C0551

DTC C0551

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 Descriptors
DTC C0551 45
- Option Configuration Error/Variant Not Programmed

DTC C0551 47
- Option Configuration Error/VIN Not Programmed

Circuit/System Description

When the electronic brake control module (EBCM) is replaced, software and calibrations are flash programmed into the EBCM.

Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC

C0551 45

The option configuration has not been programmed into the EBCM.

C0551 47

The incorrect EBCM has been installed in the vehicle.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The antilock brake system (ABS)/Engine Traction System (ETS) are disabled.
* The ABS/ETS indicators illuminate.

Conditions for Clearing the DTC

The correct calibration must be programmed into the EBCM.

Diagnostic Aids

If the DTC was set after EBCM replacement, verify that the replacement EBCM and software are correct for the vehicle.

Reference Information
Schematic Reference

Antilock Brake System Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
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 DTC C0551 programming is not set.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

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