Front Door Lock Assembly LH (Key Cylinder Switch) Check (With Front and Rear Power Window Anti-pinch System)

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FRONT DOOR LOCK ASSEMBLY LH (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 LOCK SYSTEM" with CONSULT-II.
  "KEY CYL LK-SW" should be "ON" when key inserted in door key cylinder is turned to lock.
  
  Fig 1: DATA MONITOR - CONSULT II Display Screen
  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.
  "KEY CYL UN-SW" should be "ON" when key inserted in door key cylinder was turned to unlock.
  
  Fig 2: DATA MONITOR - CONSULT II Display Screen
  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: 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.
  
  Fig 4: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK FRONT DOOR KEY CYLINDER SWITCH LH 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) connector.
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 D51 terminals 1, 6.
  6 (R) - 6 (R): Continuity should exist.
  
  4 (P/L) - 1 (P/L): Continuity should exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness.
  
  Fig 5: Checking Front Door Key Cylinder Switch LH Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) GROUND
Check continuity between front door lock assembly LH (key cylinder switch) connector D51 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 Front Door Lock Assembly LH (Key Cylinder Switch) Connector D51 Terminal 5 And 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) terminal 1, 6 and 5.

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

Fig 8: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) Terminal 1, 6 And 5
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).