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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2237 (Body Control System) >> DTC/Circuit Diagnosis >> Combination Switch Input Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. 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 INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
    1. Turn ignition switch OFF.
    2. Disconnect BCM and combination switch.
    3. Check continuity between BCM harness connector and combination switch harness connector.
      System BCM Combination switch Continuity
      Connector Terminal Connector Terminal
      INPUT 1 M18 (A) 36 M28 (B) 1 Yes
      INPUT 2 35 2
      INPUT 3 34 3
      INPUT 4 33 4
      INPUT 5 32 5
      Fig 1: Checking Continuity Between BCM Harness Connector And Combination Switch Harness Connector
      G08169035Courtesy of NISSAN NORTH AMERICA, INC.

      Does continuity exist? 

      YES: GO TO 2

      NO: Repair or replace harness.

  2. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT

    Check for continuity between BCM harness connector and ground.

    System BCM Ground Continuity
    Connector Terminal
    INPUT 1 M18 36 No
    INPUT 2 35
    INPUT 3 34
    INPUT 4 33
    INPUT 5 32
    Fig 2: Checking Continuity Between BCM Harness Connector And Ground
    G08169036Courtesy of NISSAN NORTH AMERICA, INC.

    Does continuity exist? 

    YES: Repair or replace harness.

    NO: GO TO 3

  3. CHECK COMBINATION SWITCH

    Check combination switch. Refer to "SYMPTOM TABLE ".

    Is the check result normal? 

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

    NO: Replace combination switch (applicable parts). Refer to "REMOVAL AND INSTALLATION ".