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Power Window Serial Link


POWER WINDOW SERIAL LINK:_:FRONT POWER WINDOW SWITCH





Description
- Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM communicate via the power window serial link.
- The keyless power window down signal is transmitted from BCM to main power window and door lock/unlock switch and power window and door lock/unlock switch RH.
- The following signals are transmitted from main power window and door lock/unlock switch to power window and door lock/unlock switch RH:
- Front door window RH operation
- Power window control by key cylinder switch
- Power window lock switch
- Retained accessory power operation




Diagnosis Procedure
Regarding Wiring Diagram information, With Front And Rear Power Window Anti-Pinch System.
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH





1. Remove Intelligent Key, and close the front door LH and RH.
2. Check signal between BCM connector M18 terminal 40 and ground with oscilloscope when door lock and unlock switch (key cylinder switch) is turned to "LOCK" or "UNLOCK".
3. Check that signals which are shown in the figure below can be detected during 10 seconds just after door lock and unlock switch (key cylinder switch) is turned to "LOCK" or "UNLOCK".





Is the inspection result normal?
YES - Power window serial link is OK.
NO - GO TO 2
2. CHECK POWER WINDOW SERIAL LINK CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM connector M18 and power window and door lock/unlock switch RH connector.
3. Check continuity between BCM connector M18 (A) terminal 40 and power window and door lock/unlock switch RH connector D105 (B) terminal 16.





4. Check continuity between BCM connector M18 (A) terminal 40 and ground.





Is the inspection result normal?
YES - Replace main power window and door lock/unlock switch. LH&RH Front Window Anti-Pinch.
NO - Repair or replace harness or connectors.




Special Repair Requirement
1. PERFORM INITIALIZATION PROCEDURE
Perform initialization procedure. Special Repair Requirement and Special Repair Requirement.
- GO TO 2
2. CHECK ANTI-PINCH OPERATION
Check anti-pinch operation. Special Repair Requirement and Special Repair Requirement.
- End.
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