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Home >> Acura >> 1998 >> Integra GS-R, 2D Coupe >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes & Drum Brakes >> Testing >> Power Brake Unit >> Functional Test

Functional Test

  1. Turn ignition off. Press brake pedal several times. Press and hold pedal firmly for 15 seconds. If pedal sinks, master cylinder, brakeline, or caliper piston is faulty.
  2. Start engine with pedal pressed. If pedal sinks slightly, vacuum unit is working properly. If pedal height does not change, booster or check valve is faulty.
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