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Subaru Legacy BN/BS (2015-2019) Service Manual: Operation

Subaru Legacy BN/BS (2015-2019) Service Manual / Vehicle dynamics control (vdc) / 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.

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.

NOTE:

For detailed operation procedures, refer to “Application help”.

(1) Turn the ignition switch to ON.

(2) On «Start» display, select «Diagnosis».

(3) On «Vehicle selection» display, input the target vehicle information and select «Confirmed».

(4) On «Main Menu» display, select «Each System».

(5) On «Select System» display, select «Brake Control System» and select «Enter».

(6) On «Select Function» display, select «Work Support».

(7) On «Work Support» display, select «ABS Sequence Control Mode».

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

(1) When using a brake tester, depress the brake pedal with a force of 100 N (10.2 kgf, 22.5 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

(11)

Rear RH compression valve

(20)

0.6 seconds

(2)

Ignition key

(12)

Rear LH decompression valve

(21)

0.4 seconds

(3)

ABS warning light

(13)

Rear LH compression valve

(22)

Point A

(4)

Switch - stop light

(14)

Pump motor

(23)

Master cylinder pressure

(5)

Valve relay

(15)

A few seconds

(24)

Front LH wheel cylinder pressure

(6)

Front LH decompression valve

(16)

Light OFF

(25)

Front RH wheel cylinder pressure

(7)

Front LH compression valve

(17)

Light ON

(26)

Rear RH wheel cylinder pressure

(8)

Front RH decompression valve

(18)

1.0 seconds

(27)

Rear LH wheel cylinder pressure

(9)

Front RH compression valve

(19)

1.4 seconds

(10)

Rear RH decompression valve
Specification
1. CONDITIONS FOR COMPLETION OF ABS SEQUENCE CONTROLWhen the following conditions develop, the ABS sequence control stops and ABS operation is returned to the normal control mode.• When the spee ...

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