Subaru Legacy 2002 Service Manual page 2089

ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM&H/U)
ABS
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 "neu-
tral".
(1) Brake tester
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
following 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
S401543A1002
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.
Initial value
When
decompressed
When
compressed
B4M1731C
8) After checking, also check if any irregular brake
pedal tightness is felt.
B4M1733B
B4M1730B
ABS-8
Front wheel Rear wheel
981 N 981 N
(100 kgf, 221 lb) (100 kgf, 221 lb)
490 N 490 N
(50 kgf, 110 lb) (50 kgf, 110 lb)
or less or less
981 N 981 N
(100 kgf, 221 lb) (100 kgf, 221 lb)
or more or more