Door Lock/Unlock Switch Check

WARNING: This page is about a different car, the 2006 Nissan Quest. 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: Display CONSULT-II - Data Monitor Screen
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Remove key from ignition key cylinder.
Check the signal between BCM connector M18 terminal 22 and ground with oscilloscope when door lock/unlock switch is turned to LOCK or UNLOCK.

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.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal		Voltage (V) (Approx.)
Connector	( + )	( - )	Voltage (V) (Approx.)
M18	22	Ground

OK or NG

OK: Door lock and unlock switch circuit is OK.

NG: GO TO 2.

Fig 2: Identifying Signal Between BCM Connector M18 Terminal 22 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK BCM OUTPUT SIGNAL
Check ("POWER WINDOW DOWN") in ACTIVE TEST mode for "MULTI REMOTE ENT" with CONSULT-II. Refer to "ACTIVE TEST ".

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

YES or NO

YES: GO TO 3.

NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

Fig 3: CONSULT II Display - Active Test
Courtesy of NISSAN MOTOR CO., U.S.A.
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 (without automatic back door system) or D8 terminal 17 (with automatic back door system) and ground.
  15 - Ground: Continuity should exist.
  
  17 - Ground: Continuity should exist.
  
  Fig 4: Identifying Continuity Between Main Power Window And Door Lock/Unlock Switch Connector Terminals And Ground
  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 - Ground: Continuity should exist.
OK or NG

OK: GO TO 4.

NG: Repair or replace harness.

Fig 5: Identifying Continuity Between Power Window And Door Lock/Unlock Switch RH Connector D105 Terminal 11 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
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 (without automatic back door system) or terminal 14 (with automatic back door system).
  22 - 12: Continuity should exist.
  
  22 - 14: Continuity should exist.
  
  Fig 6: Identifying Continuity Between BCM Connector Terminal And Main Power Window And Door Lock/Unlock Switch Connector Terminal
  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 - 16: 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. Refer to "REMOVAL AND INSTALLATION ".
  
  NG: Repair or replace harness.
  
  Fig 7: Identifying Continuity Between BCM Connector Terminal And Power Window And Door Lock/Unlock Switch RH Connector Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.