C1278

CIRCUIT DESCRIPTION
The PCM monitors various parameters and will not allow traction control operation if any parameter falls outside a specified range.

CONDITIONS FOR SETTING THE DTC
The PCM detects a malfunction and causes TCS shut down until the malfunction has been corrected.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction DTC is stored (This is a temporary malfunction).
^ The TCS is disabled.
^ The TRACTION OFF indicator is turned ON.
^ If the TCS is no longer inhibited, the TRACTION OFF indicator is turned OFF, but the DTC will be stored as history.

CONDITIONS FOR CLEARING THE DTC
^ The condition for the DTC: is no longer present and you used the scan tool Clear DTC function.
^ The EBCM/EBTCM does not detect the DTC in 50 drive cycles.

DIAGNOSTIC AIDS
This DTC is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS system.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
4. This step checks if DTC C1278 resets.