FixVault

Typical Scan Tool Data

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Battery Voltage Signal - EBCM

Circuit Short to Ground Open Short to Voltage
Operating Conditions:  Ignition ON, Engine OFF.
Parameter Normal Value:  12.60 V.
B+ 0.00 V* 0.00 V* -
*The scan tool will not communicate with the EBCM if the battery voltage is less than 7 V.