2010 Cadillac CTS Sedan AWD V6-3.0L Page 1486
The following control modules monitor the system voltage to ensure that the voltage stays within the proper range:
* Engine control module
* Fuel pump control module
* Transmission control module
Damage to components, and incorrect data may occur when the voltage is out of range.
Conditions for Running the DTC
Engine Control Module
* The vehicle speed is above 8 km/h (5 mph).
* The system voltage is between 9.5-18 V.
Fuel Pump Control Module
The ignition is ON.
Transmission Control Module
The system voltage is between 8.6-18.0 V.
Conditions for Setting the DTC
Engine Control Module
The engine control module detects a system voltage above 16 V for less than 1 second.
Fuel Pump Control Module or Transmission Control Module
The module detects the system voltage is greater than 18 V.
Action Taken When the DTC Sets
DTC P0563 is a C type DTC.
Conditions for Clearing the DTC
DTC P0563 is a C type DTC.
Diagnostic Aids
* A possible cause of this DTC could be overcharging with a battery charger or jump starting.
* A high voltage value in multiple modules indicates a concern in the charging system.
Reference Information
Schematic Reference
* Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)for the LSA engine
* Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls
Schematics (LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)for the LF1 and LLT engine
* Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)for the MH2
and MH4 transmission
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
