Circuit/System Testing
- Verify DTC P0560 is set as current.
- If the DTC is history, refer to CHARGING SYSTEM TEST .
- Measure the voltage at the battery terminals and compare it with the scan tool ECM Ignition 1 signal parameter. Verify that the battery and Ignition 1 signal readings do not differ by more than 2.0 volts.
- If greater than specified value, test the ignition 1 circuits X2 terminal 5, X2 terminal 54 and ground circuits X2 terminal 1, X2 terminal 2 and X2 terminal 4 for an open/high resistance.
- If all circuits test normal, replace the ECM.