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