2010 Cadillac CTS Sedan AWD V6-3.6L Page 765

2010 Cadillac CTS Sedan AWD V6-3.6L Page 765

DTC Descriptors

DTC C0800 03

- Device Power 1 Circuit Voltage Below Threshold

DTC C0800 07

- Device Power 1 Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

The electronic parking brake control module (EPB) monitors the system voltage circuit to determine if the voltage is within the normal operating

range. When the EPB detects that the system voltage is below 9.2 V or above 16 V, the DTC C0800 sets.

Conditions for Running the DTC

* Ignition is ON.

* Engine ON.

Conditions for Setting the DTC

C0800 03

* The EPB detects that the system voltage is less than 9.2 V.

* The above condition is present for 7 seconds.

C0800 07

* The EPB detects that the system voltage is greater than 16 V.

* The above condition is present for 7 seconds.

Action Taken When the DTC Sets

The Driver Information Center (DIC)displays the SERVICE PARKING BRAKE message.

Conditions for Clearing the DTC

The system voltage returns to normal operating range.

Diagnostic Aids

* A high or low voltage DTC set in multiple modules indicates a concern in the charging system.

* A possible cause of this DTC could be overcharging with a battery charger or jump starting.

* A high or low voltage value in multiple modules indicates a concern in the charging system.

Reference Information

Schematic Reference

Park Brake System Schematics (See: Brakes and Traction Control/Parking Brake System/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification