Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the cruise control release switch.
- Ignition ON, test for B+ between the B+ circuit terminal 1 and ground.
- If less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
- Verify the scan tool TCC/Cruise Brake Pedal Switch parameter displays Released.
- If not the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the ECM.
- Install a 3A fused jumper wire between the signal circuit terminal 2 and the B+ circuit terminal 1. Verify the scan tool TCC/Cruise Brake Pedal Switch parameter displays Applied.
- If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
- If all circuits test normal, test or replace the cruise control release switch.