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Home >> Ford >> 2007 >> Freestar Limited >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnostic Tests >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test L: DTC C1991 - Module Calibration Failure >> Normal Operation
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Normal Operation

The stability assist system needs to be recalibrated whenever a component specific to the system is disconnected or a new component is installed.

Possible Causes

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