TRAC Indicator

The trac indicator is controlled by either of the following components:
^ The electronic brake control module (EBCM)
^ The instrument cluster

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster in order to turn on the trac indicator. The EBCM turns on the indicator under one of the following conditions:
^ The anti-lock brake system is active.
^ The traction control system is active.
^ The 3 second bulb test is occurring.