Without RPO JL4
DTC C0279 (W/O JL4)
Circuit Description
The PCM sends engine/axle/tire IDs to the EBCM via serial data communications immediately after the modules are powered up.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0279 Powertrain Configuration Not Valid
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The EBCM receives invalid information from the PCM.
Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The EBCM disables the TCS.
^ The traction off indicator turns ON.
Conditions for Clearing the DTC
The conditions for setting the DTC are no longer present and you use the scan tool Clear DTC's function.
Diagnostic Aids
Diagnose other ABS or TCS related DTC's prior to diagnosing DTC C0279.
If multiple TCS related DTC's are set, or the vehicle being serviced is not equipped with TCS, verify the correct EBCM is installed in the vehicle.
Test Description
The number below refers to the step number on the diagnostic table.
3. The powertrain control module (PCM) must have the correct part number for the specified application.
