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 00
- System Thermal Temperature High

Circuit/System Description

The electronic brake control module (EBCM) monitors traction control system activation in order to calculate an estimate of the EBCM solenoid valve temperatures. In most cases high solenoid valve temperatures are caused by traction control system extended activation. If the EBCM calculates that the solenoid valve temperatures are too high, the EBCM will temporarily suspend the traction control system function until the solenoid valves cool.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The EBCM detects the temperature of the solenoid valves is too high.

Action Taken When the DTC Sets

* The EBCM disables the traction control system/vehicle stability enhancement system.
* A driver information center 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. Most occurrences of this DTC are caused by excessive traction control activation or braking. This DTC indicates there was excessive ABS or traction control activation.

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 (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

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.