C1278

DTC C1278 Schematic:

CIRCUIT DESCRIPTION
The PCM monitors various parameters and will not allow Traction Control operation if any parameter falls beyond a predetermined value.

CONDITIONS FOR SETTING THE DTC
A malfunction has been detected by the PCM. The PCM then causes TCS shutdown until the malfunction has been corrected.

ACTION TAKEN WHEN THE DTC SETS
This is a temporary operational malfunction. A malfunction DTC is stored, TCS is disabled and the Traction Control indicator is turned ON. ABS remains functional. If TCS is no longer inhibited the indicator will be turned OFF but the DTC will still be stored.

CONDITIONS FOR CLEARING THE DTC
- Condition for DTC is no longer present and scan tool clear DTC function is used.
- Fifty ignition cycles have passed with no DTC(s) detected.

DTC C1278 TCS Temporarily Inhibited By PCM:

DIAGNOSTIC AIDS
This code is for information only. it indicates there are no problems in the ABS/TCS system, is used as an aid to the technician.