Subaru Legacy 2003 Service Manual page 2940
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Also See for Legacy 2003:
- Owner's manual (472 pages) ,
- Service manual (280 pages) ,
- Quick reference index (80 pages)
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14.General Diagnostics Table
A: INSPECTION
Vehicle instability during braking
Poor braking
Vibration and/or noise
(while driving on slippery roads)
GENERAL DIAGNOSTICS TABLE
Symptom
Vehicle pulls to either side.
Vehicle spins.
Long braking/stopping distance
Wheel locks.
Brake dragging
Long brake pedal stroke
Vehicle pitching
Unstable or uneven braking
Excessive pedal vibration
Noise from ABSCM&H/U
Noise from front of vehicle
Noise from rear of vehicle
ABS-149
Probable faulty units/parts
• ABSCM&H/U (solenoid valve)
• ABS sensor
• Brake (caliper & piston, pads)
• Wheel alignment
• Tire specifications, tire wear and air pressures
• Incorrect wiring or piping connections
• Road surface (uneven, camber)
• ABSCM&H/U (solenoid valve)
• ABS sensor
• Brake (pads)
• Tire specifications, tire wear and air pressures
• Incorrect wiring or piping connections
• ABSCM&H/U (solenoid valve)
• Brake (pads)
• Air in brake line
• Tire specifications, tire wear and air pressures
• Incorrect wiring or piping connections
• ABSCM&H/U (solenoid valve, motor)
• ABS sensor
• Incorrect wiring or piping connections
• ABSCM&H/U (solenoid valve)
• ABS sensor
• Master cylinder
• Brake (caliper & piston)
• Parking brake
• Axle & wheels
• Brake pedal play
• Air in brake line
• Brake pedal play
• Suspension play or fatigue (reduced damping)
• Incorrect wiring or piping connections
• Road surface (uneven)
• ABSCM&H/U (solenoid valve)
• ABS sensor
• Brake (caliper & piston, pads)
• Tire specifications, tire wear and air pressures
• Incorrect wiring or piping connections
• Road surface (uneven)
• Incorrect wiring or piping connections
• Road surface (uneven)
• ABSCM&H/U (mount bushing)
• ABS sensor
• Brake piping
• ABSCM&H/U (mount bushing)
• ABS sensor
• Master cylinder
• Brake (caliper & piston, pads, rotor)
• Brake piping
• Brake booster & check valve
• Suspension play or fatigue
• ABS sensor
• Brake (caliper & piston, pads, rotor)
• Parking brake
• Brake piping
• Suspension play or fatigue
ABS (DIAGNOSTICS)
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