C1255

Circuit Description
This DTC identifies a malfunction within the EBCM.

Condition for Running the DTC
The ABS conditions and the braking conditions are normal.

Condition for Setting the DTC
An internal EBCM malfunction exists.

Action Taken When the DTC Sets
If equipped, the following actions occur:
- The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
- The ABS indicator turns ON.
- The TRACTION CONTROL indicator turns ON.
- The DIC displays the SERVICE STABILITY SYS message.
- For some DTC C1255xx, the EBCM disables the variable effort steering (YES) for the duration of the ignition cycle and the DTC displays the SERVICE STEERING SYS message.

Conditions for Clearing the DTC
- The condition for the DTC is no longer present (the DTC is not current) and you used the scan tool Clear DTC function.
- The condition for the DTC is no longer present (the DTC is not current) and you used the On-Board Diagnostics Clear DTC function.
- The EBCM automatically clears the history DTC when a current DTC is not detected in

Diagnostic Aids
- When the scan tool displays the DTC, 2 more numbers follow the DTC. Note the 2 numbers and any other DTCs. The 2 numbers with the DTC are an engineering aid in order to determine the cause of the internal malfunction.
- A DTC C1255e2 can be caused by a battery or module disconnect. Inspect for a recent battery disconnect or module connector disconnect before replacing the EBCM.
- A DTC C1255m5 can be set along with any wheel speed sensor DTC. Diagnose any wheel speed sensor DTCs before replacing the EBCM.
- Make sure integrity of the connection between the EBCM and BPMV is secure, tight, and free from corrosion.

Test Description
The number below refers to the step number on the diagnostic table.
2. This step determines whether the DTC is set current.