Component Testing
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the sunroof switch.
- Test for infinite resistance between the sunroof switch terminals listed below and the ground circuit terminal 5 with the switch in the open position.
- Vent express terminal 1
- Sunroof close terminal 2
- Vent open terminal 4
- Vent close terminal 6
- Sunroof express terminal 7
- Sunroof roof open terminal 8
- If less than the specified range, replace the sunroof switch.
- Test for less than 3 Ω between the sunroof switch terminals listed below and the ground circuit terminal 5 and with the switch in the appropriate position.
- Vent express terminal 1
- Sunroof close terminal 2
- Vent open terminal 4
- Vent close terminal 6
- Sunroof express terminal 7
- Sunroof roof open terminal 8
- If greater than the specified range, replace the sunroof switch.
NOTE:
If the switch tests open in any switch position other than Off, test the sunroof switch signal circuits for a short to voltage before replacing the switch.