Subaru 2009 IMPREZA, Руководство по обслуживанию

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ABS-8
ABS Control Module and Hydraulic Control Unit (ABSCM&H/U)
ABS
2. CHECKING THE HYDRAULIC UNIT ABS
OPERATION WITH THE BRAKE TESTER
1) For AT model, install the spare fuse to the FWD
connector located in the fuse & relay box.
2) Since the MT model cannot cut off the AWD cir-
cuit, set the wheels other than the measured one
on free rollers.
3) Prepare for ABS sequence control.
<Ref. to ABS-10, ABS Sequence Control.>
4) Set the front wheels or rear wheels on the brake
tester and set the gear to “neutral”.
5) Operate the brake tester.
6) Perform ABS sequence control.
<Ref. to ABS-10, ABS Sequence Control.>
7) When the hydraulic unit begins to work, check
the following work sequence.
(1) The FL wheel performs decompression,
hold and compression in sequence, and subse-
quently the FR wheel repeats the cycle.
(2) The RR wheel performs decompression,
hold and compression in sequence, and subse-
quently the RL wheel repeats the cycle.
8) Read values indicated on the brake tester and
check if the fluctuation of the values between de-
compression and compression meets specifica-
tion.
9) After the inspection, depress the brake pedal
and check that it is not abnormally hard, and tight-
ness is normal.
D: REPLACEMENT
CAUTION:
• Because the seal of the ABSCM cannot be re-
placed, do not pull or peel it by lifting it up.
• Because the screw of the H/U will become
slightly worn in every replacement procedure, 5
times is the maximum number of times for re-
placement. If a problem is found such as not
being able to torque the screw to specifications
even before 5 replacement operations are per-
formed, replace the H/U body.
• When installing the ABSCM, always use new
screws.
• When the sealing surface of the ABSCM or H/
U is dirty or damaged and it cannot be removed
or repaired, replace with a new part.
1) Remove the ABSCM&H/U. <Ref. to ABS-6, RE-
MOVAL, ABS Control Module and Hydraulic Con-
trol Unit (ABSCM&H/U).>
2) To prevent entry of foreign objects and brake flu-
id leakage, plug the oil pressure port of the AB-
SCM&H/U using a screw plug, etc.
(1) Fuse & Relay Box
(2) FWD connector (No. 15)
(1) Brake tester
ABS01033
(1)
(2)
ABS00136
(1)
ABS00137
(1)
Front wheel Rear wheel
Initial value
1,000 N
(102 kgf, 225 lbf)
1,000 N
(102 kgf, 225 lbf)
When
depressurized
500 N
(51 kgf, 112 lbf)
or less
500 N
(51 kgf, 112 lbf)
or less
When pressurized
1,000 N
(102 kgf, 225 lbf)
or more
1,000 N
(102 kgf, 225 lbf)
or more