LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2024 >> Ariya Platinum+ >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System >> Component/Circuit Diagnosis >> Power Supply And Ground Circuit (Power Steering Control Module) >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

  1. CHECK ACC POWER SUPPLY FOR POWER STEERING CONTROL MODULE 
    1. Pull the parking brake switch.
      NOTE: SYMBOL Check to make sure that the parking brake switch indicator is turned ON.
    2. Power switch OFF.
    3. Get out of the vehicle and close all doors.
    4. Wait 65 seconds or more.
      NOTE: SYMBOL
      • 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 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.

  2. CHECK ACC POWER SUPPLY CIRCUIT FOR POWER STEERING CONTROL MODULE 
    1. Pull the parking brake switch.
      NOTE: SYMBOL Check to make sure that the parking brake switch indicator is turned ON.
    2. Power switch OFF.
    3. Get out of the vehicle and close all doors.
    4. Wait 65 seconds or more.
      NOTE: SYMBOL
      • 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 5 A fuse (No. 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.

  3. CHECK 12 V BATTERY POWER SUPPLY FOR POWER STEERING CONTROL MODULE 
    1. Pull the parking brake switch.
      NOTE: SYMBOL Check to make sure that the parking brake switch indicator is turned ON.
    2. Power switch OFF.
    3. Get out of the vehicle and close all doors.
    4. Wait 65 seconds or more.
      NOTE: SYMBOL
      • 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 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.

  4. CHECK 12 V BATTERY POWER SUPPLY CIRCUIT FOR POWER STEERING CONTROL MODULE 
    1. Pull the parking brake switch.
      NOTE: SYMBOL Check to make sure that the parking brake switch indicator is turned ON.
    2. Power switch OFF.
    3. Get out of the vehicle and close all doors.
    4. Wait 65 seconds or more.
      NOTE: SYMBOL
      • 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 100 A fusible link (No. 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.

  5. 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.

  6. CHECK TERMINAL 
    1. Pull the parking brake switch.
      NOTE: SYMBOL Check to make sure that the parking brake switch indicator is turned ON.
    2. Power switch OFF.
    3. Get out of the vehicle and close all doors.
    4. Wait 65 seconds or more.
      NOTE: SYMBOL
      • 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.

scientia non olet · About LEMON Manuals