Component Tests and General Diagnostics

1. Before attempting any electrical diagnosis, make sure that the Sunroof is not binding due to a mechanical failure.
2. Check the Power Window Circuit Breaker.
3. Check that G349 is clean and tight.

^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check.
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.