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Home >> Ford >> 2011 >> Crown Victoria Police Interceptor, 4.6 W >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - Vehicle Dynamic Systems >> Diagnosis And Testing >> Anti-Lock Control >> Principles of Operation >> Stability/Traction Control Switch

Stability/Traction Control Switch

Unlike the standard anti-lock control system the EOTC  system can be deactivated by the driver through the stability/traction control switch. The switch is hard wired to the PCM and when pressed sends a ground signal to the module. The PCM then sends a message over the HS-CAN  bus to the IC  indicating that the driver has requested that the system be deactivated. When the IC  receives this message it illuminates the stability/traction control indicator "sliding-car icon" and sends a message to the Lighting Control Module (LCM) along the Standard Corporate Protocol (SCP) network. Once the LCM  has received the message, it illuminates the LED in the stability/traction control switch. The PCM will ignore any traction control events until the driver presses the switch again or the ignition key is cycled.