Chevrolet Trax: DTC C027C: Front brake discs high temperature
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 provides an overview of each diagnostic category.
DTC Descriptor
DTC C027C
Front Brake Discs High Temperature
For symptom byte information refer to Symptom Byte List .
Circuit/System Description
The electronic brake control module monitors how often the traction control or the stability control system activates in order to calculate an estimate of the front brake discs temperature. In most cases the high temperatures are caused by extended traction control activation. If the electronic brake control module calculates that the front brake components temperatures are too high, the electronic brake control module will temporarily suspend the traction control system function until the front brake discs cool down.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The electronic brake control module detects the calculated temperature of the brake components is higher than 500ºC (932ºF).
Action Taken When the DTC Sets
- The traction/stability control indicator turns ON.
- The electronic brake control module disables the traction control and stability control for the duration of the ignition cycle.
Conditions for Clearing the DTC
- The condition for setting the DTC is no longer present.
- The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Diagnostic Aids
DTC C027C does not indicate a malfunction has occurred. This DTC indicates there was excessive traction control or stability control activation that caused the high temperatures.
Reference Information
Schematic Reference
Antilock Brake System Schematics (Encore), Antilock Brake System Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - (Trax)
Description and Operation
ABS Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
NOTE: Since most occurrences of this DTC are caused by excessive brake usage, review with the customer the conditions under which the DTC set.
- Allow the brakes to cool down before performing test.
- Verify that no other DTCs are set.
If any other DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
If no other DTCs are set
- Verify DTC C027C does not set while driving the vehicle under normal braking conditions. Refer to Brake System Vehicle Road Test
If the DTC sets
Replace the K17 Electronic Brake Control Module.
If the DTC does not set
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for electronic brake control module replacement, programming, and setup
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