Engine Only Traction Control (EOTC)

WARNING: This page is about a different variant/trim than selected.

Some vehicles may be equipped with an Engine Only Traction Control (EOTC) system. In order to achieve maximum traction, the 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 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 bus. The PCM uses the wheel speed information to determine when traction control is needed. The stability/traction control indicator "sliding-car icon" in the Instrument Panel Cluster (IPC) flashes during a traction control event and illuminates without flashing if the system is inoperative due to DTCs present in the ABS module. The stability/traction control indicator "sliding car OFF icon" is used to alert the driver that the traction control portion of the AdvanceTrac® system has been disabled by the driver. This icon illuminates continuously and does not flash.

The EOTC system can be switched off by pressing the traction control switch. Traction control system status is indicated by the sliding-car icon in the IPC being illuminated steadily. The system resets and returns to normal operation when the ignition switch is cycled or when the traction control switch is pressed and released a second time during the same ignition cycle.

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

When the EOTC system activates, either of the following can occur:

A small deceleration or a reduction in the acceleration of the vehicle
The sliding-car icon in the IPC flashes