Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the driver door lock switch.
- Ignition ON, verify the scan tool Door Unlock Sw parameter is Inactive.
- If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the BCM.
- With YE9 driver door lock switch terminal D
- Without YE9 driver door lock switch terminal E
- If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the BCM.
- Install a 3A fused jumper wire between the signal circuit terminal listed below and ground. Verify the scan tool Door Unlock Sw parameter is Active.
- With YE9 driver door lock switch terminal D
- Without YE9 driver door lock switch terminal E
- 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 BCM.
- If all circuits test normal, test or replace the driver door lock switch.