Diesel Data: Automotive Repair

Testing Electrical System

The electrical system consists of:
^ Wiring harness with 20 amp fuse.
^ Actuation switch.
^ Logic Module.
^ Sensor Magnet (rear guide).

1. Check operation of other electrical accessories in vehicle in order to confirm problem is in sunroof system.
2. Using test light, confirm current at fuse connector and both sides of switch. Disconnect at sensor and attempt to cycle. Replace logic module. Attempt to cycle, holding switch in on position, check current at drive assembly. Replace defective component.