2010 Cadillac CTS Sedan AWD V6-3.6L Page 683
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (CTS) (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair/Brake Pressure Modulator Valve Replacement)Brake Pressure
Modulator Valve Replacement (CTS-V) (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic Control
Assembly - Antilock Brakes/Service and Repair/Brake Pressure Modulator Valve Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C0179
DTC C0179
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC C0179 54
- System Thermal Temperature High
Circuit/System Description
The electronic brake control module (EBCM) monitors traction control system (TCS) activation in order to calculate an estimate of the EBCM
solenoid valve temperatures. In most cases high solenoid valve temperatures are caused by extended TCS activation. If the EBCM calculates that
the solenoid valve temperatures are too high, the EBCM will temporarily suspend the TCS function until the solenoid valves cool.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 9 volts.
Conditions for Setting the DTC
The estimated solenoid coil temperature reaches 220掳C (428掳F).
Actions Taken when the DTC Sets
* The EBCM disables the traction control for the duration of the fault.
* A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
Most occurrences of this DTC are caused by excessive TCS activation or braking.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
