Sunroof / Moonroof Motor: Testing and Inspection

MOTOR/MODULE

For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

If the power top is completely inoperative perform the following diagnostic steps.

1. Check the Accessory delay 30 amp Circuit breaker in the Junction Block. If OK, go to STEP 2. If not OK, repair the shorted circuit or component as required and replace the inoperative circuit breaker.
2. Partially remove the headliner to access the sunroof motor/module.
3. Disconnect the motor/module electrical connector. With the ignition switch in the "RUN" position check for Battery voltage at the Accessory Relay Output terminal of the harness connector. If OK, go to STEP 4. If not OK repair the Accessory Relay Output circuit as necessary.
4. Using an ohmmeter test for continuity between the harness connector ground circuit and a known good ground. Continuity should be present. If OK, go to STEP 5. If not OK, repair the open ground circuit as necessary.
5. Turn the ignition switch to the "OFF" position. Reconnect the motor/module electrical connector. With the ignition switch in the "RUN" position check for 5 volts on the "VENT", "CLOSE" and "OPEN" control circuits at the back side of the motor/module connector. If OK, go to STEP 6. If not OK, replace the motor/module assembly, Sunroof Motor With Control Unit - Removal.
6. Turn the ignition switch to the "OFF" position. Disconnect the motor/module and sunroof switch electrical connectors. Using an ohmmeter check for continuity on the "VENT", "CLOSE" and "OPEN" circuits between the motor/module and sunroof switch. Continuity should be present. If OK, Testing and Inspection for diagnosis of the sunroof switch. If not OK, repair the control circuits as necessary.