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Problem Symptoms Table

Use the table below to help determine 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.

BRAKE SYSTEM 

BRAKE SYSTEM - PROBLEM SYMPTOMS CHART

Symptom Suspected area See
 
Low pedal or spongy pedal
  1. 1. Fluid leaks in brake system (VSC)
 BRAKE FLUID (W/ VSC) 
  1. 2. Fluid leaks in brake system (ECB)
 BRAKE FLUID (W/ ECB) 
  1. 3. Air in brake system (VSC)
 BRAKE FLUID (W/ VSC) 
  1. 4. Air in brake system (ECB)
 BRAKE FLUID (W/ ECB) 
  1. 5. Piston seals (Worn or damaged) (FRONT) (3GR-FSE)
 REMOVAL 
  1. 7. Piston seals (Worn or damaged) (FRONT) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 7. Piston seals (Worn or damaged) (REAR)
 DISASSEMBLY 
  1. 8. Master cylinder (Faulty) (VSC)
 BRAKE MASTER CYLINDER (W/ VSC) 
  1. 9. Master cylinder (Faulty) (ECB)
 ON-VEHICLE INSPECTION 
  1. 10. Booster push rod (Out of adjustment) (VSC)
 INSPECTION 
Brake drag
  1. 1. Brake pedal freeplay (Minimal)
 DISASSEMBLY 
  1. 2. Parking brake pedal travel (Out of adjustment)
 PARKING BRAKE PEDAL
  1. 3. Parking brake cable (Sticking)
 PARKING BRAKE CABLE
  1. 4. Parking brake shoe clearance (Out of adjustment)
 INSPECTION
  1. 5. Pad (Cracked or distorted) (FRONT) (3GR-FSE)
 REMOVAL 
  1. 6. Pad (Cracked or distorted) (FRONT) (3UZ-FE)
 REMOVAL 
  1. 7. Pad (Cracked or distorted) (REAR)
 REMOVAL 
  1. 8. Piston (Stuck) (FRONT) (3GR-FSE)
 DISASSEMBLY 
  1. 9. Piston (Stuck) (FRONT) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 10. Piston (Stuck) (REAR)
 DISASSEMBLY 
  1. 11. Piston (Frozen) (3GR-FSE)
 DISASSEMBLY 
  1. 12. Piston (Frozen) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 13. Piston (Frozen) (REAR)
 DISASSEMBLY 
  1. 14. Booster push rod (Out of adjustment) (VSC)
 INSPECTION 
  1. 15. Vacuum leaks in booster systems (VSC)
 ON-VEHICLE INSPECTION 
  1. 16. Master cylinder (Faulty) (VSC)
 BRAKE MASTER CYLINDER (W/ VSC) 
  1. 17. Master cylinder (Faulty) (ECB)
 ON-VEHICLE INSPECTION 
Brake pull
  1. 1. Piston (Stuck) (3GR-FSE)
 DISASSEMBLY 
  1. 2. Piston (Stuck) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 3. Piston (Stuck) (REAR)
 DISASSEMBLY 
  1. 4. Pad (Oily) (3GR-FSE)
 REMOVAL 
  1. 5. Pad (Oily) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 6. Pad (Oily) (REAR)
 REMOVAL 
  1. 7. Piston (Frozen) (3GR-FSE)
 DISASSEMBLY 
  1. 8. Piston (Frozen) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 9. Piston (Frozen) (REAR)
 DISASSEMBLY 
  1. 10. Disc (Scored) (3GR-FSE)
 DISASSEMBLY 
  1. 11. Disc (Scored) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 12. Disc (Scored) (REAR)
 DISASSEMBLY 
  1. 13. Pad (Cracked or distorted) (3GR-FSE)
 REMOVAL 
  1. 14. Pad (Cracked or distorted) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 15. Pad (Cracked or distorted) (REAR)
 REMOVAL 
Hard pedal but brake inefficient
  1. 1. Fluid leaks in brake system (VSC)
 BRAKE FLUID (W/ VSC) 
  1. 2. Fluid leaks in brake system (ECB)
 BRAKE FLUID (W/ ECB) 
  1. 3. Air in brake system (VSC)
 BRAKE FLUID (W/ VSC) 
  1. 4. Air in brake system (ECB)
 BRAKE FLUID (W/ ECB) 
  1. 5. Pad (Worn) (3GR-FSE)
 REMOVAL 
  1. 6. Pad (Worn) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 7. Pad (Worn) (REAR)
 REMOVAL 
  1. 8. Pad (Cracked or distorted) (3GR-FSE)
 REMOVAL 
  1. 9. Pad (Cracked or distorted) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 10. Pad (Cracked or distorted) (REAR)
 REMOVAL 
  1. 11. Pad (Oily) (3GR-FSE)
 REMOVAL 
  1. 12. Pad (Oily) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 13. Pad (Oily) (REAR)
 REMOVAL 
  1. 14. Pad (Glazed) (3GR-FSE)
 REMOVAL 
  1. 15. Pad (Glazed) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 16. Pad (Glazed) (REAR)
 REMOVAL 
  1. 17. Disc (Scored) (3GR-FSE)
 REMOVAL 
  1. 18. Disc (Scored) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 19. Disc (Scored) (REAR)
 REMOVAL 
  1. 20. Booster push rod (Out of adjustment) (VSC)
 INSPECTION 
  1. 21. Vacuum leaks in booster system (VSC)
 ON-VEHICLE INSPECTION 
Noise from brakes
  1. 1. Pad (Cracked or distorted) (3GR-FSE)
 REMOVAL 
  1. 2. Pad (Cracked or distorted) (3UZ-FE)
 INSTALLATION 
  1. 3. Pad (Cracked or distorted) (REAR)
 REMOVAL 
  1. 4. Install bolt (Loose) (3GR-FSE)
 REMOVAL 
  1. 5. Install bolt (Loose) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 6. Install bolt (Loose) (REAR)
 REMOVAL 
  1. 7. Disc (Scored) (3GR-FSE)
 REMOVAL 
  1. 8. Disc (Scored) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 9. Disc (Scored) (REAR)
 DISASSEMBLY 
  1. 10. Pad support plate (Loose) (3GR-FSE)
 REMOVAL 
  1. 11. Pad support plate (Loose) (3UZ-FE)
 REMOVAL 
  1. 12. Pad support plate (Loose) (REAR)
 REMOVAL 
  1. 13. Sliding pin (Worn) (3GR-FSE)
 REMOVAL 
  1. 14. Sliding pin (Worn) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 15. Sliding pin (Worn) (REAR)
 DISASSEMBLY 
  1. 16. Pad (Dirty) (3GR-FSE)
 REMOVAL 
  1. 17. Pad (Dirty) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 18. Pad (Dirty) (REAR)
 REMOVAL 
  1. 19. Pad (Glazed) (3GR-FSE)
 REMOVAL 
  1. 20. Pad (Glazed) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 21. Pad (Glazed) (REAR)
 REMOVAL 
  1. 22. Anti-squeal shim (Damaged) (3GR-FSE)
 REMOVAL 
  1. 23. Anti-squeal shim (Damaged) (3UZ-FE)
 FRONT BRAKE (FOR 3UZ-FE) 
  1. 24. Anti-squeal shim (Damaged) (REAR)
 REMOVAL 
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