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Symptom: P0563-CHARGING SYSTEM VOLTAGE TOO HIGH When Monitored and Set Condition: P0563-CHARGING SYSTEM VOLTAGE TOO HIGH When Monitored: With the engine running for more than 30 seconds. Set Condition: When battery voltage is greater than 1 volt over target voltage for more than 5 seconds. POSSIBLE CAUSES TARGET VOLTAGE DIFFERS FROM BATTERY VOLTAGE INTERMITTENT CONDITION GENERATOR FIELD DRIVER CIRCUIT SHORTED TO GROUND GENERATOR FIELD POWERTRAIN CONTROL MODULE TEST ACTION APPLICABILITY 1 Note: Battery must be fully charged. t, actuate the Generator Field Driver. With a 12-volt test light connected to ground, backprobe the Generator Field Driver All Yes → Go To 2 No → Go To 5 2 With DRBIII t, stop all actuation. Turn the ignition on. t, read the Target Charging voltage. Is the Target Charging voltage above 13 volts? All Yes → Go To 3 No → Go To 4 3 Start the engine. t, manually set the engine speed to 1600 RPM. With DRBIII t, read both the Battery voltage and the Target Charging voltage. Compare the Target Charging Voltage to the Battery Voltage reading. All Yes → Replace the Powertrain Control Module in accordance with the Service Information. No → Go To 4 150 DRIVEABILITY - 1.6L GAS |