Impreza Coupe FWD F4-1820cc 1.8L SOHC (1995)
(1) Ground check connector body K and L terminals which are accessible after removing A.B.S. check connector from lower side of steering
column.
(2) Turn ignition switch ON.
(3) The A.B.S. warning light comes on.
(4) Depress the brake pedal within 0.5 seconds after the warning light goes out so that the pressure gauge registers a pressure equal to the
initial value.
CAUTION: Do not depress the clutch pedal.
NOTE: The engine must not be operating.
5) When the hydraulic unit begins to work, and first the FL side performs decompression, holding, and compression, and then the FR side
performs decompression, holding, and compression.
6) Read values indicated on the pressure gauge and check if the fluctuation of the values between decompression and compression meets the
standard values. Also check if any irregular brake pedal tightness is fell.
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In case of hydraulic unit plunger piston malfunction
7) Connect the same pressure gauges to the end of the removed RL and RR pipes of the hydraulic unit.
8) Connect the FL and FR pipes to the hydraulic unit.
9) Bleed air from the pressure gauges and the FL and FR wheel cylinders.
10) Repeat step 4) procedures.
11) The hydraulic unit begins to work, and simultaneously the RL and RR wheel cylinders perform decompression, holding, and compression.
12) Read values indicated on the pressure gauges and check if they meet the standard value.
13) After checking, remove the pressure gauges from the RL and RR pipes and connect the RL and RR pipes to the hydraulic unit, and bleed air.
CHECKING THE HYDRAULIC UNIT WITH BRAKE TESTER
1) In the case of AWD AT vehicles, install a spare fuse with the FWD connector in the engine compartment to simulate FWD vehicles.
