Check Door Lock and Unlock Switch (With Interruption Function Detection for Front Door Window)

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER WINDOW OPERATION
Does power window system operate normally?

OK or NG
1. OK : GO TO 2
2. NG : Refer to , "TROUBLE DIAGNOSES SYMPTOM CHART / WITH FRONT LEFT AND RIGHT POWER WINDOW ANTI-PINCH SYSTEM ".
CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II

Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".
- When door lock and unlock switch is turned to LOCK:
  1. LOCK SW DR/AS:ON
- When door lock and unlock switch is turned to UNLOCK:
  1. UNLK SW DR/AS:ON
    
    Fig 1: Checking Door Lock And Unlock Switch 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 BCM connector M3 terminal 74 (Y) and ground with oscilloscope when door lock and unlock switch is turned "LOCK" or "UNLOCK".
3. Make sure signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch is turned "LOCK" or "UNLOCK".
  
  Fig 2: BCM Connector M3 Terminal 74 (Y) And Ground With Oscilloscope Continuity Check Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Signal Between BCM Connector M3 Terminal 74 (Y) And Ground With Oscilloscope
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Door lock and unlock switch is OK.
2. NG : GO TO 3.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM, power window main switch and power window sub-switch connectors.
3. Check continuity between BCM connector M3 terminal 74 (Y) and power window main switch (door lock and unlock switch) connector D7 terminal 8 (Y).
  1. 74 (Y) - 8 (Y): Continuity should exist.
    
    Fig 4: Checking Continuity Between BCM Connector M3 Terminal 74 (Y) And Power Window Main Switch (Door Lock And Unlock Switch) Connector D7 Terminal 8 (Y)
    Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between BCM connector M3 terminal 74 (Y) and power window sub-switch (door lock and unlock switch) connector D36 terminal 11 (Y).
  1. 74 (Y) - 11 (Y): Continuity should exist.
    
    Fig 5: Checking Continuity Between BCM Connector M3 Terminal 74 (Y) And Power Window Sub-Switch (Door Lock And Unlock Switch) Connector D36 Terminal 11 (Y)
    Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : GO TO 4.
2. NG : Repair or replace harness.
CHECK DOOR LOCK AND UNLOCK SWITCH GROUND HARNESS
- Check continuity between power window main switch (door lock and unlock switch) connector D7 terminal 5 (B) and ground.
  1. 5 (B) - Ground: Continuity should exist.
    
    Fig 6: Checking Continuity Between Power Window Main Switch (Door Lock And Unlock Switch) Connector D7 Terminal 5 (B) And Ground
    Courtesy of NISSAN MOTOR CO., U.S.A.
- Check continuity between power window sub-switch (front passenger side) (door lock and unlock switch) connector D37 terminal 7 (B) and ground.
  1. 7 (B) - Ground: Continuity should exist.
    
    Fig 7: Checking Continuity Between Power Window Sub-Switch (Front Passenger Side) (Door Lock And Unlock Switch) Connector D37 Terminal 7 (B) And Ground
    Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Replace power window main switch or power window sub-switch.
2. NG : Repair or replace harness.