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HOMESERVICE MANUALSNISSAN-DATSUN2024FRONTIER SL, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (DTC/CIRCUIT DIAGNOSIS) (5 OF 6)DTC/CIRCUIT DIAGNOSISDTC P1564: ASCD STEERING SWITCHDIAGNOSIS PROCEDURE
2024 Nissan-Datsun Frontier SL, RWD

Diagnosis Procedure

2024 Nissan-Datsun Frontier SL, RWDSECTION Diagnosis Procedure
  1. CHECK DTC PRIORITY 

    If DTC P1564 is displayed with DTC P0605, first perform the confirmation procedure (trouble diagnosis) for DTC P0605.

    Is DTC P0605 detected?

    >>

    Perform diagnosis for P0605. Refer to DTC Description .

    >>

    GO TO 2.

  2. CHECK ASCD STEERING SWITCH CIRCUIT 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. On CONSULT screen, select "ENGINE">>"Data Monitor">>"MAIN SW", "CANCEL SW", "RESUME/ACC SW" and "SET SW".
    3. Check each item indication under the following conditions.
      Monitor item Condition Indication
      MAIN SW MAIN switch Pressed ON
      Released OFF
      CANCEL SW CANCEL switch Pressed ON
      Released OFF
      RESUME/ACC SW ACCEL/RES switch Pressed ON
      Released OFF
      SET SW COAST/SET switch Pressed ON
      Released OFF

    SYMBOL Without CONSULT

    1. Turn ignition switch ON.
    2. Check the voltage between ECM harness connector terminals as per the following.
      ECM Condition Voltage (Approx.)
      Connector + -
      Terminal
      E16 186 (ASCD steering switch signal) 187 MAIN switch: Pressed 0 V
      CANCEL switch: Pressed 1 V
      COAST/SET switch: Pressed 2 V
      ACCEL/RES switch: Pressed 3 V
      All ASCD steering switches: Released 4 V

    Is the inspection result normal?

    >>

    INSPECTION END

    >>

    GO TO 3.

  3. CHECK ASCD STEERING SWITCH GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Disconnect combination switch (spiral cable) harness connector.
    4. Check the continuity between combination switch harness and ECM harness connector.
      Combination switch ECM Continuity
      Connector Terminal Connector Terminal
      M30 15 E16 187 Existed
    5. Also check harness for short to power.

    Is the inspection result normal?

    >>

    GO TO 4.

    >>

    Repair or replace error-detected parts.

  4. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT 
    1. Check the continuity between combination switch (spiral cable) harness connector and ECM harness connector.
      Combination switch ECM Continuity
      Connector Terminal Connector Terminal
      M30 14 E16 186 Existed
    2. Also check harness for short to power and short to ground.

    Is the inspection result normal?

    >>

    GO TO 5.

    >>

    Repair or replace error-detected parts.

  5. CHECK COMBINATION SWITCH 

    Check the continuity between combination switch (spiral cable) connector terminals.

    Combination switch Continuity
    Terminal
    14 35 Existed
    15 34

    Is the inspection result normal?

    >>

    GO TO 6.

    >>

    Replace spiral cable. Refer to Removal and Installation .

  6. CHECK ASCD STEERING SWITCH 

    Refer to Component Inspection .

    Is the inspection result normal?

    >>

    INSPECTION END

    >>

    Replace ASCD steering switch. Refer to Removal and Installation .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.