P0563

Diagnostic Chart:

Wiring Diagram:

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 greater than 17 V.


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.


TEST DESCRIPTION

Number(s) below refer to the step number(s) on the Diagnostic Table.

1. The Powertrain OBD System Check prompts the technician to complete some basic checks and store the freeze frame and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the malfunction occurred. The information is then stored on the scan tool for later reference.

3. Replacement PCMs must be reprogrammed and the crankshaft position system variation procedure must be performed. Refer to the latest Techline information for PCM reprogramming and also refer to the Crankshaft Position (CKP) System Variation Learn Procedure for the Crankshaft Position System Variation Procedure.

5. If no malfunctions have been found at this point and no additional DTCs were set, refer to Diagnostic Aids for additional checks and information.