Grand Cherokee 2WD V8-5.7L VIN 2 (2005)
Sunroof / Moonroof Switch: Testing and Inspection
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 confirmation that the Controller Area Network (CAN) Data Bus circuit 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/module assembly is being sent the proper hard wired output by the sunroof
switch.
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 completing the appropriate diagnostic information
results in the sunroof switch being inoperative, perform the following test prior to switch replacement.
1. Disconnect and isolate the battery negative cable.
2. Remove the overhead console.
3. Disconnect the power sunroof switch wire harness connector.
Power Sunroof Switch Continuity Table
4. Using an ohmmeter, test the continuity of the power sunroof switch in each switch position. If OK, inspect the wiring harness and connectors for
damage. Use a scan tool and the proper Diagnostic Procedures Information to complete diagnosis of the power sunroof system. If not OK, replace
the overhead console.