The sunroof system consists of the sunroof assembly and
the following 3 electrical components:
| • | The sunroof control module |
The sunroof assembly has the following 3 positions:
| • | Closed (flush with the vehicle roof) |
| • | Open (retracted into the roof cavity) |
| • | Vented (rear of the glass raised to the travel limit) |
The sunroof actuator consists of the following components:
The sunroof switch is a rocker-type switch with the following 3 positions:
| • | Normal center OFF position |
| • | FORWARD/OPEN VENT position |
| • | REVERSE/CLOSE VENT position |
The sunroof control module controls the sunroof motor based on the inputs
from the sunroof switch and the limit switch. The control module has the following
special features:
| • | Express Open and Express Close Vent |
The express feature allows you to momentarily push the sunroof switch
in the FORWARD/OPEN VENT position in order to fully open or close the glass
from the vent position.
The stall sense stops the sunroof under the following conditions:
| • | The sunroof assembly is obstructed. |
| • | The sunroof assembly has reached the fully open position during
express open. |
The operation time out protects the sunroof against failure of the stall
sense. The control module stops the operation of the sunroof assembly after
20 seconds.
Power and Ground
The battery voltage is applied from the WINDOWS circuit breaker through
CKT 42 (RED) to the accessory time delay relay. The accessory time
delay relay applies voltage to the sunroof module through CKT 70
(PNK) under the following conditions:
| • | The ignition is in the RUN position. |
| • | The retained accessory power (RAP) is active. |
The sunroof control module is grounded at connector C1 terminal D
through CKT 1250 (BLK) to G401.
Limit Switch
The limit switch lets the sunroof control module know when the glass
is in the flush closed position.
When the sunroof is in the flush closed position, the limit switch closes,
grounding connector C2 terminal 8 of the sunroof control module
through CKT 132 (RED).
When the sunroof is not closed, the limit switch opens, removing ground
from connector C2 terminal 8.
The limit switch receives ground from the sunroof control module through
CKT 133 (YEL).
Express Feature
The sunroof control module enters the express open or express close
vent mode when connector C2 terminal 6 is momentarily grounded
through CKT 100 (BRN) by the sunroof switch. The module then applies
voltage through CKT 129 (LT GRN) and ground through CKT 127
(DK GRN) to the sunroof actuator. The sunroof control module drives the
sunroof actuator until one of the following actions occur:
| • | The sunroof switch is moved to the FORWARD/OPEN VENT position. |
| • | The sunroof switch is moved to the REVERSE/CLOSE VENT position. |
| • | The control module times out (20 seconds after the start
of the express mode). |
| • | The limit switch is closed. |
Closing, Venting
When the sunroof switch is held in the REVERSE/CLOSE VENT position,
connector C2 terminal 7 of the sunroof control module is grounded
through CKT 110 (ORN) by the sunroof switch. The control module
then applies voltage through CKT 127 (DK GRN) and ground through
CKT 129 (LT GRN) to the sunroof actuator assembly. The sunroof
control module drives the sunroof actuator until on of the following actions
occur:
| • | The sunroof switch is returned to the neutral position. |
| • | The limit switch is closed. |
| • | The control module times out (20 seconds after the start
of the REVERSE/CLOSE VENT command). |
