Front Door Lock Assembly LH (Key Cylinder Switch) Check

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. 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. Refer to "DATA MONITOR ".
"KEY CYL LK-SW" should be "ON" when key inserted and door key cylinder is turned to lock.

Fig 1: Identifying CONSULT II Display - DATA MONITOR
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 and door key cylinder was turned to unlock.

Fig 2: Identifying CONSULT II Display - DATA MONITOR

Without CONSULT-II

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

VOLTAGE SPECIFICATION CHART

Connector	Terminals		Key position	Voltage (V) (Approx.)
Connector	(+)	(-)	Key position	Voltage (V) (Approx.)
D7	6	Ground	Neutral / Unlock	5
	6		Lock	0
	4		Neutral / Lock	5
	4		Unlock	0

Fig 3: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector And Ground

OK or NG

OK: Front door lock assembly LH (key cylinder switch) is OK.

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 (key cylinder switch).
3. Check continuity between main power window and door lock/ unlock switch connector D7 (A) terminals 4, 6 and front door lock assembly LH (key cylinder switch) connector D14 (B) terminals 3, 5.
  6 - 3 : Continuity should exist.
  
  4 - 5 : Continuity should exist.
  
  Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D7 (A) Terminals 4, 6
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 4 and ground.

4 - Ground : Continuity should exist.

Fig 5: Checking Continuity Between Front Door Lock Assembly LH Connector D14 Terminal 4 And Ground

OK or NG

OK: GO TO 4.

NG: Repair or replace harness.

CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)

Check continuity between front door lock assembly LH (key cylinder switch) terminals 3, 4 and 5.

TERMINAL CONTINUITY REFERENCE CHART

Terminals		Key position	Continuity
5	4	Neutral/Unlock	No
5		Lock	Yes
3		Neutral/Lock	No
3		Unlock	Yes

Fig 6: Checking Continuity Between Front Door Lock Assembly LH Terminals 3, 4 And 5

OK or NG

OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

NG: Replace front door lock assembly LH (key cylinder switch). Refer to "REMOVAL AND INSTALLATION ".