Circuit Description
When the electronic brake control module (EBCM) is replaced, software and calibrations are flash programmed into the EBCM. The EBCM receives the vehicle powertrain options information from the powertrain control module (PCM) in order for the EBCM to automatically calibrate to the vehicle.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0551 Option Configuration Error
Conditions for Running the DTC
| • | The ignition is ON. |
| • | Ignition voltage is greater than 8 volts. |
Conditions for Setting the DTC
One or more of the following conditions are present:
| • | The incorrect EBCM is installed on the vehicle. |
| • | The incorrect software or calibrations have been flash programmed into the EBCM. |
Action Taken When the DTC Sets
If equipped, the following actions occur:
| • | The engine drag control (EDC) / traction control system (TCS) are disabled. |
| • | The TCS indicator turns ON. |
The driver information center (DIC) displays the Service Traction System message.
Conditions for Clearing the 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. |
Diagnostic Aids
If the DTC was set after EBCM replacement, verify that the replacement EBCM and software are correct for the vehicle.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Is the electronic brake control module (EBCM) the correct module for the vehicle? | Go to Step 4 | Go to Step 3 |
3 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the repair? | Go to Step 5 | Go to Step 4 |
4 | Reprogram the EBCM. Refer to Service Programming System (SPS) in Programming and Setup. Did you complete the repair? | Go to Step 5 | -- |
5 |
Does the DTC reset? | Go to Step 2 | System OK |
