness connector.

  6. Check voltage between power steering control module harness connector terminals and ground.

    WITHOUT PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F20 4 Ground Approx. 0 V
    WITH PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F25 8 Ground Approx. 0 V

  7. Power switch ON.

    CAUTION:

    Never set the Nissan Ariya vehicle to READY.

  8. Check voltage between power steering control module harness connector and ground.

    WITHOUT PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F20 4 Ground 10.5 – 16 V
    WITH PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F25 8 Ground 10.5 – 16 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK ACC POWER SUPPLY CIRCUIT FOR POWER STEERING CONTROL MODULE

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Check the 5A fuse (#38).

  6. Check continuity between power steering control module harness connector and the fuse block (J/B).

    WITHOUT PROPILOT ASSIST 2.0
    Power steering control module Fuse block (J/B) Continuity
    Connector Terminal Connector Terminal
    F20 4 E57 73 Existed
    WITH PROPILOT ASSIST 2.0
    Power steering control module Fuse block (J/B) Continuity
    Connector Terminal Connector Terminal
    F25 8 E57 73 Existed

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for ACC power supply circuit.

NO>>

Repair / replace harness, connector, or fuse.

CHECK 12V BATTERY POWER SUPPLY FOR POWER STEERING CONTROL MODULE

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Check voltage between power steering control module harness connector terminals and ground.

    WITHOUT PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F5 7 Ground 10.5 – 16 V
    WITH PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F26 3 Ground 10.5 – 16 V
    F27 1

  6. Power switch ON.

    CAUTION:

    Never set the Nissan Ariya vehicle to READY.

  7. Check voltage between power steering control module harness connector terminals and ground.

    WITHOUT PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F5 7 Ground 10.5 – 16 V
    WITH PROPILOT ASSIST 2.0
    + — Voltage
    Power steering control module
    Connector Terminal
    F26 3 Ground 10.5 – 16 V
    F27 1

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

CHECK 12V BATTERY POWER SUPPLY CIRCUIT FOR POWER STEERING CONTROL MODULE

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Check the 100A fusible link (#H).

  6. Check continuity between power steering control module harness connector and the battery terminal with fusible link.

    WITHOUT PROPILOT ASSIST 2.0
    Power steering control module Battery terminal with fusible link Continuity
    Connector Terminal Connector Terminal
    F5 7 E136 6 Existed
    WITH PROPILOT ASSIST 2.0
    Power steering control module Battery terminal with fusible link Continuity
    Connector Terminal Connector Terminal
    F26 3 E136 6 Existed
    F27 1 B21 1 Existed

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair / replace harness, connector, or fusible link.

CHECK POWER STEERING CONTROL MODULE GROUND CIRCUIT

Check continuity between power steering control module harness connector and ground.

WITHOUT PROPILOT ASSIST 2.0
Power steering control module — Continuity
Connector Terminal
F5 8 Ground Existed
WITH PROPILOT ASSIST 2.0
Power steering control module — Continuity
Connector Terminal
F26 4 Ground Existed
F27 2

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair / replace harness or connector.

CHECK TERMINAL

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Check power steering control module terminals for damage or loose connection with harness connector.

  6. Check fuse block (J/B) terminals for damage or loose connection with harness connector.

  7. Check battery terminal with fusible link terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair / replace harness, connector, or terminal.

Power Steering Warning Lamp

Component Function Check

CHECK THE ILLUMINATION OF THE ELECTRIC POWER STEERING WARNING LAMP

Check that the electric power steering warning lamp turns ON when power switch ON. Then, electric power steering warning lamp turns OFF after set the Nissan Ariya vehicle to READY.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Perform trouble diagnosis. Diagnosis Procedure.

Diagnosis Procedure

PERFORM SELF-DIAGNOSIS

With CONSULT

  1. Pull the parking brake switch.

    NOTE:

    Check to make sure that the parking brake switch indicator is turned ON.

  2. Power switch OFF.

  3. Get out of the Nissan Ariya vehicle and close all doors.

  4. Wait 65 seconds or more.

    NOTE:

    • Check to make sure that the parking brake switch indicator is turned OFF.

    • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator on the switch turns OFF. Once indicator on the switch turns OFF, move to next step.

  5. Power switch ON.

  6. Perform self-diagnosis for “EPS/DIRECT ADAPTIVE STEERING 3”.

Is any DTC detected?

YES>>

Check the DTC. DTC Index .

NO>>

GO TO 2.

CHECK TERMINALS AND HARNESS CONNECTORS

Check the power steering control module terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES>>

Replace the power steering control module. RDEU-000094778.

NO>>

Repair/replace harness, connector or terminal.

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

Component Parts /circuit Diagnosis

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