Power Window Switch Malfunction - Front
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Ignition ON, with a scan tool, observe the appropriate window switch parameters for the driver and front passenger window switches while activating all window switches to the UP, DOWN, and EXPRESS positions.
- If the readings do not change as the switches are activated, replace the appropriate door control module.
- Ignition OFF, disconnect the harness connector at the inoperative power window motor.
- Ignition OFF, test for less than 5.0 ohms between the power window motor ground circuit terminal 4 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, test for B+ between the B+ circuit terminal 3 and ground.
- If less than the specified range, test the B+ circuit for a short to ground or an open/high resistance.
- If all circuits test normal, test or replace the inoperative power window motor.