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Home >> Subaru >> 2014 >> Outback 2.5i, Standard Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Dynamics Control System >> VDC Control Module and Hydraulic Control Unit (VDCCM&H/U) >> Inspection >> Check Hydraulic Unit VDC Operation With Brake Tester

Check Hydraulic Unit VDC Operation With Brake Tester

  1. Set wheels other than the one to measure on free rollers.
  2. Prepare to operate the VDC sequence control. < Refer to VDC SEQUENCE CONTROL . >
  3. Set the front wheels or rear wheels on the brake tester (a) and set the gear to neutral.
    Fig 1: Setting Front Or Rear Wheels On Brake Tester
    G07914193Courtesy of SUBARU OF AMERICA, INC.
  4. Operate the brake tester.
  5. Perform VDC sequence control. < Refer to VDC SEQUENCE CONTROL . >
  6. When the hydraulic unit begins to work, check the following work sequence.
    1. The FL wheel performs compression, hold and decompression in sequence, and subsequently the FR wheel repeats the cycle.
    2. The RR wheel performs compression, hold and decompression in sequence, and subsequently the RL wheel repeats the cycle.
  7. Read values indicated on the brake tester and check if the fluctuation of the values between decompression and compression meets specification.
    Inspection conditions Front wheel Rear wheel
    When pressurized 2, 000 N (204 kgf, 450 lbf) or more 2, 000 N (204 kgf, 450 lbf) or more
    When depressurized 500 N (51 kgf, 112 lbf) or less 500 N (51 kgf, 112 lbf) or less
  8. After the inspection, depress the brake pedal and check that it is not abnormally hard, and tightness is normal.
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