Circuit/System Verification
WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
- Verify DTC C0899 is set as current.
- Engine running measure and record the voltage at the battery terminals.
- Verify that the battery voltage is 12.6-15.5 volts.
- → If the battery voltage is not within the specified range, refer to Charging System Test
- Observe the scan tool EBCM battery positive voltage parameter.
- The battery terminal and EBCM parameter should not differ by more than 2 volts.