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Home >> Nissan-Datsun >> 2020 >> 370Z Base, Automatic Trans >> Repair and Diagnosis >> Electrical >> Gauges >> Meter, Warning Lamp & Indicator (Diagnostics) >> Component Parts/Circuit Diagnosis >> Parking Brake Switch Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

Transmits the parking brake switch signal to the combination meter.

  1. CHECK COMBINATION METER INPUT SIGNAL 
    1. Start the engine.
    2. Check the voltage between combination meter harness connector and ground.

      Terminals

      Condition

      Voltage

      (Approx.)

      (+)

      (-)

      Combination meter

      Ground

      Connector

      Terminal

      M54

      26

      Ground

      Engine idling

      When parking brake is applied

      0 V

      When parking brake is released

      12 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    GO TO 2.

  2. CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector and parking brake switch connector.
    3. Check continuity between combination meter harness connector and parking brake switch harness connector.

      Terminals

      Continuity

      Combination meter

      Parking brake switch

      Connector

      Terminal

      Connector

      Terminal

      M54

      26

      M68

      1

      Existed

    4. Check continuity between combination meter harness connector and ground.

      Terminals

      Continuity

      Combination meter

      Ground

      Connector

      Terminal

      M54

      26

      Ground

      Not existed

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Repair harness or connector.