Antilock Brakes / Traction Control Systems: Description and Operation

ABS Sequence Control

OPERATION

1) While the ABS sequence control is being performed, the operation of the hydraulic unit can be checked using the brake tester or pressure gauge after the hydraulic unit solenoid valve operation.
2) ABS sequence control can be started by the Subaru Select Monitor.

ABS SEQUENCE CONTROL WITH SUBARU SELECT MONITOR

NOTE:
In the event of any trouble, the ABS sequence control will not operate.

1) Connect the Subaru Select Monitor to data link connector under the driver's side instrument panel lower cover.
2) Turn the ignition switch to ON.
3) Run the "PC application for Subaru Select Monitor".
4) Set the Subaru Select Monitor to "Brake Control" mode.
5) When the "Function Check Sequence" is selected, the "ABS sequence control" will start.
6) Execute the following operations when the message "Press the brake pedal so that the brake pedal force is between 100 and 150 kgf" is displayed.
(1) When using a brake tester, press the brake pedal pad with a force of 1,000 N (102 kgf, 225 lbf).
(2) When using a pressure gauge, press the brake pedal so that the pressure gauge indicates 3,500 kPa (36 kgf/cml, 511 psi).
7) The brake system being operated is displayed on the Subaru Select Monitor

CONDITIONS FOR ABS SEQUENCE CONTROL








NOTE:
The control operation starts at point A.

SPECIFICATION

CONDITIONS FOR COMPLETION OF ABS SEQUENCE CONTROL

When the following conditions develop, the ABS sequence control stops and ABS operation is returned to the normal control mode.
^ When the speed of at least one wheel reaches 10 km/h (6 MPH).
^ When the brake pedal is released during ABS sequence control and the stop light switch is becomes OFF.
^ After completion of ABS sequence control.
^ When a malfunction is detected.

VDC Sequence Control

OPERATION

1) While the VDC sequence control is performed, the operation of the hydraulic unit can be checked using the brake tester or pressure gauge after the hydraulic unit solenoid valve is operated.
2) VDC sequence control can be started by Subaru Select Monitor.

VDC SEQUENCE CONTROL WITH SUBARU SELECT MONITOR

NOTE:
In the event of any trouble, sequence control will not operate.

1) Connect the Subaru Select Monitor to data link connector under the driver's side instrument panel lower cover.
2) Turn the ignition switch to ON.
3) Run the "PC application for Subaru Select Monitor".
4) Set the Subaru Select Monitor to "Brake Control" mode.
5) When the "VDC Inspection Mode" is selected from the "Function Check Sequence" menu, the "VDC sequence control" will start.
6) Operation points will be displayed on Subaru Select Monitor.

CONDITIONS FOR VDC SEQUENCE CONTROL








NOTE:
The control operation starts at point A.

SPECIFICATION

CONDITIONS FOR COMPLETION OF VDC SEQUENCE CONTROL

When the following conditions develop, the VDC sequence control stops and VDC operation is returned to the normal control mode.
1) When the speed of at least one wheel reaches 10 km/h (6 MPH).
2) When the brake pedal is pressed during sequence control and the stop light switch is set to ON.
3) After completion of VDC sequence control.
4) When a malfunction is detected.