Door Lock/Unlock Switch Check (King Cab)

WARNING: This page is about a different car, the 2005 Nissan Titan. 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 ("CDL LOCK SW", "CDL UNLOCK SW") in DATA MONITOR mode in CONSULT-II. Refer to "DATA MONITOR ".
- When door lock/unlock switch is turned to LOCK:
  CDL LOCK SW : ON
- When door lock/unlock switch is turned to UNLOCK:
  CDL UNLOCK SW : ON
  
  Fig 1: Checking Door Lock/Unlock Switch In CONSULT-II (King Cab)
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between BCM connector M18 terminal 22 and ground with oscilloscope when door lock/unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figure below can be detected during 10 seconds just after the door lock/unlock switch is turned to LOCK or UNLOCK.
  
  Fig 2: Door Lock/Unlock Voltage Reference Value Graph (King Cab)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Door Lock/Unlock Switch Input Signal (King Cab)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Door lock and unlock switch circuit is OK.
- NG : GO TO 2.
CHECK BCM OUTPUT SIGNAL
Check ("POWER WINDOW DOWN") in ACTIVE TEST mode for "REMOTE KEYLESS ENTRY SYSTEM" with CONSULT-II. Refer to "ACTIVE TEST ".

Fig 4: Checking BCM Output Signal Using CONSULT-II (King Cab)
Courtesy of NISSAN MOTOR CO., U.S.A.

When "ACTIVE TEST" is performed, are the front windows lowered?

OK or NG
- OK : GO TO 3.
- NG : Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch RH.
3. Check continuity between main power window and door lock/unlock switch connector D7 terminal 15 and ground.
  15 (B) - Ground : Continuity should exist
  
  Fig 5: Checking Door Lock/Unlock Switch Connector D7 Terminal 15 & Ground Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground.
  11 (B) - Ground : Continuity should exist
OK or NG
- OK : GO TO 4.
- NG : Repair or replace harness.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7 terminal 12.
  22 (G) - 12 (LG/W) : Continuity should exist
  
  Fig 7: Checking Continuity Between BCM Connector M18 Terminal 22 And Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 12
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105 terminal 16.
  22 (G) - 16 (LG/W) : Continuity should exist
OK or NG
- OK : Replace main power window and door lock/unlock switch or power window and door lock/unlock switch RH.
- NG : Repair or replace harness.