C0276

DTC C0276

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.



DTC Descriptor
DTC C0276
- Transmission Control Module (TCM) Traction Control Not Allowed




Circuit/System Description

The electronic brake control module (EBCM) may inhibit the Traction Control System (TCS) if a failure occurs with the locking differential or the transfer case.


Conditions for Running the DTC

The ignition is ON.


Conditions for Setting the DTC

* The transfer case selected range has been reported as invalid by the transfercase control module (TCCM).
* The rear differential status has been reported as locked by the TCCM when the vehicle speed is greater than 50 km/h (31 mph) for 10 seconds.



Action Taken When the DTC Sets

* The EBCM disables the TCS and Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
* The driver information center (DIC) displays the SERVICE TRACTION message.
* The DIC displays the SERVICE STAB SYS message.



Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* Using a scan tool, clear the DTC function.



Diagnostic Aids

Check the TCCM for DTCs.