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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator (Diagnostics) >> Component/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 continuity between combination meter harness connector and spiral cable harness connector.
      Without paddle shifter

      Combination meter

      Spiral cable

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M57

      22

      M87

      24

      Existed

      With paddle shifter

      Combination meter

      Spiral cable

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M57

      22

      M190

      34

      Existed

    4. Check 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 2.

    NO

    Repair harness or connector.

  2. CHECK STEERING SWITCH GROUND CIRCUIT 
    1. Disconnect combination meter harness connector and spiral cable harness connector.
    2. Check continuity between combination meter harness connector and spiral cable harness connector.
      Without paddle shifter

      Combination meter

      Spiral cable

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M57

      21

      M87

      33

      Existed

      With paddle shifter

      Combination meter

      Spiral cable

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M57

      21

      M190

      32

      Existed

    3. Check 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 3.

    NO

    Repair harness or connector.

  3. CHECK SPIRAL CABLE 
    1. Disconnect steering switch connector.
    2. Check continuity between spiral cable harness connectors.
      Without paddle shifter

      Spiral cable

      Continuity

      Terminal

      24

      14

      Existed

      33

      17

      With paddle shifter

      Spiral cable

      Continuity

      Terminal

      34

      13

      Existed

      32

      15

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Replace spiral cable. Refer to SPIRAL CABLE : Removal & Installation .

  4. CHECK STEERING SWITCH 

    Check steering switch. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace steering switch. Refer to STEERING SWITCH : Removal & Installation .