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Trunk Room Lamp Switch Check

  1. CHECK TRUNK ROOM LAMP SWITCH INPUT SIGNAL

    With CONSULT-III 

    Check ("TRUNK SW") in "DATA MONITOR" mode with CONSULT-III.

    CONSULT-III DESCRIPTION

    Monitor item Trunk condition
    TRUNK SW OPEN : ON
    CLOSED : OFF

    Without CONSULT-III 

    1. Turn ignition switch OFF.
    2. Check voltage between BCM harness connector M19 terminal 42 and ground.
      VOLTAGE AND CONTINUITY SPECIFICATIONS

      Connector Terminals Trunk condition Voltage (V) (Approx.)
      (+) (-)
      M19 42 Ground CLOSED Battery voltage
      OPEN 0
      Fig 1: Checking Voltage Between BCM Harness Connector M19 Terminal 42 And Ground
      G07140410Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: Trunk room lamp switch circuit is OK.

      NG: GO TO 2.

  2. CHECK TRUNK ROOM LAMP SWITCH
    1. Turn ignition switch OFF.
    2. Disconnect trunk room lamp switch connector.
    3. Check continuity between trunk room lamp switch terminals 1 and 2.
      VOLTAGE AND CONTINUITY SPECIFICATIONS

      Terminals Trunk condition Continuity
      1 2 CLOSED No
      OPEN Yes
      Fig 2: Checking Continuity Between Trunk Room Lamp Switch Terminals 1 And 2
      G07140411Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: GO TO 3.

      NG: Replace trunk room lamp switch.

  3. CHECK TRUNK ROOM LAMP SWITCH CIRCUIT
    1. Disconnect BCM connector M19.
    2. Check continuity between BCM harness connector M19 (A) terminal 42 and trunk room lamp switch harness connector B57 (B) terminal 1.

      42 - 1 : Continuity should exist. 

      Fig 3: Checking Continuity Between Connector M19 (A) Terminal 42 And Harness Connector B57 (B) Terminal 1
      G07140412Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between BCM harness connector M19 (A) terminal 42 and ground.

      42 - Ground : Continuity should not exist. 

      OK or NG 

      OK: GO TO 4.

      NG: Repair or replace harness between BCM and trunk room lamp switch.

  4. CHECK TRUNK ROOM LAMP SWITCH GROUND CIRCUIT

    Check continuity between trunk room lamp switch harness connector B57 terminal 2 and ground.

    2 - Ground : Continuity should exist. 

    Fig 4: Checking Continuity Between Trunk Room Lamp Switch Harness Connector B57 Terminal 2 And Ground
    G07140413Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Check connection of harness and connector.

    NG: Repair or replace trunk room lamp switch ground circuit.

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