Front Door Lock Assembly LH (Key Cylinder Switch) Check

WARNING: This page is about a different car, the 2006 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR KEY CYLINDER SWITCH LH

With CONSULT-II

Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".

When key inserted in front key cylinder is turned to LOCK:
KEY CYL LK-SW : ON
When key inserted in front key cylinder is turned to UNLOCK:
KEY CYL UN-SW : ON

Fig 1: CONSULT II 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 D7 terminals 4, 6 and ground.

TERMINALS VOLTAGE CHART

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

Fig 2: Identifying Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 4, 6 And Ground

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

OK or NG

OK : Front door lock assembly LH (key cylinder switch) signal is OK.
NG : GO TO 2.

CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS

Check continuity between front door lock assembly LH (key cylinder switch) connector (A) D14 terminal 5 and body ground.

TERMINALS CONTINUITY CHART

Connector	Terminals	Continuity
D14	5 - Ground	Yes

Fig 3: Identifying Continuity Between Front Door Lock Assembly LH Connector D14 Terminal 5 And Body Ground

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

OK or NG

OK : GO TO 3.
NG : Repair or replace harness.

CHECK DOOR KEY CYLINDER SWITCH LH

Check continuity between front door lock assembly LH (key cylinder switch) terminals.

TERMINALS CONTINUITY CHART

Terminals	Condition	Continuity
1 - 5	Key is turned to UNLOCK or neutral.	No
1 - 5	Key is turned to LOCK.	Yes
5 - 6	Key is turned to LOCK or neutral.	No
5 - 6	Key is turned to UNLOCK.	Yes

Fig 4: Identifying Continuity Between Front Door Lock Assembly LH Terminals

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

OK or NG

OK : GO TO 4.
NG : Replace front door lock assembly LH (key cylinder switch). Refer to "FRONT DOOR LOCK ".

CHECK DOOR KEY CYLINDER HARNESS

Check continuity between main power window and door lock/unlock switch connector (A) D7 terminals 4, 6 and front door lock assembly LH (key cylinder switch) connector (B) D14 terminals 1, 6 and body ground.

TERMINALS CONTINUITY CHART

Connector	Terminals	Connector	Terminals (wire color)	Continuity
A: Main power window and door lock/unlock switch	4	B: Front door lock assembly LH (key cylinder switch)	1	Yes
	6	B: Front door lock assembly LH (key cylinder switch)	6	Yes
	4, 6	Ground		No

Fig 5: Identifying Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 4, 6 And Front Door Lock Assembly LH Connector D14 Terminals 1, 6 And Body Ground

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

OK or NG

OK : Replace main power window and door lock/unlock switch.
NG : Repair or replace harness.