P1B05 and P1B06
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition voltage is 8-18 volts.
- Wake up signal is active.
- BECM is supplying current on HVIC circuit. This normally occurs when HV contactor relays are closed.