Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK DOOR KEY CYLINDER SWITCH
   
   

   With CONSULT

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

   • 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

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

   Fig 1: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 4, 6 And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Connector	Terminals		Condition of left front key cylinder	Voltage (V) (Approx.)
   	(+)	(-)
   D7	4	Ground	Neutral/Unlock	5
   			Lock	0
   	6		Neutral/Lock	5
   			Unlock	0

   Is the inspection result normal?

   YES 

   Key cylinder switch signal is OK.

   NO 

   GO TO STEP 2 

2. CHECK DOOR KEY CYLINDER SWITCH GROUND HARNESS
   
   
   1. Turn ignition switch OFF.
   2. Disconnect front door lock assembly LH (key cylinder switch).
   3. Check continuity between front door lock assembly LH (key cylinder switch) connector D14 terminal 5 and body ground.
   Fig 2: Checking Continuity Between Front Door Lock Assembly LH Connector D14 Terminal 5 And Body Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Connector	Terminals	Continuity
   D14	5 - Ground	Yes

   Is the inspection result normal?

   YES 

   GO TO STEP 3 

   NO 

   Repair or replace harness.

3. CHECK DOOR KEY CYLINDER SWITCH
   
   

   Check continuity between front door lock assembly LH (key cylinder switch) terminals.

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

   Courtesy of NISSAN NORTH AMERICA, INC.

   Terminals	Condition	Continuity
   1 - 5	Key is turned to UNLOCK or neutral.	No
   	Key is turned to LOCK.	Yes
   5 - 6	Key is turned to LOCK or neutral.	No
   	Key is turned to UNLOCK.	Yes

   Is the inspection result normal?

   YES 

   GO TO STEP 4 

   NO 

   Replace front door lock assembly LH (key cylinder switch). Refer to REMOVAL AND INSTALLATION .

4. 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.

   Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 4, 6 And Front Door Lock Assembly LH (Key Cylinder Switch) Connector D14 Terminals 1, 6 And Body Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Connector	Terminals	Connector	Terminals	Continuity
   A D7	4	B D14	1	Yes
   	6		6	Yes
   	4, 6	Ground		No

   Is the inspection result normal?

   YES 

   Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace harness.