DESCRIPTION & OPERATION
A window switch, located at each door panel, controls voltage applied to its respective window motor. (Scheme 1) Driver-side master power window switch has 3 additional buttons for control of each passenger window. In addition, master switch has an automatic lowering feature for driver-side window. When activated, a bi-polar relay is energized and remains on until window completes its travel in the down direction.
With ignition on, battery voltage from P/WIND 20-amp fuses is applied to master power window switch. Driver can control power distributed to passenger window switches with a lock-out feature incorporated into master window switch. By toggling a window switch to desired position, power is supplied to appropriate window motor.
| WARNING | Deactivate air bag system before performing any service operation. See DISABLING & ACTIVATING AIR BAG SYSTEM in AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy. |
Note. Anytime battery cables are disconnected from battery and then reconnected, theft deterrent system will operate (horn will sound and emergency lights will flash for about 3 minutes). To disarm system, insert ignition key and turn key to ACC position.
Scheme 1
- Check for blown P/WIND LH (20-amp) or P/WIND RH (20-amp) fuse, located in engine compartment fuse box. If fuses are okay, go to next step. If fuses are blown, locate and repair short to ground in power window circuit. See «WIRING DIAGRAMS»(ref-154662-S27928657442003052000000) . Replace fuse(s). Retest system.
- Turn ignition on. Verify battery voltage to fuse. If battery voltage exists, go to next step. If battery voltage does not exist, check battery condition and power feed to fuse box. Repair as necessary. Retest system.
- Turn ignition on. Using a voltmeter connected to ground, backprobe Pink/Blue and Pink wires at master power window switch. If battery voltage exists on both circuits, go to next step. If battery voltage does not exist on either circuit, repair open or short to ground in Pink/Blue wire to P/WIND LH fuse or in Pink wire to P/WIND RH fuse. Retest system.
- Turn ignition off. Using an ohmmeter connected to ground, backprobe Black wire at master power window switch. If continuity exists, replace master power window switch. If continuity does not exist, repair open in Black wire between master power window switch and chassis ground. Retest system.