Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The traction control portion of the AdvanceTrac® can be disabled by pressing the traction control switch located on the instrument panel center finish panel. When the system is disabled, the sliding car OFF icon in the Instrument Panel Cluster (IPC) will illuminate solidly. On MKZ vehicles, the traction control switch is part of the Front Controls Interface Module (FCIM). On Fusion and Milan vehicles, the traction control switch is part of the ambient lighting switch.

The IPC sends 5 volts to the traction control switch along circuit CCA15 (YE/GY). When the traction control switch is pressed, this voltage is sent through the switch and to ground along circuit GD116 (BK/VT). When the IPC detects this ground, it sends a message to the PCM and the ABS module along the High Speed Controller Area Network (HS-CAN) bus that the driver has disabled the system. An open circuit or a defective traction control switch will prevent the system from being disabled, but will not set a DTC.

DTC C0089:11 (TCS Disable Switch: Circuit Short to Ground) - If the IPC detects the ground signal during the on-demand self test or if circuit CCA15 (YE/GY) is shorted to ground, DTC C0089:11 will be set. Also, if the traction control switch is held or stuck closed for more than 2 minutes during normal operation, DTC C0089:11 will be set.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Traction control switch
IPC