Subaru 2002 IMPREZA Service Manual page 2083

ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM&H/U)
4) Bleed air from the pressure gauges.
5) Perform the ABS sequence control.
<Ref. to ABS-11, ABS Sequence Control.>
6) When the hydraulic unit begins to work, and first
the FL side performs decompression, holding, and
compression, and then the FR side performs de-
compression, holding, and compression.
7) Read values indicated on the pressure gauge
and check if the fluctuation of the values between
decompression and compression meets the stan-
dard values. Also check if any irregular brake pedal
tightness is felt.
Front wheel
3,432 kPa
Initial value
(35 kgf/cm
psi)
490 kPa
When
decom-
(5 kgf/cm
pressed
or less
3,432 kPa
When
(35 kgf/cm
compressed
psi)
or more
8) Remove the pressure gauges from FL and FR
caliper bodies.
9) Remove the air bleeder screws from the RL and
RR caliper bodies.
10) Connect the air bleeder screws to the FL and
FR caliper bodies.
11) Connect two pressure gauges to the RL and
RR caliper bodies.
12) Bleed air from the pressure gauges and the FL
and FR caliper bodies.
13) Perform the ABS sequence control.
<Ref. to ABS-11, ABS Sequence Control.>
14) When the hydraulic unit begins to work, at first
the RR side performs decompression, holding, and
compression, and then the RL side performs de-
compression, holding, and compression.
15) Read values indicated on the pressure gauges
and check if they meet the standard value.
16) After checking, remove the pressure gauges
from caliper bodies.
17) Connect the air bleeder screws to RL and RR
caliper bodies.
18) Bleed air from the brake line.
Rear wheel
3,432 kPa
2 2
, 498 (35 kgf/cm , 498
psi)
490 kPa
2 2
, 71 psi) (5 kgf/cm , 71 psi)
or less
3,432 kPa
2 2
, 498 (35 kgf/cm , 498
psi)
or more
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) Main fuse box
(2) FWD connector
2) Prepare for operating the ABS sequence control.
<Ref. to ABS-11, ABS Sequence Control.>
3) Set the front wheels or rear wheels on the brake
tester and set the select lever's position at "N"
range.
(1) Brake tester
4) Operate the brake tester.
5) Perform the ABS sequence control.
<Ref. to ABS-11, ABS Sequence Control.>
6) Hydraulic unit begins to work; and check the fol-
lowing working sequence.
ABS-9
ABS
BR0093
B4M1733B
B4M1730B