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Home >> Lincoln >> 2003 >> Town Car Protection Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 584 (Anti-Lock Control System) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test E: DTC C1145, DTC C1155, DTC C1165, DTC C1175 - Wheel Speed Sensor Input Circuit Failure >> 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 active wheel speed sensor generates a signal that is sent to the ABS module. The wheel speed sensor circuitry connects to the ABS module connector C155 through two wires and a connector at each wheel speed sensor. When the ignition is turned to the RUN position, the ABS module carries out a self-test by sending a reference voltage through the right front wheel speed sensor and its circuitry to determine if they are functional.

Voltage is supplied to the active wheel speed sensors from the ABS module. The wheel speed sensor ground is supplied by the ABS module.

Possible Causes 

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