Subaru IMPREZA 2002 Service Manual page 370

GENERAL DIAGNOSTICS TABLE
ABS (DIAGNOSTICS)
Symptom
Vibration and/or noise
(while driving on slippery roads)
Excessive pedal vibration
Noise from ABSCM&H/U
Noise from front of vehicle
Noise from rear of vehicle
Probable faulty unitslparts
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-I 84