Door Lock/Unlock Switch Check

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II

Check door lock/unlock switch ("LOCK SW DR/AS"/"UNLK SW DR/AS") in "DATA MONITOR" mode with CONSULT-II.

Fig 1: Checking Door Lock/Unlock Switch Input Signal - With CONSULT-II
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between smart entrance control unit harness connector M122 terminal 33 (BR) and ground with oscilloscope when door lock/unlock switch is turned "LOCK" or "UNLOCK".
3. Make sure signals which are shown in the figure below can be detected during 10 sec. just after door lock/unlock switch is turned "LOCK" or "UNLOCK".
  
  Fig 2: Checking Door Lock/Unlock Switch Input Signal - Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to wiring diagram in WIRING DIAGRAM - VEHSEC .

OK or NG
1. OK: Door lock/unlock switch is OK.
2. NG: Check the following.
  - Ground circuit for each front power window switch
  - Harness for open or short between each front power window switch and smart entrance control unit connector
    If above systems are normal, replace the front power window switch.