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 control module; SUNROOF 20 A fuse. | 
 
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 SUNROOF 20 A fuse, the sunroof must  be
re-initialized. Refer to 
Sunroof Motor/Actuator 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.