Without RPO JL4

DTC C0290 or C0292 (W/O JL4)

Test 1:

Circuit Description
The Powertrain Control Module (PCM) sends a state of health message to the EBCM within 5.5 seconds after the modules are powered up. This message is sent via serial data communications.

Conditions for Running the DTC The ignition is ON.

Conditions for Setting the DTC
The EBCM fails to receive serial data 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 DTCs function.