2010 Cadillac CTS Sedan AWD V6-3.0L Page 1486

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)