Subaru Legacy III (2000-2003 year). Manual - part 408

IN(H4DOSTC)-20

INTAKE (INDUCTION)

SOLENOID BOX ASSEMBLY

C: INSPECTION

1) Make sure the inner hoses are not cracked and that connections are tight.
2) Make sure the air filter is properly installed.
3) Make sure the solenoid valve is not damaged.

(1) Turbocharging pressure relief 

valve control solenoid valve #2

(4) Turbocharging pressure relief 

valve control solenoid valve #1

(6) Intake air valve control solenoid 

valve

(2) Filter

(5) Exhaust valve control solenoid 

valve (For negative pressure)

(7) Exhaust valve control solenoid 

valve (For positive pressure)

(3) Exhaust valve control duty sole-

noid valve

IN-00104

1

2

6

8

5

5

5

5

3

10

12

12

12

12

3

( 1 )

( 2 )

( 3 )

( 4 )

( 5 )

( 6 )

( 7 )

IN(H4DOSTC)-21

INTAKE (INDUCTION)

WASTEGATE CONTROL SOLENOID VALVE

10.Wastegate Control Solenoid 

Valve

A: REMOVAL

1) Remove the battery.
2) Remove the wastegate control solenoid valve
bracket installation nut from engine compartment.

3) Remove the front tire LH, and then lift-up the ve-
hicle.
4) Remove the front mudguard LH.
5) Pull out the wastegate control solenoid valve
and bracket from the vehicle as a unit.
6) Disassemble the connector (A), pressure hose
(B) and solenoid valve (C).

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

16 N·m (1.6 kgf-m, 11.4 ft-lb)

IN-00105

IN-00106

( A )

( B )

( C )

IN-00105

IN(H4DOSTC)-22

INTAKE (INDUCTION)

SURGE TANK

11.Surge Tank

A: REMOVAL

1) Remove the battery.
2) Remove the surge tank installation nut from en-
gine compartment.

3) Remove the front tire LH, and lift the vehicle.
4) Remove the front mudguard LH.
5) Remove the surge tank.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

16 N·m (1.6 kgf-m, 11.8 ft-lb)

IN-00107

IN-00108

IN-00108

IN-00107

IN(H4DOSTC)-23

INTAKE (INDUCTION)

DIFFERENTIAL PRESSURE SENSOR

12.Differential Pressure Sensor

A: REMOVAL

1) Remove the ground cable from battery.

2) Disconnect the connector (A) of differential pres-
sure sensor.
3) Disconnect the hose (B) of differential pressure
sensor.
4) Remove the differential pressure sensor.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

6.4 N·m (0.65 kgf-m, 4.7 ft-lb)

FU-00009

IN-00109

( A )

( B )

IN-00109

( A )

( B )