B: CHECKING THE HYDRAULIC UNIT
OPERATION
1) Do ABS sequence control patterns take place in correct
order?
If not, check wiring and piping for incorrect connections.
2) Are oil pressure or braking force variations within speci-
fications?
If not, check master cylinder, brake piping, hydraulic unit,
proportioning valve and wheel cylinder for improper opera-
tion.
3) Does pedal hardness change before and after ABS
sequence control?
If so, bleed air from brake line.
273
4-4cBRAKES [ABS 5.3 TYPE]
11. General Diagnostics Table
![SUBARU LEGACY 1996 Service Repair Manual B: CHECKING THE HYDRAULIC UNIT
OPERATION
<Ref. to 4-4 [W22C1] or [W22C2].>
1) Do ABS sequence control patterns take place in correct
order?
If not, check wiring and piping for incorrect connections.
2](/manual-img/17/57433/w960_57433-2612.png "SUBARU LEGACY 1996 Service Repair Manual B: CHECKING THE HYDRAULIC UNIT
OPERATION
<Ref. to 4-4 [W22C1] or [W22C2].>
1) Do ABS sequence control patterns take place in correct
order?
If not, check wiring and piping for incorrect connections.
2")