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Home >> Nissan-Datsun >> 2013 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 129 (Body Control System (With Intelligent Key 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 2013 Nissan Cube. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INPUT 1 - 5 CIRCUIT FOR OPEN 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and combination switch connectors.
    3. Check continuity between BCM harness connector and combination switch harness connector.
      System BCM Combination switch Continuity
      Connector Terminal Connector Terminal
      INPUT 1 M68 6 M27 12 Existed
      INPUT 2 5 14
      INPUT 3 4 5
      INPUT 4 3 2
      INPUT 5 2 8

      Does continuity exist? 

      YES: GO TO 2.

      NO: Repair harnesses or connectors.

  2. CHECK INPUT 1 - 5 CIRCUIT FOR SHORT 

    Check for continuity between BCM harness connector and ground.

    System BCM Ground Continuity
    Connector Terminal
    INPUT 1 M68 6 Not existed
    INPUT 2 5
    INPUT 3 4
    INPUT 4 3
    INPUT 5 2

    Does continuity exist? 

    YES: Repair harnesses or connectors.

    NO: GO TO 3.

  3. CHECK BCM INPUT SIGNAL 
    1. Connect BCM and combination switch connectors.
    2. Turn ON any switch in the system that is malfunction.
    3. Check voltage between BCM harness connector and ground.
      System Terminals Voltage (Approx.)
      (+) (-)
      BCM Ground
      Connector Terminal
      INPUT 1 M68 6 Refer to "REFERENCE VALUE ".
      INPUT 2 5
      INPUT 3 4
      INPUT 4 3
      INPUT 5 2

      Is the measurement value normal? 

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

      No: Replace combination switch.