Hybrid Controls

DTC P0563

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (with HP2) (Initial Inspection and Diagnostic Overview)Diagnostic System Check - Vehicle (without HP2) (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

Circuit/System Description

The hybrid powertrain control module (HPCM) continuously monitors the system voltage on the Ignition voltage circuits. The HPCM is located within the drive motor generator power inverter module (PIM) assembly and is not serviced separately. Higher than normal voltage may cause the control module or sensors to operate improperly.

Conditions for Running the DTC

Ignition is in RUN/CRANK.

Conditions for Setting the DTC

The HPCM detects system voltage is 18 volts or greater for 5 out of 6 seconds.

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

* Observe the driver information center (DIC) messaging that would indicate the electrical system requires service.
* A battery charger may have set this DTC.

Reference Information
Schematic Reference

Hybrid Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
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

Engine ON, measure and record the battery voltage with a DMM. The battery voltage should be less than 14.5 volts.

If the voltage is not less than the specified value, or the Charge Indicator light is ON, go to DC Power Conversion Test (DC Power Conversion Test).

Circuit/System Testing

1. Engine ON, the scan tool Control Module Voltage parameter should display less than 14.5 volts.

• If the voltage is not less than the specified value, test the Ignition Voltage circuit for a short to a voltage source greater than the specified value.
• If the voltage is within the specified range, replace the PIM.

2. Inspect for an external condition that may have caused a high -12 V circuit condition such as a battery charger.

Repair Instructions

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

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