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Home >> Lincoln >> 2007 >> MKX AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnostic Tests >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test K: DTC C1093 - Traction Control Disable Switch Circuit Failure/The Stability/Traction Control Switch Indicator is Inoperative >> Normal Operation
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Normal Operation

The stability/traction assist system status is indicated by an indicator in the instrument cluster. The traction control switch is hard wired to the instrument cluster module. When the driver deactivates the traction assist system, the instrument cluster sends a message to the PCM and the ABS module over the high-speed controller area (HS-CAN) bus. The traction assist system will remain deactivated until the driver pushes the switch again or until the ignition switch is cycled.

The instrument cluster sends a 5-volt reference voltage to the stability/traction control switch along circuit CCA15 (YE/GY). When the switch is pressed, the reference voltage is momentarily grounded through the switch along circuit GD116 (BK/VT). A failure in either of these 2 circuits or the switch itself will cause DTC C1093 to set.

Possible Causes

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