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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) B1F10-U1725 And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> Steering Switch Signal A Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK STEERING SWITCH SIGNAL A CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect combination meter harness connector and spiral cable harness connector.
    3. Check the continuity between combination meter harness connector and spiral cable harness connector.
      Combination meter Spiral cable Continuity
      Connector Terminal Connector Terminal
      M57 22 M87 24 Existed
    4. Check the continuity between combination meter harness connector and ground.
      Combination meter Ground Continuity
      Connector Terminal
      M57 22 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace malfunctioning parts.

  2. CHECK STEERING SWITCH GROUND CIRCUIT

    1. Disconnect combination meter harness connector and spiral cable harness connector.
    2. Check the continuity between combination meter harness connector and spiral cable harness connector.
      Combination meter Spiral cable Continuity
      Connector Terminal Connector Terminal
      M57 21 M87 33 Existed
    3. Check the continuity between combination meter harness connector and ground.
      Combination meter Ground Continuity
      Connector Terminal
      M57 21 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace malfunctioning parts.

  3. CHECK SPIRAL CABLE

    1. Disconnect steering switch connector.
    2. Check the continuity between spiral cable harness connectors.
      Spiral cable Continuity
      Connector Terminal Connector Terminal
      M87 24 M301 14 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Replace spiral cable. Refer to REMOVAL AND INSTALLATION .

  4. CHECK STEERING SWITCH

    Check steering switch. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Replace steering wheel. Refer to REMOVAL AND INSTALLATION .