Engine Electrical (FPCM)

DTC P0563 (FPCM)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptor
DTC P0563
- System Voltage High - FPCM

Diagnostic Fault Information





Typical Scan Tool Data





Circuit/System Description

The fuel pump control module (FPCM) monitors the system voltage to ensure that the voltage stays within the proper range. Damage to components, and incorrect data may occur when the voltage is out of range. If the FPCM detects that the system voltage is high, DTC P0563 sets.

Conditions for Running the DTC

* The ignition is ON.
* The system voltage is between 9.5-18 V.

Conditions for Setting the DTC

The FPCM detects that the system voltage is greater than 16 V.

Action Taken When the DTC Sets

DTC P0563 is a type C DTC.

Conditions for Clearing the DTC

DTC P0563 is a type C DTC.

Diagnostic Aids

* Some possible causes of this DTC are overcharging with a battery charger and jump starting.
* A high voltage value in multiple modules indicates a concern in the charging system.

Reference Information
Schematic Reference

Starting and Charging Schematics (Starting and Charging Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Charging System Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 V.

• If not within the specified range, refer to Charging System Test (Charging System Test).

2. Observe the scan tool FPCM Ignition 1 Signal parameter. The reading should be between 12.6 and 15.0 V.

• If greater than the specified range, replace the FPCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for FPCM replacement, setup, and programming.