Pic. 15.61. Component locations for power windows: 1 - the main power window switch located on the driver's door; 2 - ignition lock; 3 – the switch of a window regulator of a door of the driver; 4 - fuses and relays for power windows in the fuse and relay box; 5 - electric motors for front door windows; 6 - electric motors for window lifters of the rear doors
The electric window lifter raises or lowers the glass with an electric motor located in the door. The system consists of switches, relays, electric motors, power window mechanisms and electrical circuits connecting all components (pic. 15.61).
Raising or lowering the windows is controlled from the main switch located on the driver's door or separate switches located on each door. Each door has a reversible power window motor. The position of the switch determines the polarity of the voltage applied to the motor.
Each electrical circuit is protected by a fuse and circuit breaker (current relay). Each motor is also equipped with an internal circuit breaker.
Power windows operate only when the ignition is on.
Check the power windows as follows:
If the power windows do not work, first of all check the integrity of the fuse and the condition of the circuit breaker.
If only the rear doors power windows do not work or operate only from the main switch, check the switches located in the rear doors and replace them if necessary.
Check the electrical circuit between the switch and the fuse and relay box and repair if necessary.
If only one door power window is not working from the main switch, check the operation of the power window from the switch located on the door.
If the power window only works on one switch and does not work on the other, check the condition of that switch. If the switch is OK, check the electrical circuit between the switch and the relevant motor and repair if necessary.
If the window regulator does not work from any switch, remove the door upholstery and check for voltage at the switch and the electric motor with the switch on.
If voltage is applied to the motor, disconnect the glass from the power window mechanism, manually move the glass up and down, and check that the glass moves easily and without binding.
Also check the condition of the power window mechanism. If the power window mechanism is not damaged and the glass moves easily and without jamming, replace the electric motor.
If voltage is not being supplied to the motor, check the electrical circuit between the switch and the relevant motor and repair if necessary.
After troubleshooting, check the operation of the power windows.