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Step
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Action
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Yes
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No
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DEFINITION: Fluctuation or pulsation is felt through the brake pedal, steering wheel, seat, floor, and/or in the vehicle ONLY when braking.
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1
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Were you sent here from the Hydraulic Brake Symptom table?
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Go to
Step 2
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Go to
Diagnostic Starting Point - Vehicle
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2
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1.
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Inspect the disc brake system for the following conditions.
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Excessive thickness variation of rotor friction surfaces
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Excessive assembled lateral runout (LRO) of rotor friction surfaces
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Hard spots, heat checks, bluing discoloration of rotor friction surfaces; possibly due to brake drag
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Excessive corrosion of rotor friction surfaces; including red, gray or black oxidation
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Loose, damaged or missing caliper or lining hardware
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Bent or damaged caliper or mounting component
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Excessive LRO of wheel hub/axle flange; due to damage and/or loose or excessively worn bearings
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Did you find and correct a condition?
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Go to
Step 3
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Go to
Diagnostic Starting Point - Vehicle
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3
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1.
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Install or connect components that were removed or disconnected during diagnosis.
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Is the condition still present?
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Go to
Step 2
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System OK
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