The TCS Off indicator (with traction control only)

^ The Electronic Brake Control Module (EBCM)
^ The instrument cluster

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the TCS off indicator. The EBCM turns on the indicator under any of the following conditions:
^ The traction control system is off.
^ The traction control system has failed.
^ Class 2 communication has been lost between the instrument cluster and the EBCM.
^ The 3 second bulb test is occurring.

The instrument cluster turns the TCS indicator on for approximately 3 seconds at bulb test.