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 provide an overview of each diagnostic category. |
DTC Descriptors
DTC C0561 71: System Disabled Information Stored-Invalid Serial Data ReceivedCircuit/System Description
The electric parking brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. The electric parking brake control module also contains the logic for applying and releasing the parking brake when commanded by the electric parking brake switch. When the electric parking brake control module receives a signal from the switch the internal circuit board temperature is checked to verify it is within operating range before the control module performs the requested operation.
Conditions for Running the DTC
Ignition OFF, ACCESSORY, or RUN mode.
Conditions for Setting the DTC
The electric parking brake control module receives an invalid serial data message or does not receive a serial data message from another module.
Action Taken When the DTC Sets
| • | A message and/or a warning indicator may be displayed. |
| • | The electric parking brake functionality is degraded. |
Conditions for Clearing the DTC
| • | The electric parking brake control module clears the history DTC when a current DTC is not detected in 40 ignition cycles. |
| • | The electric parking brake receives Valid signals from other modules. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Electronic Parking Brake Control Module Description
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Using the scan tool, locate the Invalid parameter in the Data Display.
- Refer to the appropriate module to diagnose the invalid data signal. Do not replace the electric parking brake control module.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
