Circuit/System Verification
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Verify DTC C0899 is set as current.
- If DTC C0899 is set as history refer to Charging System Test
- Ignition OFF, measure the voltage at the battery terminals.
- Ignition ON, observe the scan tool EBCM Battery Positive Voltage parameter.
- Verify that battery terminal voltage and Battery Positive Voltage parameter readings do not differ by more than 2 volts.