Operation CHARM: Car repair manuals for everyone.

C1255





Circuit Description
This DTC identifies a malfunction within the EBCM.

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

Conditions 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 DRP/ABS/TCS/VSES for the duration of the ignition cycle.
^ The ABS indicator turns ON.
^ The TRACTION CONTROL indicator turns ON.
^ The red BRAKE warning 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 DIC 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 100 consecutive drive cycles.

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.
^ When the scan tool displays DTC C1255m3, the EBCM has not been programmed. Perform the setup procedure for the EBCM.

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