Circuit/System Verification
- Engine running, measure and record the voltage at the C1 battery terminals.
- Verify that the battery voltage is 12.6-15.0 V.
- If the battery voltage is not within the specified range, refer to Charging System Test .
- Observe the appropriate module scan tool Battery Voltage parameters. Verify that the scan tool displays a value that is within 2 V of the C1 battery terminal voltage.