Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF, disconnect the harness connector at the button assembly.
Doors closed, courtesy lamps OFF, test for less than 5 ohms between the ground circuit terminal E and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, command the green LED OFF with a scan tool. Test for less than 1 volt between the control circuit terminal F and ground.
- If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the CIM.
Command the green LED ON with a scan tool. Test for greater than 9 volts between the control circuit terminal F and ground.
- If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the CIM.
Command the red LED OFF with a scan tool. Test for less than 1 volt between the control circuit terminal G and ground.
- If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the CIM.
Command the red LED ON with a scan tool. Test for greater than 9 volts between the control circuit terminal G and ground.
- If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the CIM.
If all circuits test normal, replace the button assembly.