Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

Turn ignition switch ON.

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

VOLTAGE REFERENCE CHART

Terminals			Key position	Voltage (V) (Approx.)
(+)		(-)
Main power window and door lock/unlock switch connector	Terminal	(-)
D7	4	Ground	Lock	0
	4		Neutral / Unlock	5
	6		Unlock	0
	6		Neutral / Lock	5

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

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

Is the inspection result normal?

YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT ".

NO: GO TO 2

CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect main power window and door lock/unlock switch connector and front door lock assembly LH (key cylinder switch) connector.

Check continuity between main power window and door lock/unlock switch connector and front door lock assembly LH (key cylinder switch) connector.

CONTINUITY REFERENCE CHART

Main power window and door lock/unlock switch connector	Terminal	Front door lock assembly LH (key cylinder switch) connector	Terminal	Continuity
A: D7	4	B: D10	6	Yes
A: D7	6	B: D10	5	Yes

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

CONTINUITY REFERENCE CHART

Power window main switch connector	Terminal	Ground	Continuity
A: D7	4		No
	6

Fig 2: Checking Continuity Between Main Power Window And Door Lock/ Unlock Switch Connector And Ground

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

Is the inspection result normal?

YES: GO TO 3

NO: Repair or replace harness.

CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

Check continuity between front door lock assembly LH connector and ground.

CONTINUITY REFERENCE CHART

Front door lock assembly LH connector	Terminal	Ground	Continuity
D10	4	Ground	Yes

Fig 3: Checking Continuity Between Front Door Lock Assembly LH Connector And Ground

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

Is the inspection result normal?

YES: GO TO 4

NO: Repair or replace harness.

CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

NO: Replace front door lock assembly LH (key cylinder switch). Refer to "FRONT DOOR LOCK: REMOVAL AND INSTALLATION ". After that, refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT ".