Component Testing
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Sunroof Switch
- Ignition OFF, disconnect the harness connector at the sunroof switch.
- Test for infinite resistance between the following control circuits and the ignition circuit terminal E.
- Ground circuit terminal A
- Control circuit terminal B
- Control circuit terminal C
- Control circuit terminal D
- If less than the specified range, replace the sunroof switch.
- Test for infinite resistance between the following control circuits and the ground circuit terminal A.
- Control circuit terminal B
- Control circuit terminal C
- Control circuit terminal D
- Ignition circuit terminal E
- If less than the specified range, replace the sunroof switch.
- While holding the sunroof switch button to OPEN, test for less than 1 ohms between the following circuits.
- Control circuit terminal C and ground circuit terminal A
- Control circuit terminal D and the ignition circuit terminal E
- If greater than the specified range, replace the sunroof switch.
- While holding the sunroof switch button to VENT, test for less than 1 ohms between the following circuits.
- Control circuit terminal D and the ignition circuit terminal E
- Control circuit terminal C and control circuit terminal B
- If greater than the specified range, replace the sunroof switch.
- While holding the sunroof switch button to CLOSE, test for less than 1 ohms between the following circuits.
- Control circuit terminal D and ground circuit terminal A
- Control circuit terminal C and the ignition circuit terminal E
- If greater than the specified range, replace the sunroof switch.
IMPORTANT:
When performing the following tests, make sure that the sunroof is not at its end of travel position by switching the jumper wires to the other control circuits if the sunroof did not move in one direction.
Sunroof Motor
- Ignition OFF, disconnect the harness connector at the sunroof motor.
- Install a 15-amp fused jumper wire between the control terminal C and 12 volts. Momentarily install a jumper wire between the control terminal D and ground. The sunroof should OPEN or CLOSE.
- If the function does not perform as specified, replace the sunroof motor.
- Reverse the jumper wires. The sunroof motor should go in the opposite direction as step 2.
- If the function does not perform as specified, replace the sunroof motor.