C1278

CIRCUIT DESCRIPTION
The Powertrain Control Module (PCM) monitors various parameters and will not allow Traction Control/Active Handling (if equipped with RPO JL4) operation if any parameter falls beyond a predetermined value.

CONDITIONS FOR SETTING THE DTC
A malfunction has been detected by the Powertrain Control Module (PCM). The PCM then causes TCS/Active Handling shutdown until the malfunction has been corrected.

ACTION TAKEN WHEN THE DTC SETS
This is a temporary operational malfunction.
TCS/Active Handling (if equipped with RPO JL4) are disabled.
^ Indicators that turn on:
- Car Icon (TCS indicator)
^ Messages displayed on the Driver Information Center (DIC):
- Service Traction System
- Service Active HNDLG (if equipped with RPO JL4)

CONDITIONS FOR CLEARING THE DTC
^ Condition for Diagnostic Trouble Code (DTC) is no longer present and Scan tool clear DTC function is used.
^ Fifty ignition cycles have passed with no DTCs detected.

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





DTC C1278 TCS TEMPORARILY INHIBITED BY PCM