TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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BAT/Brakes, ABS & TRAC Systems5 / 167
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TROUBLESHOOTING — MK4 Supra Brakes, ABS & TRAC Systems, page 5
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BR–5 BRAKE SYSTEM – TROUBLESHOOTING TROUBLESHOOTING Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts. See page Part Name Trouble Brake system (fluid leaks) Brake system (Air in) Brake pad (Worn) Piston seal (Worn or damaged) Brake pedal (freeplay minimal) Master cylinder (Faulty) Parking brake (Shoe clearance out of adjustment) Parking brake (Lever travel out of Adjustment) Parking brake wire (Sticking) Booster push rod (Out of adjustment) Tension or return spring (Faulty) Pad (Cracked or distorted) Pad (Only) Piston (Stuck) Piston (Frozen) Booster system (Vacuum leaks) Pad support plate (Loose) Installation bolt (Loose) Sliding pin (Worn) Disc (Scored) Pad (Dirty) Pad (Glazed) Anti–squeal shim (Damaged) Hold–down spring (Damaged) See page references (rotated text along top): BR-17,22,26,31 BR-17,22,26,31 BR-6 BR-17,22,26,31 BR-11 BR-39 BR-10 BR-16 BR-35 BR-17,22,26,31 BR-17,22,26,31 BR-17,22,26,31 BR-7 BR-17,22,26,31 BR-17,22,26,31 BR-17,22,26,31 BR-17,22,26,31 BR-17,22,26,31 BR-17,22,26,31 BR-3S Low pedal or spongy pedal 1 2 3 4 5 Brake drag 1 11 4 2 3 9 8 5 6 7 10 Brake pull 5 1 2 3 Hard pedal but brake inefficient 1 2 3 8 4 7 6 Noise from brakes 8 1 4 2 5 3 6 7 9 10