Subaru Legacy 2003 Service Manual page 2797

ABS (DIAGNOSTICS)
2. SYMPTOMS
ABS operating condi-
tion
• How to step on brake pedal :
a) Operating time :
b) Operating noise :
• What kind of noise?
c) Reaction force of brake pedal
Behavior of vehicle a) Directional stability cannot be obtained or steering arm refuses to work when applying brakes :
• When :
b) Directional stability cannot be obtained or steering arm refuses to work when accelerating :
• When :
c) Brakes are out of order :
• What :
d) Poor acceleration :
• What :
e) Occurrence of vibration :
• Where
• What kind :
f) Occurrence of abnormal noise :
• Where
• What kind :
g) Occurrence of other phenomena :
• What kind :
CHECK LIST FOR INTERVIEW
Performs no work.
Operates only when abruptly applying brakes.
Produce /
Yes / No
Yes / No
Yes /
Does not produce
Yes / No
No
Yes / No
Yes / No
Yes / No
ABS-6
Vehicle speed :
Knock
Gong gong
Bong
Buzz
Gong gong buzz
Others :
Stick
Press down once with a clunk
Press and released
Others :
Vehicle turns to right
Vehicle turns to left
Spins
Others :
Vehicle turns to right
Vehicle turns to left
Spins
Others :
Braking distance is long
Brakes lock or drag
Pedal stroke is long
Pedal sticks
Others :
Fails to accelerate
Engine stalls
Others :
km/h
MPH
sec