Electronic Window Lifts

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WIRING DIAGRAM

Electrically Window Lifts: Component Location:

COMPONENT LOCATION VIEW

Electrically Window Lifts: Component ID:

COMPONENT ID
16 Rheostat, lighting for instruments and controls, on dashboard between the steering wheel and driver's door.
22a Fuse board behind the access panel in the glove box.
164D Motor, left-hand electric window lift, in driver's door.
164P Motor, right-hand electric window lift, in passenger's door.
190RL Switch, left-hand rear door electric window lift, on the left-hand rear door.
190RR Switch, right-hand rear door electric window lift, on the right-hand rear door.
194RL Motor, left-hand rear door electric window lift, in the left-hand rear door.
194RR Motor, right-hand rear door electric window lift, in the right-hand rear door.
231 Distribution terminal (+54 circuit), in main fuse box behind the glove box.
386 Switch, electric window lifts, on the centre console between the front seats.
514a Switch, simultaneous operation of central locking, in 386.

2-Pin Connectors
H2-13 In the right-hand front door, beside the window lift.
H2-27 In the right-hand rear door, beside the window lift.
H2-35 In the left-hand front door, beside the locking mechanism.
H2-39 In the left-hand rear door, beside the locking mechanism.

10-Pin Connectors
H10-5 Under the left-hand seat.
H10-22 In the right-hand B pillar.
H10-24 In the left-hand B pillar.

22-Pin Connectors
H22-1 Behind the cable entry in the left-hand A pillar.
H22-2 Behind the cable entry in the right- hand A pillar.

Grounding Points
G14 Grounding point, left-hand front seat member.

DESCRIPTION OF OPERATION
All electric window lifts in the car can be operated by means of a switch on the centre console between the front seats. The window lifts in the rear doors can also under certain circumstances be operated by means of a switch in each door.
^ Switch 386 for operating the window lifts in the front doors is supplied with current via fuse 11.
^ Switch 386 for operating the window lifts in the rear doors is supplied with current via fuse 9.
^ If the ON/OFF switch is closed (ON), the window lifts in the rear doors can also be operated by means of switch 190RL on the left-hand rear door and 190RR on the right-hand rear door.
^ If the ON/OFF switch is open (OFF), the switches on the rear doors will be inoperative. The window lifts in the rear doors can then be operated only by means of switch 386 on the centre console.
^ Pressing the "window" symbol on any of the switches lowers the corresponding window. Pressing the part of the switch with no symbol rolls the window up.

Automatic Window Lift Control
The switches on the front doors are different to the other switches in that they have two positions for lowering the window and one position for rolling up the window.

DOWN Position 1: The window descends as long as the switch is held in this position. Positive current is supplied to motor 164 via pin 18 or to motor 165 via pin 6 of the switch.

DOWN Position 2: The window goes all the way down, even if the switch is released after a moment or two. The coil in the relays, integrated into the switch, is supplied with positive current and the relays operate. Due to a time-delay function in the relays, the supply of current is maintained until the window is completely open, even if the switch is released almost at once. This function can be cancelled by moving the switch to the "UP" position.

UP: The window rolls up as long as the switch is held in this position. Positive current is supplied to motor 164D via pin 19 or to motor 164P via pin 7 of the switch.

FAULT DIAGNOSIS HINTS
The electric window lifts will be operative when the ignition switch is in the Drive position.

A TIP
To avoid damaging the centre console, and to remove switch 386 from the centre console in the easiest possible way when taking readings, proceed as follows:
There is a flap where the covering part, centre console and floor carpet meet. If this flap is pulled out slightly, a hand can be introduced under it to press out the switch from behind.

1. Check that fuses 9 and 11 are intact and supplied with current.
2. Check that current is supplied to pins 10 and 11 of switch 386.
3. Check that pins 18, 6, 14 and 2 are supplied with current when the windows are lowered.
4. Check that pins 19, 7,13 and 1 are supplied with current when the windows are raised.
5. If the window lifts in the rear doors cannot be operated by means of the switches on the doors, check that current is supplied via pin 9 of the switch.
6. Check the operation of the switches on the rear doors by taking instrument readings on their electrical connections.
7. Check the connectors, wiring harness and ground connections.