Power Sunroof System Components
The power sunroof system consists of the following components:
• | The sunroof module, includes motor |
• | The rail and track assembly upon which the sunroof glass rides |
• | Power supply for the sunroof module; CTSY LP 15 A fuse,
for the memory function of the sunroof module and the PWR WDO 25 A
circuit breaker, that is controlled by the body control module (BCM) for retained
accessory power operation |
Power Sunroof Operation
The power sunroof will operate with the ignition switch turned to Accessory
or RUN. Once the ignition switch is turned to OFF, from RUN, the sunroof will
continue to operate until any door is open or when the Retained Accessory
Power (RAP) has timed out. For a complete description of the RAP operation,
refer to
Retained Accessory Power (RAP) Description and Operation
in Retained Accessory Power.
Important: After a power loss to the sunroof module through the battery positive
voltage circuit protected by the CTSY LP 15 A fuse, the sunroof must
be re-initialized. Refer to
Sunroof Motor Synchronization
.
Use the rocker type sunroof switch to command the sunroof to :
Pressing the sunroof switch rearward, the sunroof glass will slide from:
• | Vent position to the closed position |
• | Closed position to the open position |
Pressing the sunroof switch forward, the sunroof glass will slide from:
• | Open position to the closed position |
• | Closed position to the vent position |
Express Open
The express open will work from the closed or partially open position.
To express open the power sunroof, momentarily press the sunroof switch rearward.
This will apply voltage momentarily through the sunroof switch open/tilt down
contacts through the sunroof switch open signal circuit to the sunroof module
indicating an express open request. From the closed position the sunroof glass
will lower slightly, then automatically slide open the glass between the roof
and the headliner, to the full open position. As the sunroof glass expresses
open, the wind deflector will raise upward and the sunshade will move with
the sunroof glass. To stop the sunroof glass in a desired position other than
to the express open position, press the sunroof switch in either direction
to stop the movement.
To Close
To close the power sunroof from the:
• | Open position -- press and hold the sunroof switch forward.
This will apply voltage through the sunroof switch close/tilt up contacts
through the sunroof switch close signal circuit to the sunroof module. The
sunroof switch close/tilt up input at the sunroof module needs to have constant
voltage applied, switch pressed, to allow the motor to drive the sunroof glass
until it reaches the closed position. The wind deflector will retract prior
to the sunroof glass reaching the fully closed position. To close the sunshade,
this will have to be manually slid closed. |
• | Vent position -- press and hold the sunroof switch rearward.
This will apply voltage through the sunroof switch open/tilt down contacts
through the sunroof switch circuit to the sunroof module. The sunroof switch
open/tilt down input to the sunroof module needs to have constant voltage
applied, switch pressed, to allow the motor to tilt the sunroof glass down
to the fully closed position. |
To Vent Open
To open the power sunroof to the vent position from the closed position,
press and hold the sunroof switch forward. This will apply voltage through
the sunroof switch close/tilt up contacts through the sunroof switch close
signal circuit to the sunroof module. The sunroof switch close/tilt up input
to the sunroof module needs to have constant voltage applied, switch pressed,
to allow the motor to tilt the rear of the sunroof glass upward to the vent
position.
Sunroof Motor
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 sunroof motor open control/output 1
circuit. |
• | Ground is maintained to the sunroof motor close control/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 sunroof motor close control/output
2 circuit. |
• | Ground is maintained to the sunroof motor open control/output
1 circuit. |
The sunroof module is equipped with a timer circuit which stops the
operation of the sunroof motor after 15 seconds.
The sunroof glass will hard stop each time the sunroof glass reaches
the following:
The hard stop will cause an over current condition that the sunroof
module monitors. As an over current condition or hard stop is detected, the
sunroof module will stop any motor control outputs.