Antilock Brakes / Traction Control Systems

DTC C0550

DTC Descriptor
DTC C0550
- Electronic Control Unit (ECU) Performance

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

The electronic brake control module (EBCM) detects an internal malfunction.

Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC

An internal EBCM malfunction exists.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The Antilock Brake System (ABS)/adaptive cruise control (ACC)/dynamic rear proportion (DRP)/engine drag control (EDC)/ Vehicle Stability Enhancement System (VSES) are disabled.
* TCS is degraded.
* The ABS/TCS indicators turn ON.
* The red BRAKE Warning indicator turns ON.

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.

Circuit/System Verification

DTC C0550 will set as result of internal EBCM circuit failure.

Replace the EBCM.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References - Electronic Brake Control Module