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Home >> Infiniti >> 2018 >> QX80 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Power Control System) >> Power Distribution System >> DTC/Circuit Diagnosis >> Push-Button Ignition Switch Position Indicator >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan Armada and 2018 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  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

      M101

      8

      Ground

      Battery voltage

    Is the inspection normal?

    YES

    GO TO 2.

    NO

    Check 10 A fuse [No. 10, located in fuse block (J/B)].

    NO

    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

      M101

      73

      Ground

      Battery voltage

      91

      109

    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

      M71

      91

      M101

      5

      Existed

      ACC

      109

      6

      ON

      73

      7

    3. Check continuity between BCM harness connector and ground.

      Indicator

      BCM

      Ground

      Continuity

      Connector

      Terminal

      LOCK

      M71

      91

      Not existed

      ACC

      109

      ON

      73

    Is the inspection normal?

    YES

    Replace push-button ignition switch. Refer to Removal and Installation .

    NO

    Repair or replace harness.