Front Door Lock Assembly LH (Key Cylinder Switch) Check

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

CHECK DOOR KEY CYLINDER SWITCH LH

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 6, 7 (without automatic sliding door system) or terminals 4, 6 (with automatic sliding door system) and ground.

Without Automatic Sliding Door System

TERMINALS VOLTAGE CHART

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

Fig 1: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector Terminals 6, 7 And Ground

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

With Automatic Sliding Door System

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

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 D14 terminal 5 and body ground.

TERMINALS CONTINUITY CHART

Connector	Terminals	Continuity
D14	5 - Ground	Yes

Fig 3: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) Connector 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.

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

OK or NG

OK: GO TO 4.

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

Fig 4: Checking Continuity Between Door Key Cylinder Switch LH Terminals 1, 6 And 5

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

CHECK DOOR KEY CYLINDER HARNESS

Check continuity between main power window and door lock/unlock switch connector (A) D7 terminals 6, 7 (without automatic sliding door system) or terminals 4, 6 (with automatic sliding door system) and front door lock assembly LH (key cylinder switch) connector (B) D14 terminals 1, 6 and body ground.

Without Automatic Sliding Door System

TERMINALS CONTINUITY CHART

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

Fig 5: Checking Continuity Between Door Lock/Unlock Switch Connector (A) Terminals 6, 7 And Front Door Lock Assembly Connector (B) Terminals 1, 6, And Between Connector (A) Terminals 6, 7 And Ground

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

With Automatic Sliding Door System

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	Ground		No
	6	Ground		No

Fig 6: Checking Continuity Between Door Lock/Unlock Switch Connector (A) Terminals 4, 6 And Front Door Lock Assembly Connector (B) Terminals 1, 6, And Between Connector (A) Terminals 4, 6 And 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.