Front Door Lock Assembly LH (Key Cylinder Switch) Check (With Rear Power Vent Windows)

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
With CONSULT-II
- Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") in "DATA MONITOR" mode for "POWER DOOR ROCK SYSTEM" with CONSULT-II. Refer to "DATA MONITOR ".
  "KEY CYL LK-SW" should be "ON" when key inserted in door key cylinder is turned to lock.
  
  Fig 1: CONSULT-II Screen Display - DATA MONITOR
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Check front door lock assembly LH (key cylinder switch) ("KEY CYL UN-SW") in "DATA MONITOR" mode for "POWER DOOR LOCK SYSTEM" with CONSULT-II. Refer to "DATA MONITOR ".
  "KEY CYL UN-SW" should be "ON" when key inserted in door key cylinder is turned to unlock.
  
  Fig 2: CONSULT-II Screen Display - DATA MONITOR
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II

Check voltage between main power window and door lock/unlock switch connector and ground.

Fig 3: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector Terminals 4, 6 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Terminals Voltage Reference Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Further inspection is necessary. Refer to SYMPTOM CHART .
- NG: GO TO 2.
CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front door lock assembly LH (key cylinder switch).
3. Check continuity between main power window and door lock/unlock switch connector D7 terminals 4, 6 and front door lock assembly LH (key cylinder switch) connector D14 terminals 1, 6.
  
  Fig 5: Checking Continuity Between Connector D7 Terminals 4, 6 And Connector D14 Terminals 1, 6
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 6(R) - 6 (R): Continuity should exist.
  - 4(L) - 1 (L): Continuity should exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) GROUND
Check continuity between front door lock assembly LH (key cylinder switch) connector D14 terminal 5 and ground.
- 5(B) - Ground: Continuity should exist.
OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.
  
  Fig 6: Checking Continuity Between Connector D14 Terminal 5 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)
Check continuity between front door lock assembly LH (key cylinder switch) connector D14 terminal 1, 6 and 5.

Fig 7: Terminals Continuity Reference Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Further inspection is necessary. Refer to SYMPTOM CHART .
- NG: Replace front door lock assembly LH (key cylinder switch). Refer to "FRONT DOOR LOCK ".
  
  Fig 8: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) Connector D14 Terminals 1, 6 And Terminal 5
  Courtesy of NISSAN MOTOR CO., U.S.A.