DRIVER SIDE: Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITHOUT INTELLIGENT KEY SYSTEM ".

1. CHECK DOOR LOCK ACTUATOR SIGNAL 
   1. Turn ignition switch OFF.
   2. Check voltage between BCM connector M20 terminals 59, 65 and ground.

      Connector	Terminals		Condition	Voltage (V) (Approx.)
      	(+)	(-)
      M20	59	Ground	Driver door lock/unlock switch is turned to UNLOCK	0 → Battery voltage
      	65		Driver door lock/unlock switch is turned to LOCK	0 → Battery voltage

      Fig 1: Checking Door Lock Actuator Signal Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 2

      NO: GO TO  3

2. CHECK DOOR LOCK ACTUATOR HARNESS 
   1. Disconnect BCM and front door lock assembly LH (actuator).
   2. Check continuity between BCM connector (A) M20 terminals 59, 65 and front door lock assembly LH (actuator) connector (B) D14 terminals 2, 3.

      Connector	Terminals	Connector	Terminals	Continuity
      M20	59	D14	2	Yes
      	65		3	Yes

      Fig 2: Checking Door Lock Actuator Harness

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Replace front door lock assembly LH (actuator).

      NO: Repair or replace harness.

3. CHECK DOOR LOCK ACTUATOR HARNESS 
   1. Disconnect BCM and front door lock assembly LH (actuator).
   2. Check continuity between BCM connector M20 terminals 59, 65 and ground.

      Connector	Terminals		Continuity
      M20	59	Ground	No
      	65		No

      Fig 3: Checking Continuity Between BCM Connector M20 Terminals 59, 65 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.