Toyota
Toyota Land Cruiser
 Service Manual
Brake
Troubleshooting

PROBLEM SYMPTOMS TABLE

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.

Symptom

Suspect Area

Low pedal or spongy pedal 1. Fluid leaks for brake system 2. Air in brake system 3. Piston seals (Worn or damaged) 4. Hydraulic brake booster (Faulty)
Brake drags 1. Brake pedal freeplay (Minimum) 2. Parking brake lever travel (Out of adjustment) 3. Parking brake wire (Sticking) 4. Parking brake (Shoe clearance out of adjustment) 5. Pad (Cracked or distorted) 6. Piston (Stuck)
7. Piston (Frozen)
8. Tension or return spring (Faulty) 9. Hydraulic brake booster (Faulty)
Brake pulls 1. Piston (Stuck)
2. Pad (Cracked or distorted) 3. Piston (Frozen)
4. Disc (Scored)
5. Hydraulic brake booster (Faulty)
Hard pedal but brake inefficient 1. Fluid leaks for brake system 2. Air in brake system 3. Pad (Worn)
4. Pad (Cracked or distorted) 5. Pad (Oily)
6. Pad (Glazed)
7. Disc (Scored)
8. Hydraulic brake booster (Faulty)
Noise from brakes 1. Pad (Cracked or distorted) 2. Installation bolt (Loose) 3. Disc (Scored)
4. Pad support plate (Loose) 5. Sliding pin (Worn)
6. Pad (Dirty)
7. Pad (Glazed)
8. Tension or return spring (Faulty) 9. Anti-squeal shim (Damaged) 10.Shoe hold-down spring (Damaged)
Noise from hydraulic brake booster (Abnormal pump motor operation noise) Accumulator bracket clearance (Out of adjustment)
Brake warning light lights up*1 (Parking brake pedal released) 1. Brake fluid level 2. Hydraulic brake booster power supply system (Faulty)
Brake warning light lights up and brake warning buzzer sounds*2 Hydraulic brake booster power supply system (Faulty)
ABS warning light lights up*3 1. Anti - lock brake system (Faulty) 2. Hydraulic brake booster power supply system (Faulty)

*1, *3: The light may stay on for about 60 seconds after the engine is started. It is normal if it goes out after a while.

*2, *3: Depressing the brake pedal repeatedly may turn on the warning light and buzzer. It is normal if the light goes off and the buzzer stops sounding after a few seconds.

*3: While ABS warning light is ON.

    More about Brake:

    Brake fluid

    Brake pedal

    Brake system

    Front brake caliper

    Front brake pad

    Front speed sensor

    Hydraulic brake booster

    Proportioning and By-pass valve (P & B valve)

    Parking brake

    Parking brake lever

    Rear brake caliper

    Disassembly

    Rear brake pad

    Rear speed sensor

    Troubleshooting

    Toyota Land Cruiser Service Manual / Brake / Troubleshooting

    Toyota Land Cruiser Service Manual

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