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Home >> Subaru >> 2005 >> Forester XT, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake Control System - Vehicle Dynamics Control (VDC) >> VDC Hydraulic Control Module (VDCH/M) >> Inspection >> Checking The VDC Hydraulic Control Module (VDCH/M) Abs Operation With Brake Tester

Checking The VDC Hydraulic Control Module (VDCH/M) Abs Operation With Brake Tester

  1. Prepare for operating the ABS sequence control. < Ref. to ABS Sequence Control . >
  2. Set the front wheels or rear wheels on brake tester and set the select lever position to "N" range.
    Fig 1: Setting Front Wheels For Testing Brake Tester
    G03808532Courtesy of SUBARU OF AMERICA, INC.
    Fig 2: Setting Wheels For Testing Brake Tester
    G03808533Courtesy of SUBARU OF AMERICA, INC.
  3. Operate the brake tester.
  4. Perform the ABS sequence control. < Ref. to ABS Sequence Control . >
  5. When the VDCH/M begins to work, check the following working sequence.
    1. FL wheel performs decompression, holding, and compression in sequence, and subsequently FR wheel repeats the cycle.
    2. RR wheel performs decompression, holding, and compression in sequence, and subsequently RL wheel repeats the cycle.
  6. Read values indicated on the brake tester and check if fluctuation of values meet the standard values when decompressed and compressed.
    WHEEL SPECIFICATIONS

      Front wheel Rear wheel
    Initial value 1,000 N (102 kgf, 224 lb) 1,000 N (102 kgf, 224 lb)
    Decompressed 500 N (51 kgf, 112 lb) or less 500 N (51 kgf, 112 lb) or less
    Compressed 1,000 N (102 kgf, 224 lb) or more 1,000 N (102 kgf, 224 lb) or more
  7. After checking, also check if any irregular brake pedal tightness is felt.