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Home >> Lincoln >> 2004 >> Town Car Protection Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 344 (Anti-Lock Control System) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test F: DTC C1233, DTC C1234, DTC C1235, DTC C1236 - Wheel Speed Sensor Input Signal Missing >> Normal Operation
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Normal Operation

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

The wheel speed sensor and sensor ring generate a signal to the ABS module that is proportional to the wheel speed. The ABS module compares the wheel speed inputs from all wheel speed sensors to determine an impending wheel lockup.

Possible Causes