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

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

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.

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 «VDC Function Check Mode».

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	(13)	Front RH decompression valve	(25)	1 second
(2)	Ignition key	(14)	Front RH compression valve	(26)	1.6 seconds
(3)	ABS warning light	(15)	Rear RH decompression valve	(27)	Point A
(4)	VDC warning light	(16)	Rear RH compression valve	(28)	0.4 seconds
(5)	Switch - stop light	(17)	Rear LH decompression valve	(29)	0.8 seconds
(6)	Valve relay	(18)	Rear LH compression valve	(30)	Master cylinder pressure
(7)	VDC switching valve 1 front LH	(19)	Pump motor	(31)	Front RH wheel cylinder pressure
(8)	VDC switching valve 1 front RH	(20)	A few seconds	(32)	Front LH wheel cylinder pressure
(9)	VDC switching valve 2 front LH	(21)	1.2 seconds	(33)	Rear LH wheel cylinder pressure
(10)	VDC switching valve 2 front RH	(22)	Light OFF	(34)	Rear RH wheel cylinder pressure
(11)	Front LH decompression valve	(23)	Light ON
(12)	Front LH compression valve	(24)	3.4 seconds

Specification

1. CONDITIONS FOR COMPLETION OF VDC SEQUENCE CONTROLWhen the following conditions develop, the VDC sequence control stops and VDC operation is returned to the normal control mode.• When the spee ...

Vehicle dynamics control system

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