DRIVER SIDE: Diagnosis Procedure

1. Read voltage signal between BCM connector and ground with oscilloscope when door lock and unlock switch (driver side) is turned "LOCK" or "UNLOCK".
Fig 1: Checking Voltage Signal Between BCM Connector And Ground With Oscilloscope
Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (driver side) is turned to "LOCK" or "UNLOCK".

Terminal			Condition	Signal (Reference value)
(+)		(-)
BCM connector	Terminal
M18	40	Ground	Door is closed	Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal? 

YES: GO TO  4

NO: GO TO 2

1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch connector.
3. 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.

Is the inspection result normal? 

YES: GO TO 3

NO: Repair or replace harness.

1. Disconnect BCM connector.
2. Check continuity between BCM connector and main power window and door lock/unlock switch connector.
   CONTINUITY CHART
   
   

   BCM connector	Terminal	Main power window and door lock/unlock switch connector	Terminal	Continuity
   A: M18	40	B: D7	14	Yes

3. Check continuity between BCM connector and ground.
   CONTINUITY CHART
   
   

   BCM connector	Terminals		Continuity
   A: M18	40	Ground	No

   Fig 3: Checking Continuity Between BCM 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.

Refer to "INTERMITTENT INCIDENT ".

Inspection End.