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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (INFINITI INTOUCH) (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Steering Switch Signal A Circuit >> Diagnosis Procedure

Diagnosis Procedure

  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 following.