The sunroof motor/actuator supplies voltage to the contacts of the sunroof switch through the sunroof switch close signal circuit and the sunroof switch open signal circuit. When the switch is operated, the contacts and signal circuit for the selected mode are closed to ground, the voltage is pulled low in the sunroof motor/actuator, and the appropriate signal is recognized. The sunroof motor/actuator then internally applies battery positive voltage and ground to the appropriate circuits of the reversible power sunroof motor in order to move the sunroof glass panel to the open, close, or vent position.

Schematic Reference

Sunroof Schematics

Connector End View Reference

Sunroof Connector End Views

Description and Operation:

Sunroof Description and Operation

Electrical Information Reference

1. With the sunroof in the closed position, press the sunroof open switch. The sunroof should open.
2. With the sunroof in the open position, press the sunroof close switch. The sunroof should close.

1. Ignition OFF, disconnect the harness connector at the sunroof motor.
2. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit terminal 7 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 8 and ground.

⇒	If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to Retained Accessory Power (RAP) Inoperative .

4. Verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for an open/high resistance. If the B+ circuit fuse is open, test the B+ circuit for a short to ground. If the circuit tests normal, replace the sunroof motor.

5. Ignition OFF, connect the harness connector at the sunroof motor. Disconnect the harness connector at the sunroof switch.
6. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

7. Ignition ON, test for B+ between the signal circuit terminal G and ground.

⇒	If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the sunroof motor.

8. Test for B+ between the signal circuit terminal F and ground.

⇒	If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the sunroof motor.

9. If all circuits test normal, test or replace the sunroof switch.

Sunroof Switch

1. Ignition OFF, disconnect the harness connector at the sunroof switch.
2. Test for infinite resistance between the following terminals at the sunroof switch with the switch in the neutral position:

•	Signal circuit terminal G

•	Signal circuit terminal F

•	Ground circuit terminal A

⇒	If not the specified value, replace the sunroof switch.

3. Test for less than 2.0 ohms of resistance between the signal circuit terminal G and the low reference circuit terminal B at the sunroof switch with the switch in the Sunroof Open position.

⇒	If greater than the specified range, replace the sunroof switch.

4. Test for less than 2.0 ohms of resistance between the signal circuit terminal F and the low reference circuit terminal A at the sunroof switch with the switch in the Sunroof Close position.

⇒	If greater than the specified range, replace the sunroof switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.