Traction Control Indicator Lamp: Description and Operation
Traction Control System indicatorTRAC OFF
The IPC illuminates the TRAC OFF indicator when any of the following occur:
^ The Electronic Brake Control Module (EBCM) inhibits the traction control system due to a malfunction in the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination. The IPC sends a class 2 message to the BCM in order to activate an audible warning.
^ The EBCM detects that the traction control switch is pressed. The IPC receives a class 2 message from the EBCM indicating the switch status.
^ The IPC receives a class 2 message from the EBCM requesting illumination of the ABS indicator.
^ The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 5 seconds.
TRACTION CONTROL SYSTEM ACTIVE - 91
The IPC illuminates the TRACTION CONTROL SYSTEM ACTIVE - 91 message in the DTC when the Electronic Brake Control Module (EBCM) detects that the traction control system is active. The IPC receives a class 2 message from the EBCM requesting illumination.