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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Warning Chime System -- M37/M56 >> DTC/Circuit Diagnosis >> Parking Brake Switch Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK COMBINATION METER INPUT SIGNAL
    1. Turn ignition switch ON.
    2. Check the voltage between combination meter harness connector and ground.
      VOLTAGE REFERENCE

      (+) (-) Condition Voltage (Approx.)
      Combination meter Ground
      Connector Terminal
      M53 26 Ignition switch ON 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.
      CONTINUITY REFERENCE

      Terminals Continuity
      Combination meter Parking brake switch
      Connector Terminal Connector Terminal
      M53 26 E107 1 Existed
    4. Check continuity between combination meter harness connector and ground.
      CONTINUITY REFERENCE

      Terminals Continuity
      Combination meter Ground
      Connector Terminal
      M53 26 Not existed

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Repair harness or connector.