Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 148

EC(w/o STI)-25

PCV Hose Assembly

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

13.PCV Hose Assembly

A: REMOVAL

CAUTION:

Do not remove unless the hose and the diag-

nostics connector are broken.

1) Disconnect the connector (A) from the PCV hose

assembly A, and remove the PCV hose assembly

A from the rocker cover RH.

2) Disconnect the connector (A) from the PCV hose

assembly B, and remove the PCV hose assembly

B from the rocker cover LH.

3) Remove the intake manifold. <Ref. to FU(w/o

STI)-18, REMOVAL, Intake Manifold.>

4) Remove the turbocharger. <Ref. to IN(w/o STI)-

14, REMOVAL, Turbocharger.>

5) Remove the intake duct. <Ref. to IN(w/o STI)-

11, REMOVAL, Intake Duct.>

6) Remove the PCV hose assembly C from the in-

take duct and the cylinder block RH.
NOTE:

Pinch the clamp of the PCV hose assembly C by fit-

ting the cut out in the ST with the protrusion on the

clamp as shown in the figure, and unlock the

clamp.

ST 18353AA000 CLAMP PLIERS

EC-02996

(A)

EC-02997

(A)

ME-04374

ST

EC-02735

EC(w/o STI)-26

PCV Hose Assembly

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

B: INSTALLATION

1) Install the PCV hose assembly C to the intake

duct and the cylinder block RH.
NOTE:

Use a new clamp for the PCV hose assembly C, fit

the cut out in the ST with the protrusion on the

clamp as shown in the figure, and lock the clamp.

ST 18353AA000 CLAMP PLIERS

2) Install the intake duct. <Ref. to IN(w/o STI)-11,

INSTALLATION, Intake Duct.>

3) Install the turbocharger. <Ref. to IN(w/o STI)-15,

INSTALLATION, Turbocharger.>

4) Install the intake manifold. <Ref. to FU(w/o STI)-

22, INSTALLATION, Intake Manifold.>

5) Install the PCV hose assembly B to the rocker

cover LH, and connect the connector (A) to the

PCV hose assembly B.

6) Install the PCV hose assembly A to the rocker

cover RH, and connect the connector (A) to the

PCV hose assembly A.

C: INSPECTION

1. DIAGNOSIS CONNECTOR

1) Check that the diagnosis connector has no de-

formation, cracks and any other damage.

2) Check the resistance between the diagnosis

connector terminals.

2. OTHER INSPECTIONS

1) Check that the PCV connector has no deforma-

tion, cracks or other damages.

2) Check that the hose has no cracks, damage or

loose part.

ME-04374

ST

EC-02735

Terminal No.

Standard

1 and 2

Less than 1 Ω

EC-02997

(A)

EC-02996

(A)

2 1

EC-02428

EC(w/o STI)-27

PCV Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

14.PCV Valve

A: REMOVAL

CAUTION:

Do not remove unless the PCV valve is broken.

1) Remove the intake manifold. <Ref. to FU(w/o

STI)-18, REMOVAL, Intake Manifold.>

2) Remove the secondary air combination valve

RH. <Ref. to EC(w/o STI)-30, REMOVAL, Second-

ary Air Combination Valve.>

3) Disconnect the vacuum hose (A) from the PCV

valve and remove the PCV valve from the PCV

connector.
NOTE:

Pinch the clamp of the PCV connector by fitting the

cut out in the ST with the protrusion on the clamp as

shown in the figure, and unlock the clamp.

ST 18353AA000 CLAMP PLIERS

B: INSTALLATION

1) Install the PCV valve to the PCV connector and

connect the vacuum hose (A) to the PCV valve.
NOTE:

Use a new clamp for the PCV connector clamp, fit

the cut out in the ST with the protrusion on the

clamp as shown in the figure, and lock the clamp.

ST 18353AA000 CLAMP PLIERS

2) Install the secondary air combination valve RH.

<Ref. to EC(w/o STI)-31, INSTALLATION, Second-

ary Air Combination Valve.>

3) Install the intake manifold. <Ref. to FU(w/o STI)-

22, INSTALLATION, Intake Manifold.>

4) Install the collector cover.

ME-04374

ST

EC-02736

(A)

ME-04374

ST

EC-02736

(A)

EC(w/o STI)-28

PCV Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

C: INSPECTION

1. PCV VALVE

1) Check that the PCV valve has no deformation,

cracks or other damages.

2) Check that air is discharged from (B) when air is

blown into (A).

3) Check that air does not come out from (B) when

air is blown into (A).

2. OTHER INSPECTIONS

Check the vacuum hose for cracks, damage or

looseness.

EC-02507

(B)

(A)

EC-02508

(A)

(B)