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 steering wheel controls switch-left.
- Ignition ON, test for B+ between the B+ circuit terminal 8 and ground.
- If less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
- Test for B+ between the B+ circuit terminal 8 and the signal circuit terminal 6.
- If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
- Ignition OFF, disconnect the X1 harness connector at the BCM.
- Test for infinite resistance between the signal circuit terminal 6 and ground.
- If less than the specified value, test the signal circuit for a short to ground.
- If all circuits test normal, test or replace the steering wheel control switch-left.