P0563

Schematic:

CIRCUIT DESCRIPTION
The Powertrain Control Module (PCM) monitors the system voltage on the ignition feed terminals to the PCM. A system voltage DTC sets whenever the voltage is above a specified calibrated value.

CONDITIONS FOR SETTING THE DTC
The system voltage is more than 17.0 volts.

ACTION TAKEN WHEN THE DTC SETS
^ The PCM records the operating conditions at the time the diagnostic fails. The Failure Records buffers stores this information.
^ A history DTC is stored.

CONDITIONS FOR CLEARING THE DTC
^ A history DTC clears after 40 consecutive warm up cycles without a fault.
^ The scan tool can clear the DTC.

DIAGNOSTIC AIDS
^ Charging the battery with a battery charger and starting the engine can cause a DTC to set.
^ If the DTC sets when you operate an accessory, check for a poor connection or an excessive current draw.
^ Additional DTCs can set as the result of the PCM disabling the outputs.

Diagnostic Chart:

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
1. The Powertrain OBD System Check prompts you to complete some of the basic checks and to store the Freeze Frame and Failure Records data on the scan tool if applicable. This creates an electronic copy of the data captured when this DTC sets. The scan tool stores this data for later reference.
4. Reprogram the replacement PCM and perform the Crankshaft Position System Variation Learn Procedure. Refer to the latest Techline procedures for PCM reprogramming.
6. If no malfunctions are present at this point and no additional DTCs were set. Refer to Diagnostic Aids for additional checks and information.