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All Step Lamps Do Not Operate

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EACH DOOR SWITCH 

    Select "BCM" on CONSULT-II. With "INT LAMP" data monitor to make sure switches listed below turn ON-OFF linked with switch operation.

    DIAGNOSIS PROCEDURE

    Switch name CONSULT screen
    Driver side door switch DOOR SW -DR
    Passenger side door switch DOOR SW -AS
    Rear RH side door switch DOOR SW -RR
    Rear LH side door switch DOOR SW -RL
    Fig 1: CONSULT-II Diagnosis Function Display
    G02359382Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Inspect malfunctioning switch system.
  2. CHECK STEP LAMP INPUT 
    1. Turn ignition switch OFF.
    2. Check voltage between front door driver side step lamp harness connector D9 terminal 1 (R) and ground.
      1. 1 (R) - Ground: Battery voltage. 

    OK or NG 

    1. OK: GO TO 3.
    2. NG: GO TO  4.
    Fig 2: Checking Voltage Between Terminal 1 And Ground
    G02359383Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK STEP LAMP CIRCUIT 
    1. Disconnect BCM connector and front door driver side step lamp connector.
    2. Check continuity between BCM harness connector M4 terminal 47 (Y/R) and front door driver side step lamp harness connector D9 terminal 2 (SB).
      1. 47 (Y/R) - 2 (SB): Continuity should exist. 

    OK or NG 

    1. OK: Replace BCM if step lamp does not work after setting the connector again. Refer to "REMOVAL AND INSTALLATION OF BCM ".
    2. NG: Repair harness or connector.
    Fig 3: Checking Continuity Between Terminal 47 And Terminal 2
    G02359384Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK STEP LAMP CIRCUIT 
    1. Disconnect BCM connector and front door driver side step lamp connector.
    2. Check continuity between BCM harness connector M4 terminal 41 (R/B) and front door driver side step lamp harness connector D9 terminal 1 (R).
      1. 41 (R/B) - 1 (R): Continuity should exist. 

    OK or NG 

    1. OK: Replace BCM if step lamp does not work after setting the connector again. Refer to "REMOVAL AND INSTALLATION OF BCM ".
    2. NG: Repair harness or connector.
    Fig 4: Checking Continuity Between Terminal 41 And Terminal 1
    G02359385Courtesy of NISSAN MOTOR CO., U.S.A.
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