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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 929 (Interior Lighting System) >> DTC/Circuit Diagnosis >> Ignition Keyhole Illumination Control Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK IGNITION KEYHOLE OUTPUT 

    WITH CONSULT

    1. Turn ignition switch ON.
    2. Select "IGN ILLUM" of BCM (INT LAMP) active test item.
    3. While operating the test item, check voltage between BCM connector M18 terminal 1 and ground.
      Connector Terminal - IGN ILLUM Voltage
      M18 1 Ground ON 0V
      OFF Battery voltage
      Fig 1: Checking Voltage Between BCM Connector M18 Terminal 1 And Ground
      G05382668Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Ignition keyhole illumination circuit is operating normally.

      Fixed ON: GO TO  3

      Fixed OFF: GO TO 2

  2. CHECK IGNITION KEYHOLE ILLUMINATION OPEN CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector M18 and ignition keyhole illumination connector.
    3. Check continuity between BCM connector M18 (A) terminal 1 and ignition keyhole illumination connector M150 (B) terminal 2.
      BCM Ignition keyhole illumination Continuity
      Connector Terminal Connector Terminal
      M18 (A) 1 M150 (B) 2 Yes
      Fig 2: Checking Continuity Between BCM Connector M18 Terminal 1 And Ignition Keyhole Illumination Connector M150 Terminal 2
      G04913896Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Check the ignition keyhole illumination for an open. If OK, replace BCM. Refer to "REMOVAL AND INSTALLATION ". If NG, replace ignition keyhole illumination.

      NO: Repair harness or connectors.

  3. CHECK IGNITION KEYHOLE ILLUMINATION SHORT CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector M18 and ignition keyhole illumination connector.
    3. Check continuity between BCM connector M18 terminal 1 and ground.
      Connector Terminal - Continuity
      M18 1 Ground No
      Fig 3: Checking Continuity Between BCM Connector M18 Terminal 1 And Ground
      G05382670Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Check the ignition keyhole illumination for a short circuit. If OK, replace BCM. Refer to "REMOVAL AND INSTALLATION ". If NG, replace ignition keyhole illumination.

      NO: Repair harness or connectors.