Circuit/System Verification
With the scan tool installed, engine running, observe the Ignition 1 signal parameter in the ECM data list. The ignition 1 signal parameter should read between 11.5 volts - 15.5 volts.
With the scan tool installed, engine running, observe the Ignition 1 signal parameter in the ECM data list. The ignition 1 signal parameter should read between 11.5 volts - 15.5 volts.