Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 54

EC(STI)-30

Secondary Air Combination Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

B: INSTALLATION

1. SECONDARY AIR COMBINATION

VALVE LH

Install in the reverse order of removal.
NOTE:

Use a new gasket.
Tightening torque:

T1: 9 N·m (0.9 kgf-m, 6.6 ft-lb)

T2: 19 N·m (1.9 kgf-m, 14.0 ft-lb)

2. SECONDARY AIR COMBINATION

VALVE RH

Install in the reverse order of removal.
NOTE:

Use a new gasket.
Tightening torque:

T1: 9 N·m (0.9 kgf-m, 6.6 ft-lb)

T2: 19 N·m (1.9 kgf-m, 14.0 ft-lb)

(A) Secondary air combination valve LH
(B) Clip

(C) Air duct A
(D) Gasket

(E) Air duct B

(F) Secondary air pipe LH

(G) Gasket

(G)

(B)

(E)

(B)

(C)

(A)

(F)

(D)

EC-02722

T2

T1

T2

T2

(A) Secondary air combination valve RH
(B) Clip

(C) Air duct A
(D) Gasket

(E) Air duct B

(F) Secondary air pipe RH

(G) Gasket

(B)

(E)

(B)

(C)

(D)

(G)

(F)

(A)

EC-02723

T2

T1

EC(STI)-31

Secondary Air Combination Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

C: INSPECTION

1. SECONDARY AIR COMBINATION

VALVE LH

1) Check that the secondary air combination valve

LH has no deformation, cracks or other damages.

2) Check the resistance between the terminals of

secondary air combination valve LH.

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

air is blown into (A).

4) Connect the battery positive terminal to the ter-

minal No. 6 and the battery negative terminal to the

terminal No. 4. Check that air is discharged from

(B), when supplying air to (A).

Terminal No.

Standard

4 and 6

5.0±0.5 Ω (when 20°C (68°F))

2 and 3

15 kΩ or less

1 and 2

4.5 kΩ or less

EC-02429

3

1

6 5 4

2

EC-02476

(A)

(B)

3

1

6 5 4

2

EC-02477

(A)

(B)

EC(STI)-32

Secondary Air Combination Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

2. SECONDARY AIR COMBINATION

VALVE RH

1) Check that the secondary air combination valve

RH has no deformation, cracks or other damages.

2) Check the resistance between the terminals of

secondary air combination valve RH.

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

air is blown into (A).

4) Connect the battery positive terminal to the ter-

minal No. 2 and the battery negative terminal to the

terminal No. 1. Check that air is discharged from

(B), when supplying air to (A).

3. OTHER INSPECTIONS

1) Check that the secondary air pipe has no defor-

mation, cracks or other damages.

2) Check that the air duct has no cracks, damage

or loose part.

Terminal No.

Standard

1 and 2

5.0±0.5 Ω (when 20°C (68°F))

2 1

EC-02428

EC-02478

(A)

(B)

EC-02479

2 1

(A)

(B)

INTAKE (INDUCTION)

IN(STI)

Page

1.

General Description . . . . . . . . . . . . . . . . . . . . ...2

2.

Air Cleaner Element . . . . . . . . . . . . . . . . . . . . ...7

3.

Air Cleaner Case . . . . . . . . . . . . . . . . . . . . . . 8

4.

Air Intake Duct . . . . . . . . . . . . . . . . . . . . . . ..10

5.

Intake Duct . . . . . . . . . . . . . . . . . . . . . . . ...11

6.

Intercooler . . . . . . . . . . . . . . . . . . . . . . . . 12

7.

Turbocharger . . . . . . . . . . . . . . . . . . . . . . . 15

8.

Air By-pass Valve . . . . . . . . . . . . . . . . . . . . . .19

9.

Resonator Chamber . . . . . . . . . . . . . . . . . . . . .20