Sunroof / Moonroof: Testing and Inspection

Power Sunroof Does Not Work

Step 1 - 10:

Step 11 - 21:

Step 22 - 24:

Test Description
The numbers below refer to stepson the diagnostic table.
3. The terminals are not marked on the relay socket, but the terminals are marked on the underside of the relay.
20. The meter will show the same voltage at both switch positions but one of the switch positions will show reverse polarity.