Brake system malfunctions [Toyota Camry XV20]

Malfunction	Cause
Braking begins when the pedal is moved almost to the floor (increased pedal travel)	Leak in the system
	Presence of air in the system
	Jamming of the rear brake automatic adjustment mechanism
	Damage to the twin metering valve
	Increased lateral play of the brake disc due to poor seating of wheel bearings or their wear
"Swampy" pedal	Air in the system
	Violation of the clearance adjustment between the pads and the drum
	Clogged vent hole in tank lid
	Deformation of brake pads
	Using a liquid with a low boiling point
	Damage to disc brake caliper seals
Insufficient braking efficiency	Air in the system
	Increased clearance between the pads and the drum
	Oiling of the brake pads or water getting on them
	Uneven contact of the brake shoes with the drum
	Brake fluid leak in the system
	Exposure of the lining surface to dirt, oil, grease and water
	Wear of linings or pads exceeds permissible limit
	Wear of the main brake cylinder components or the wheel brake cylinder components
	Brake pedal lever mechanism sticking
	Disc brake caliper pistons boiling
Unbalanced braking	Tire pressure variation
	Damage to linings or pads
	Damage to the wheel cylinder
	Wheel bearing misalignment
	Damage or wear to the drum surface
	Wear of wheel cylinder elements
	Loosening of fastening elements of working brake cylinders or brake support disc
	Wheel alignment fault
Brake vibration	Damage to linings or pads
	Damage to the drum or disc
	Oiling of linings
"Grabbing" the brakes	Pedal adjustment failure
	Damage to the brake drive lever mechanism
	Master cylinder or wheel cylinder failure
	Damage to brake pads
	The parking brake does not release
	Clogged pipelines or twin metering valve
	Damage to brake shoe return springs
Rear wheel lock	Insufficient braking efficiency of the front circuit
	Excessive wear or abnormal tire pressure
	Incorrect operation of the twin metering valve (appears when the brake pedal is pressed lightly)
	Local wear on the surface of brake linings
	Low tire pressure on rear wheels
Decrease in the liquid level without any signs of leakage in the system elements	Leakage from the master cylinder into the vacuum booster of the system
	Vacuum booster spring failure
Brake pedal pulsation	Brake drum ellipticity or eccentricity
	Increased lateral runout of the brake disc
	Uneven thickness of brake disc
Spontaneous braking	Violation of the adjustment of system elements
Spontaneous braking	Breach of the vacuum booster seal

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The article material has been checked: Kolokoltsev Grigory

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Camry XV20: Brake system

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