Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 146

EC(w/o STI)-17

Pressure Control Solenoid Valve Assembly

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

8. Pressure Control Solenoid

Valve Assembly

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Lift up the vehicle.

3) Disconnect the connector (A) and evaporation

hose (B) from the pressure control solenoid valve

assembly.

4) Remove the nut (C) securing the bracket to the

fuel tank and remove the pressure control solenoid

valve assembly.

B: INSTALLATION

Install in the reverse order of removal.
Tightening torque:

7.35 N·m (0.7 kgf-m, 5.4 ft-lb)

C: INSPECTION

1. PRESSURE CONTROL SOLENOID

VALVE ASSEMBLY

1) Check that the pressure control solenoid valve

assembly has no deformation, cracks or other dam-

ages.

2) Check the resistance between the pressure con-

trol solenoid valve assembly terminals.

3) Connect the Mighty Vac to fuel tank side of the

pressure control solenoid valve assembly.

4) Using the Mighty Vac, generate the positive

pressure. Check that the Mighty Vac gauge needle

rises at the pressure (0.55 — 1.55 kPa (0.006 —

0.016 kgf/cm

2

, 0.08 — 0.23 psi)) then lowers.

5) Using the Mighty Vac, generate the vacuum

pressure. Check that the Mighty Vac gauge needle

does not rise.

2. OTHER INSPECTIONS

Check that the evaporation hose has no cracks,

damage or loose part.

IN-00203

EC-03067

(A)

(B)

(B)

(C)

Terminal No.

Standard

1 and 2

20 — 30 Ω

(A) Fuel tank side
(B) Canister side

(C) Atmospheric pressure

EC-02454

2 1

EC-03225

(B)

(A)

(C)

EC(w/o STI)-18

Drain Filter

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

9. Drain Filter

A: SPECIFICATION

The leak check valve assembly is a non-disassem-

bled part. Do not remove the drain filter from the

leak check valve assembly. Refer to “Canister” for

removal and installation procedures. <Ref. to

EC(w/o STI)-7, REMOVAL, Canister.> <Ref. to

EC(w/o STI)-9, INSTALLATION, Canister.>

EC(w/o STI)-19

Shut Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

10.Shut Valve

A: REMOVAL

WARNING:

Place “NO OPEN FLAMES” signs near the

working area.
CAUTION:

Be careful not to spill fuel.

1) Remove the fuel filler pipe. <Ref. to FU(w/o STI)-

75, REMOVAL, Fuel Filler Pipe.>

2) Disconnect the evaporation hose from the shut

valve.

3) Remove the shut valve from the fuel filler pipe.

B: INSTALLATION

Install in the reverse order of removal.
Tightening torque:

4.5 N·m (0.5 kgf-m, 3.3 ft-lb)

C: INSPECTION

1) Check that the shut valve has no deformation,

cracks or other damages.

2) Check that the evaporation hose has no cracks,

damage or loose part.

EC-02753

EC-02481

EC(w/o STI)-20

Leak Check Valve Assembly

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

11.Leak Check Valve Assembly

A: REMOVAL

Refer to “Canister” for removal procedures. <Ref.

to EC(w/o STI)-7, REMOVAL, Canister.>

B: INSTALLATION

Refer to “Canister” for installation procedures.

<Ref. to EC(w/o STI)-9, INSTALLATION, Canis-

ter.>

C: DISASSEMBLY

Disconnect the drain tube from the leak check

valve assembly.
NOTE:

Disconnect the quick connector as shown in the fig-

ure.

(a) Retainer

EC-02281

(a)

(a)

(a)

EC-02988