Diagnosis Procedure

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 with CONSULT-III.

When key inserted in left front key cylinder is turned to LOCK:
KEY CYL LK-SW: ON

When key inserted in left 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.

VOLTAGE SPECIFICATION

Connector	Terminals		Condition of left front key cylinder	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition of left front key cylinder	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.

Is the inspection result normal?

YES: Key cylinder switch signal is OK.

No: 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 (A) D14 terminal 5 and body ground.

CONTINUITY CHART

Connector	Terminals	Continuity
D14	5 - Ground	Yes

Fig 2: Checking Continuity Between Front Door Lock Assembly LH Connector D51 Terminal 5 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 LH

Check continuity between front door lock assembly LH (key cylinder switch) 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 3: Checking Continuity Between Door Key Cylinder Switch LH Terminals 1, 6 And 5

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

Is the inspection result normal?

YES: GO TO 4

No: 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.

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 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.

Is the inspection result normal?

YES: Replace main power window and door lock/unlock switch.

No: Repair or replace harness.