Front Door Switch LH Signal Inspection

With CONSULT-III 

1. Select "BCM".
2. With "DATA MONITOR" of "BUZZER", confirm "DOOR SW-DR" when the driver's door is operated.

   "DOOR SW-DR" 

   When driver's door is opened : ON 

   When driver's door is closed : OFF 

   Without CONSULT-III 

   Check voltage between BCM harness connector and ground.

   TERMINAL VOLTAGE REFERENCE
   
   

   Terminals			Condition	Voltage (Approx.)
   (+)		(-)
   BCM connector	Terminal
   M19	47	Ground	Driver's door is opened	0
   			Driver's door is closed	Battery voltage

   Fig 1: Checking Voltage Between BCM Harness Connector And Ground

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

   OK or NG 

   OK: Front door switch LH signal is OK. Return to "TROUBLE DIAGNOSIS ".

   NG: GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect BCM connector and front door switch LH connector.
3. Check continuity between BCM harness connector (A) and front door switch LH harness connector (B).
   TERMINAL CONTINUITY REFERENCE
   
   

   A		B		Continuity
   Connector	Terminal	Connector	Terminal
   M19	47	B21	2	Yes

   Fig 2: Checking Continuity Between BCM Harness And Front Door Switch LH Harness Connector Terminals

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between BCM harness connector (A) and ground.
   TERMINAL CONTINUITY REFERENCE
   
   

   A		Ground	Continuity
   Connector	Terminal
   M19	47		No

   OK or NG 

   OK: GO TO 3.

   NG: Repair harness or connector.

Check front door switch LH. Refer to "ELECTRICAL COMPONENT INSPECTION ".

OK or NG 

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

NG: Replace front door switch LH.