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Home >> Acura >> 1993 >> Integra GS-R >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc >> Testing >> Power Brake Unit >> Functional Test
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Functional Test

  1. Start engine. Turn ignition off. Press brake pedal several times. Press and hold pedal firmly for 15 seconds. If pedal sinks, master cylinder, brake line, 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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