Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P0563: System Voltage HighCircuit/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
Connector End View Reference
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References 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. |
Circuit/System Testing
- Engine ON, the scan tool Control Module Voltage parameter should display less than 14.5 volts.
- Inspect for an external condition that may have caused a high -12 V circuit condition such as a battery charger.
| ⇒ | 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. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for PIM replacement, programming, and setup.
