C 3500 Truck 2WD V8-6.0L VIN U (2001)
Sunroof / Moonroof Motor: Description and Operation
The sunroof has a bi-directional motor. When the motor is not operating both circuits are grounded. When the motor drives the sunroof glass in the
direction from the vent position to the open position, the following occurs:
^
Voltage is supplied to the motor output 1 circuit.
^
Ground is maintained to the motor output 2 circuit.
When the motor drives the sunroof in the direction from the open position to the vent position, the following occurs:
^
Voltage is supplied to the motor output 2 circuit.
^
Ground is maintained to the motor output 1 circuit.
The sunroof module is equipped with a timer circuit which stops the operation of the sunroof motor after 15 seconds.
