Circuit Description
The EBCM must be programmed with one of four selectable trim levels when a new EBCM is installed in the vehicle. A scan tool must be used to perform this function.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The EBCM has not been programmed with a valid trim level.
Action Taken When the DTC Sets
| • | The EBCM disables the ABS. |
| • | The ABS indicator turns ON. |
Conditions for Clearing the DTC
The conditions for setting the DTC are no longer present and you use the scan tool Clear DTCs function.
Diagnostic Aids
Replace the EBCM if DTC C0279 continues to set intermittently.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the ABS Diagnostic System Check? | Go to Step 2 | |
2 |
Does the DTC set? | Go to Step 3 | Go to Diagnostics Aids |
3 | Use the scan tool in order to verify the trim level and tire size calibrations of the EBCM are valid and correspond with the vehicle specified. Use the scan tool in order to perform the Tire Size Calibration procedure and/or the Trim Level Calibration procedure, if necessary. Did you find and correct the condition? | Go to Step 5 | Go to Step 4 |
4 |
Important: Following EBCM replacement, use the scan tool to perform the Tire Size Calibration procedure and the Trim Level Calibration procedure. Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Did you complete the replacement? | Go to Step 5 | -- |
5 |
Does the DTC reset? | Go to Step 3 | System OK |
