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Home >> Infiniti >> 2013 >> EX37 Base, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Power Control System (Power Distribution System) >> DTC/Circuit Diagnosis >> Push-Button Ignition Switch Position Indicator >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect push-button ignition switch connector.
    3. Check voltage between push-button ignition switch harness connector and ground.
      (+) (-) Voltage (V) (Approx.)
      Push-button ignition switch
      Connector Terminal
      M50 8 Ground Battery voltage

      Is the inspection normal? 

      YES: GO TO 2.

      NO-1: Check 10 A fuse [No. 9, located in fuse block (J/B)].

      NO-2: Check harness for open or short between push-button ignition switch and fuse.

  2. CHECK BCM INPUT 
    1. Connect push-button ignition switch connector.
    2. Disconnect BCM connector.
    3. Check voltage between BCM connector and ground.
      (+) (-) Voltage (V) (Approx.)
      BCM
      Connector Terminal
      M119 15 Ground Battery voltage
      M122 93
      M123 134

      Is the inspection normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: GO TO 3.

  3. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 
    1. Disconnect push-button ignition switch connector.
    2. Check continuity between BCM harness connector and push-button ignition switch harness connector.
      Indicator BCM Push-button ignition switch Continuity
      Connector Terminal Connector Terminal
      LOCK M123 134 M50 5 Existed
      ACC M119 15 6
      ON M122 93 7
    3. Check continuity between BCM harness connector and ground.
      Indicator BCM Ground Continuity
      Connector Terminal
      LOCK M123 134 Not existed
      ACC M119 15
      ON M122 93

      Is the inspection normal? 

      YES: Replace push-button ignition switch. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.