C0268

DTC C0267 or C0268 and C067 or C068

Diagnostic Instructions

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

DTC Descriptor
DTC C0268
- Class 2 Data Error Reported

Circuit/System Description

The electronic brake control module (EBCM) disables the traction control when other electronic control modules set DTCs for components that affect the operation of the traction control system.

Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC

The PCM or BCM diagnoses a condition preventing the engine control portion of the traction control function and sends a serial data message to the EBCM indicating that torque reduction is not allowed. The PCM or BCM and transmission will typically set a DTC and the EBCM will set this DTC.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The EBCM disables the Antilock Brake System (ABS)/Traction Control System (TCS)/Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
* DRP may be disabled and the Brake Warning indicator may turn ON.
* Stability Caution indicator turns ON.
* DIC displays the SERVICE STAB SYS message.
* DIC displays the TRACTION FAILED message.

Conditions for Clearing the MIL/DTC

* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Reference Information
Schematic Reference

Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference
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

Circuit/System Verification

Verity that no DTCs are set in the BCM, and PCM or transmission. If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code Descriptions)

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for EBCM replacement, setup, and programming