Circuit/System Testing
WARNING: This page is about a different car, the 2010 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the EBCM.
- Connect a test lamp between the signal circuit terminal 16 and ground.
- Ignition ON, apply and release the brake pedal. The test lamp should turn ON and OFF as the brake pedal is applied and released.
- If the test lamp is always ON, test the signal circuit for a short to voltage.
- If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the EBCM.