Circuit/System Testing
- Verify DTC P0562 is set as current.
- If the DTC is history, refer to Charging System Test .
- Engine running, measure the voltage at the battery terminals and compare it with the Ignition 1 Signal parameter. The battery and Ignition 1 signal readings do not differ more than 2 volts.
- If greater than the specified value, test the Ignition 1 circuits X1 terminal 19, X2 terminal 13 and terminal 28 and ground circuits X2 terminal 73 and X3 terminal 73 for an open/high resistance.
- If the circuits test normal, replace the ECM.