2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2131
瀚慖f not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and Inspection/Component Tests
and General Diagnostics/Charging System Test).
2. If all circuits test normal, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning)for ECM replacement, setup, and programming.
FPCM
DTC P0563 (FPCM)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0563
- System Voltage High - FPCM
Diagnostic Fault Information
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.
Conditions for Setting the DTC
The FPCM detects that the system voltage is greater than 17.5 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
* A high voltage DTC in multiple modules indicates a concern in the charging system.
* This DTC could be set by overcharging with a battery charger or jump starting.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
