The PCM monitors various parameters and will not allow traction control operation if any parameter falls below a specified value.
The PCM detects a malfunction and then causes TCS shut down until the malfunction has been corrected
• | A DTC C1278 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 indicator will be turned off but the DTC will be stored |
• | The condition for the DTC is no longer present and the scan tool clear DTC function is used |
• | 50 ignition cycles have passed with no DTCs detected |
This code is for information only. As an aid to the technician, this code indicates that there are no problems in the ABS/TCS system
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | Go to Diagnostic System Check | |
2 |
Are any other DTCs set? | -- | Go to Diagnostic Trouble Code (DTC) List for Appropriate DTC Table | |
3 | Is DTC C1278 set as a current code? | -- | ||
Did DTC C1278 set in the last three drive cycles? | -- | Go to Diagnostic System Check | ||
5 | Perform the Powertrain OBD System Check. Refer to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L. Did the vehicle pass the OBD System Check? | -- | Go to Diagnostic Aids | Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L |