Front Window Anti-Pinch
POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH : Description
Power window main switch, front power window switch (passenger side) and BCM transmit and receive the signal by power window serial link.
The signal mentioned below is transmitted from BCM to power window main switch and front power window switch (passenger side).
- Keyless power window down signal
The signal mentioned below is transmitted from power window main switch to front power window switch (passenger side).
- Front passenger side door window operation signal
- Power window control by key cylinder switch signal
- Power window lock switch signal
- Retained power operation signal
POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH : Diagnosis Procedure
1.CHECK POWER WINDOW SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect power window main switch connector.
3. Check signal between power window main switch harness connector and ground with oscilloscope when door lock and unlock switch (driver side and passenger side) is turned to "LOCK" or "UNLOCK".
4. Check that signals which are shown in the figure below can be detected during 10 seconds just after door lock and unlock switch (driver side and passenger side) is turned to "LOCK" or "UNLOCK".
Is the inspection result normal?
YES - Replace power window main switch. Refer to Front and Rear Window Anti-Pinch.
NO - GO TO 2.
2.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and power window main switch harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES - Replace BCM. Refer to Exploded View.
NO - Repair or replace harness.