Self-Diagnostics - Bosch 5.3

The EBTCM performs system self -diagnostics, and can detect and often isolate system malfunctions. When a malfunction is detected, the EBTCM sets a Diagnostic Trouble Code (DTC). The DTC represents the malfunction, turns on the ABS and/or TRAC OFF indicators (in almost all instances if equipped), and may disable the ABS/TCS functions as necessary for the duration of the ignition cycle.