Power Sunroof

DIAGNOSTIC PROCEDURES

NOTE: Before beginning sunroof diagnostics verify that all other power accessories are in proper operating condition. If not, a common electrical problem may require diagnosis and repair prior to further sunroof service.

Any diagnosis of the power sunroof system should begin with the use of a scan tool and the proper Diagnostic Procedures Information. The scan tool can provide Diagnostic Trouble Code (DTC) information, confirmation that the Controller Area Network (CAN) Data Bus is functional, that all of the electronic modules are sending and receiving the proper messages on the CAN Data Bus, and that the power sunroof motor is being sent the proper hard wired output by the sunroof switch.

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.

Refer to the appropriate diagnostic information.

If no DTCs are present, refer to the SUNROOF DIAGNOSIS TABLE for possible causes.

If the glass panel does not fully move to the desired position the sunroof motor/module may need to be initialized. Programming and Relearning to initialize the motor.

SUNROOF DIAGNOSIS TABLE






Before beginning diagnosis for wind noise or water leaks, verify that the problem was not caused by releasing the control switch before the sunroof was fully closed. The sunroof module has a water-management system. If however, the sunroof glass is in a partial closed position, high pressure water may be forced beyond the water management system boundaries and onto the headlining.