Power Sunroof Inoperative w/RPO CF5

The sunroof control module supplies voltage to the sunroof switch through the sunroof switch open and close signal circuits. It also supplies ground to the sunroof switch through the switch low reference circuit. When the roof open or closed switch is pressed, ground is applied through the switch contacts and the appropriate signal circuit to the control module. The control module 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 vent, open or close position.

Schematic Reference

Sunroof Schematics

Connector End View Reference

Sunroof Connector End Views

Description and Operation

Sunroof Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. With the sunroof in the closed position, press the sunroof open switch. The sunroof should vent.
2. With the sunroof in the closed position, press and hold the sunroof open switch for 2 seconds. The sunroof should open.
3. 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 switch.
2. Test for less than 5 ohms between the low reference circuit terminal B and ground.

⇒	If greater than the specified range, test the following ground circuits for an open/high resistance. If the circuits test normal, replace the sunroof motor/actuator.

•	Sunroof switch low reference circuit terminal B

•	Sunroof motor/actuator harness connector ground circuit terminal 1

3. Connect a 3A fused jumper wire between the following sunroof switch signal circuits and ground. The roof should be inoperative in at least one or more directions.

•	Terminal C sunroof switch open signal

•	Terminal A sunroof switch close signal

⇒	If the roof moved in all directions, replace the sunroof switch.

4. Ignition OFF, disconnect the harness connector at the sunroof control module.
5. Test for less than 5 ohms between the ground circuit terminal 1 and ground.

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

6. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.

⇒	If the test lamp does not illuminate, repair the B+ circuit for a short to ground or an open/high resistance.

7. Verify that a test lamp illuminates between the ignition voltage circuit terminal 3 and ground.

⇒	If the test lamp does not illuminate, repair the ignition voltage circuit for a short to ground or an open/high resistance.

8. Ignition OFF, connect the harness connector at the sunroof control module.
9. Ignition ON, test for B+ between the following sunroof switch signal circuits and ground.

•	Sunroof switch open signal terminal C.

•	Sunroof switch close signal terminal A.

⇒	If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the sunroof control module.

10. If all circuit test normal, replace the sunroof control module.

Sunroof Switch

1. Ignition OFF, disconnect the harness connector sunroof switch.
2. Test for infinite resistance between the following sunroof switch signal terminals and the low reference circuit terminal B.

•	Sunroof switch open signal circuit terminal C.

•	Sunroof switch close signal circuit terminal A.

⇒	If less than the specified value, replace the sunroof switch.

3. Test for less than 5 ohms between the sunroof switch open signal terminal D and the ground circuit terminal B with the switch in the closed position.

•	Sunroof switch open signal circuit terminal C.

•	Sunroof switch close signal circuit terminal A.

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

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.