Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- BCM senses an open or short to voltage on the off/run/crank voltage circuit when both ignition accessory/run and ignition run/crank parameters are active.
- BCM senses an open on the battery positive voltage circuit (to the ignition switch) while engine is running. An open on the battery voltage circuit can be caused by a short to ground on any of the following circuits:
- Battery positive voltage
- Accessory voltage
- Run/crank ignition 1 voltage
- Off/run/crank voltage