Subaru Legacy 2003 Service Manual page 2777

ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM&H/U)
ABS
17) Connect the air bleeder screws to RL and RR
caliper bodies.
18) Bleed air from brake line.
2. CHECKING THE HYDRAULIC UNIT ABS
OPERATION WITH BRAKE TESTER
1) In the case of AWD AT vehicles, install a spare
fuse with the FWD connector in the main fuse box
to simulate FWD vehicles.
(1) FWD connector
2) Prepare for operating ABS sequence control.
<Ref. to ABS-9, ABS Sequence Control.>
3) Set the front wheels or rear wheels on the brake
tester and set the select lever's position at "neutral".
( 1 )
(1) Brake tester
(1) Brake tester
( 1 )
ABS00158
ABS00136
( 1 )
ABS00137
ABS-8
4) Operate the brake tester.
5) Perform ABS sequence control.
<Ref. to ABS-9, ABS Sequence Control.>
6) Hydraulic unit begins to work; and check the fol-
lowing working sequence.
(1) The FL wheel performs decompression,
holding, and compression in sequence, and
subsequently the FR wheel repeats the cycle.
(2) The RR wheel performs decompression,
holding, and compression in sequence, and
subsequently the RL wheel repeats the cycle.
7) Read values indicated on the brake tester and
check if the fluctuation of values, when decom-
pressed and compressed, meet the standard val-
ues.
Front wheel
981 N
Initial value
(100 kgf, 221 lb)
When 490 N
decom- (50 kgf, 110 lb)
pressed or less
When 981 N
com- (100 kgf, 221 lb)
pressed or more
8) After checking, also check if any irregular brake
pedal tightness is felt.
Rear wheel
981 N
(100 kgf, 221 lb)
490 N
(50 kgf, 110 lb)
or less
981 N
(100 kgf, 221 lb)
or more