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
| • | The EBCM disables the TCS until the DTC becomes a history DTC. |
| • | The Traction Off indicator turns ON. |
| • | The ABS remains functional. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The electronic brake control module (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 | |
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. Did you complete the repair? | Go to Step 5 | Go to Step 4 |
4 | Reprogram the EBCM. Refer to Service Programming System (SPS). Did you complete the repair? | Go to Step 5 | -- |
5 |
Does the DTC reset? | Go to Step 2 | System OK |
