Engine Electrical

DTC P0563

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 - ECM

Diagnostic Fault Information





Circuit/System Description

The engine control module (ECM) monitors the battery positive (B+) 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 ECM detects high battery voltage, then DTC P0563 will set.

Conditions for Running the DTC

* The engine has been running for 3 minutes.
* The vehicle speed is greater than 5 km/h (3.1 mph)

Conditions for Setting the DTC

The ECM detects battery voltage greater than 18.1 volts for 2 seconds.

Action Taken When the DTC Sets

DTC P0560 is a type C DTC.

Conditions for Clearing the DTC

DTC P0560 is a type C DTC.

Diagnostic Aids

* This DTC could be set by overcharging with a battery charger or jump starting.
* A high voltage DTC in multiple modules indicates a concern in the charging system.

Reference Information
Schematic Reference

* Engine Controls Schematics (Electrical Diagrams) for the 3.4L (LNJ) engine
* Engine Controls Schematics (Electrical Diagrams) for the 3.6L (LY7) engine

Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Charging System Description and Operation (Description and Operation)
DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
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)

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 volts.

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

2. If all circuits test normal, replace the ECM.

Repair Instructions

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

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