Engine Only Traction Control (EOTC)

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

In order to achieve maximum traction, the Engine Only Traction Control (EOTC) system is designed to limit wheel spin by modulating engine torque when driving on slippery or loose surfaces. Engine torque modulation is achieved by regulating fuel and spark to the cylinders. This means that the traction control system is controlled by the PCM and not the ABS module. The only function of the ABS module in an EOTC system is to provide wheel speed information to the PCM along the HS-CAN. The PCM uses the wheel speed information to determine when traction control is needed.

The traction control system can be disabled by the stability/traction control switch which is part of the center stack switch assembly (the assembly contains the Passenger Air Bag Deactivation (PAD) indicator and the stability/traction control switch). The traction control system resets and returns to normal operation when the ignition switch is cycled or when the stability/traction control switch is pressed and released a second time during the same ignition cycle. When the traction control system is disabled the message center (if equipped) displays TRACTION CONTROL OFF.

The traction control system is contained in the PCM and is configured when the PCM is configured. Refer to Programmable Module Installation (PMI) in MODULE CONFIGURATION .

The brake pressure transducer (if equipped) is mounted on the bottom of the master cylinder near the rear and sends a variable voltage to the ABS module depending on the pressure applied to the brake pedal. The ABS module receives this information directly from the pressure transducer.