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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 870 (Brake System - General Information) >> Diagnostic Tests >> Brake System >> Pinpoint Tests >> Pinpoint Test A: Vibration When Brakes Are Applied >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

During moderate to heavy braking, noise from the hydraulic control unit (HCU) and pulsation in the brake pedal can be observed. Pedal pulsation coupled with noise during heavy braking or on loose gravel, bumps, or wet or snowy surfaces is acceptable and indicates correct functioning of the ABS system. Pedal pulsation alone or steering wheel nibble (frequency is proportional to the vehicle speed) indicates a concern with a brake or suspension component.

Possible Causes

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