C0179

DTC C0179

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptor
DTC C0179
- System Thermal High

Circuit/System Description

The electronic brake control module (EBCM) monitors the duration and how many times antilock brakes or the traction control is activated to calculate an estimated temperature of the brake components to prevent overheating.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The EBCM detects the temperature of the brakes is too high.

Action Taken When the DTC Sets

* The EBCM disables the Antilock Brake System (ABS)/TCS/Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The EBCM calculates the brakes have cooled sufficiently.
* The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

DTC C0179 does not indicate a malfunction has occurred. This DTC indicates their was excessive ABS or Traction Control activation that could cause high temperatures.

Reference Information
Schematic Reference

Antilock Brake System Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

ABS Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information.

Circuit/System Verification

Verify that the DTC sets outside of the Conditions for Running and Setting. Since most occurrences of this DTC are caused by an excessive braking or Traction Control usage, review with the customer the conditions under which the DTC set.

If the DTC set within the Conditions for Running and Setting, the brake system is operating as designed.