Circuit/System Testing
WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the traction control switch.
- Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 10 Ω between the ground circuit terminal D and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, verify the scan tool Traction Control Switch parameter is Inactive.
- If not the specified value, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the instrument panel module (IPM).
- Install a 3 A fused jumper wire between the signal circuit terminal C and the ground circuit terminal D. Verify the scan tool Traction Control Switch parameter is Active.
- 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 instrument panel module (IPM).
- If all circuits test normal, test or replace the traction control switch.