Circuit/System Verification
- 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 (Solstice) or Charging System Test (SKY) .
- Engine running, observe the scan tool ECM Ignition 1 signal parameter. The voltage should be between 12.5 and 15.5 volts.
- If greater than specified value, replace the ECM.