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

Prepare for the VDC sequence control. < Ref. to VDC SEQUENCE CONTROL . >
Set the front wheels or rear wheels on the brake tester and set the select lever position to the "N" range.

Fig 1: Checking Brake Tester (Front Wheels)

Fig 2: Checking Brake Tester (Rear Wheels)
Operate the brake tester.
Perform ABS sequence control. < Ref. to ABS SEQUENCE CONTROL . >
When the VDCH/M begins to work, check the working sequence in the following order.
1. The FL wheel performs decompression, hold and compression in sequence, and subsequently the FR wheel repeats the cycle.
2. The RR wheel performs decompression, hold and compression in sequence, and subsequently the RL wheel repeats the cycle.

Read values indicated on the brake tester and check if the fluctuation of the values between decompression and compression meets specification.

FRONT AND REAR WHEEL SPECIFICATION

	Front wheel	Rear wheel
When pressurized	2,000 N (204 kgf, 450 lb) or more	1,000 N (102 kgf, 225 lb) or more
When depressurized	500 N (51 kgf, 112.4 lb) or less	500 N (51 kgf, 112.4 lb) or less

After inspection, check whether any irregular brake pedal tightness cab be felt.