Operation CHARM: Car repair manuals for everyone.

Sunroof



Sunroof







The sunroof consists of sunroof unit with a glass hatch fixed to two lifting units. The hatch is driven with wires from an electric motor located in the front of the unit.

There is a switch on the front roof console to operate the sunroof.

The glass hatch can be slid backwards-forwards and also lifted at the back (tilted).

The glass hatch is operated by a three-way switch. When it is closed and the switch is activated for opening backwards for longer than 0.4 seconds, the hatch will automatically open 83% (comfort position). To stop the hatch while it is opening automatically, the switch can be pressed upwards or briefly to the close position. When the switch is again pressed for opening after stopping the hatch in this way, the hatch will automatically continue to the comfort position. To completely open the hatch, the switch must be kept pressed until the hatch reaches its rear stop position.

Only backwards opening can be performed automatically. The switch must be pressed continuously to close the hatch.

The sunroof unit is drained via four hoses, one in each corner of the unit







Voltage +30

+30 voltage is supplied via fuse 10 to pin 5 of the electric motor.

Voltage +15

The electric motor is also supplied with +15 on pin 1 via fuse 26.

When the ignition is switched off, the electronics of the electric motor goes in to energy saving mode after 1 second. When the ignition is switched on, +15 voltage wakes the electronics of the electric motor and informs it that the ignition is switched on.

Ground

The electric motor is grounded through pin 6 to grounding point G33.







Switch

When the switch is pressed, the respective pins on the electric motor are grounded and the motor starts to operate.

The hatch opens completely when the electric motor pin 3 is grounded via pin 4 of the switch.

When the hatch is tilted, the electric motor pin 2 is grounded via pin 2 of the switch.

The hatch closes when the electric motor pin 4 is grounded via pin 3 of the switch.