Front Door Lock Assembly LH (Key Cylinder Switch) Check

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FRONT DOOR LOCK ASSEMBLY (KEY CYLINDER SWITCH)

With CONSULT-III

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

Without CONSULT-III

Check voltage between main power window and door lock/unlock switch connector D7 terminals 4, 6 and ground.

MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH CONNECTOR D7 TERMINALS 4, 6 AND GROUND

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 1: Checking Voltage Between Main Power Window And Connector D7 Terminals 4, 6 And Ground

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

OK or NG

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

NG: GO TO 2.

CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS

Turn ignition switch OFF.
Disconnect front door lock assembly LH (key cylinder switch).
Check continuity between front door lock assembly LH (key cylinder switch) connector D51 terminal 5 and body ground.

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CONNECTOR D51 TERMINAL 5 AND BODY GROUND

Connector	Terminals	Continuity
D51	5 - Ground	Yes

Fig 2: 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.

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.

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)

Terminals	Door key cylinder switch position	Continuity
1 - 5	Neutral/Unlock	No
1 - 5	Lock	Yes
5 - 6	Neutral/Lock	No
5 - 6	Unlock	Yes

Fig 3: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) 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) D51 terminals 1, 6 and body ground.

DOOR KEY CYLINDER HARNESS

Connector	Terminal	Connector	Terminal	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	Ground		No
	6	Ground		No

Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector Terminals 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.