Circuit/System Testing
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Because of the accessibility of the sunroof switch, perform the component testing before beginning the Circuit/System Testing.
- Ignition OFF, disconnect the harness connector at the S72 sunroof switch.
- Test for less than 10 Ω between the ground circuit terminal 1 and ground.
- If greater than the specified value, test the ground circuit for an open/high resistance.
- Ignition ON, verify the scan tool sunroof slide switch is short to battery.
- If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K61 sunroof control module.
- Install a 5 A fused jumper wire between the signal circuit terminal 4 and the ground circuit terminal 1. Verify the scan tool sunroof slide switch is short to ground.
- If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K61 sunroof control module.
- If all circuits test normal, test or replace the S72 sunroof switch.