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 SPECIFICATION

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 Connector D7 Terminals 4, 6 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 SPECIFICATION

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.

Fig 2: Checking Continuity Between Main Power Window And Door Lock

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

CONTINUITY SPECIFICATION

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

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 SPECIFICATION

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

Is the inspection result normal?

YES: GO TO 4

NO: Repair or replace harness.

Fig 3: Checking Continuity Between Door Lock Assembly LH (Key Cylinder Switch) Connector Terminal 4 And Ground

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

CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: 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 ".