Circuit Description

The Electronic Brake and Traction Control Module (EBTCM) controls the Pulse Width Modulated (PWM) signal on the desired torque circuit while monitoring wheel speed sensors to detect slippage. The PCM monitors the PWM signal and reduces engine torque as needed by retarding ignition timing, decreasing boost duty cycle, and increasing air/fuel ratio or, in severe cases, shutting off up to 3 fuel injectors. PCM sends a PWM signal to the EBTCM on the delivered torque circuit informing EBTCM of response made to the desired torque signal. A problem with the delivered torque circuit will set this DTC and Traction Control System (TCS) to be disabled. An ABS/TCS DTC may also be set. For further ABS/TCS DTC information, refer to appropriate ANTI-LOCK article in BRAKES.