Subaru Outback (BR): ABS Sequence Control

A: 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.

1. 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.

1. Run the "PC application for Subaru Select Monitor".
2. On "Main Menu" display, select {Each System Check}.
3. Select {Brake Control System}. When {ABS} is displayed, select the [OK] button.
4. Select the {ABS Function Check Mode} from {ABS Sequence Control Mode}.

2) Follow the procedures displayed in the Subaru Select Monitor to execute the following.

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/cm2, 511 psi).

3) The brake system being operated is displayed on the Subaru Select Monitor.

2. CONDITIONS FOR ABS SEQUENCE CONTROL

NOTE: The control operation starts at point A.

1. All wheel speed
2. Ignition key
3. ABS warning light
4. Stop light switch
5. Valve relay
6. FL decompression valve
7. FL compression valve
8. FR decompression valve
9. FR compression valve
10. RR decompression valve
11. RR compression valve
12. RL decompression valve
13. RL compression valve
14. Pump motor
15. 2 seconds
16. Light OFF
17. Light ON
18. 1.0 second
19. 1.4 seconds
20. 0.6 seconds
21. 0.4 seconds
22. Point A
23. Reset
24. Master cylinder pressure
25. FL wheel cylinder pressure
26. FR wheel cylinder pressure
27. RR wheel cylinder pressure
28. RL wheel cylinder pressure

B: SPECIFICATION

1. 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

A: 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.

1. 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.

1. Run the "PC application for Subaru Select Monitor".
2. On "Main Menu" display, select {Each System Check}.
3. Select {Brake Control System}. When {VDC} is displayed, select the [OK] button.
4. Select the {VDC Function Check Mode} from {Function Check Sequence}.

2) Operate according to the procedures displayed in the Subaru Select Monitor.

3) The brake system being operated is displayed on the Subaru Select Monitor.

2. CONDITIONS FOR VDC SEQUENCE CONTROL

NOTE: The control operation starts at point A.

1. All wheel speed
2. Ignition key
3. ABS warning light
4. VDC warning light
5. Stop light switch
6. Valve relay
7. VDC switching valve 1 FL
8. VDC switching valve 1 FR
9. VDC switching valve 2 FL
10. VDC switching valve 2 FR
11. FL decompression valve
12. FL compression valve
13. FR decompression valve
14. FR compression valve
15. RR decompression valve
16. RR compression valve
17. RL decompression valve
18. RL compression valve
19. Pump motor
20. 2 seconds
21. Approx. 1 second
22. Light OFF
23. Light ON
24. 3.4 seconds
25. 1 second
26. 1.6 seconds
27. Point A
28. Reset
29. 0.8 seconds
30. 1.2 seconds
31. 0.4 seconds
32. Master cylinder pressure
33. FR wheel cylinder pressure
34. FL wheel cylinder pressure
35. RL wheel cylinder pressure
36. RR wheel cylinder pressure

B: SPECIFICATION

1. 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.

• When the speed of at least one wheel reaches 10 km/h (6 MPH).
• After completion of VDC sequence control.
• When a malfunction is detected.

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