Circuit Description

The EBCM and the powertrain control module PCM or engine control module ECM simultaneously control the traction control. The EBCM sends a Requested Torque message via pulse width modulated (PWM) signal to the PCM or ECM to deliver. Normal values are between 10 and 90 percent duty cycle. The signal should be at least 90 percent when traction control is not active and at lower values during traction control activations. The PCM or ECM supplies the pull up voltage that the EBCM switches to ground to create the signal.