POWER WINDOW MAIN SWITCH: Diagnosis Procedure
- CHECK POWER WINDOW SWITCH INPUT SIGNAL
- Turn ignition switch OFF.
- Disconnect power window main switch connector.
- 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".
- 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".
(+) (-) Signal (Reference value) Power window main switch Connector Terminal D8 14 Ground Is the inspection result normal?
YES: Replace power window main switch. Refer to "REMOVAL AND INSTALLATION ".
NO: GO TO 2.
- CHECK POWER WINDOW SERIAL LINK CIRCUIT
- Disconnect BCM connector.
- Check continuity between BCM harness connector and power window main switch harness connector.
BCM Power window main switch Continuity Connector Terminal Connector Terminal M123 132 D8 14 Existed - Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M123 132 Not existed Is the inspection result normal?
YES: Replace BCM. Refer to "EXPLODED VIEW ".
NO: Repair or replace harness.