Circuit/System Verification
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Engine running, accessories OFF, observe the scan tool hybrid powertrain control module ignition voltage parameter. The reading should be less than 15.5 V.
- If not within the specified value, or the Charge Indicator light is ON, go to DC Power Conversion Test .