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 FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)

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 in 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 "REMOVAL AND INSTALLATION ".

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	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 Connector D7 Terminals 4, 6 And 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.