Power Window Serial Link Check

1. Remove Intelligent Key, and close front door LH and RH.
2. Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch (LH and RH) is turned to "LOCK" or "UNLOCK".
3. Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (LH and RH) is turned to "LOCK" or "UNLOCK".

   Terminal			Signal (Reference value)
   (+)		(-)
   BCM connector	Terminal
   M18	54	Ground	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES 

Power window serial link is OK.

NO 

GO TO STEP 2  .

1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock switch.
3. Check continuity between BCM connector M18 and main power window and door lock/unlock switch connector D7.

   BCM connector	Terminal	Main power window and door lock/unlock switch connector	Terminal	Continuity
   M18	54	D7	11	Yes

4. Check continuity between BCM connector M18 and ground.

   BCM connector	Terminal	Ground	Continuity
   M18	54		No

Is the inspection result normal?

YES 

Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION . After that, refer to ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT SPECIAL REPAIR REQUIREMENT .

NO 

Repair or replace harness or connectors.