Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 48

EC(STI)-6

Rear Catalytic Converter

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

3. Rear Catalytic Converter

A: REMOVAL

The rear catalytic converter is integrated into the

center exhaust pipe (rear). Refer to “Center Ex-

haust Pipe” for removal procedures. <Ref. to

EX(STI)-8, REMOVAL, Center Exhaust Pipe.>

B: INSTALLATION

The rear catalytic converter is integrated into the

center exhaust pipe (rear). Refer to “Center Ex-

haust Pipe” for installation procedures. <Ref. to

EX(STI)-9, INSTALLATION, Center Exhaust

Pipe.>

C: INSPECTION

1) Check the connections and welds for exhaust

leaks.

2) Make sure there are no holes or rusting.

EC(STI)-7

Canister

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

4. Canister

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Open the trunk, and remove the trunk room mat.

(4 door model)

3) Open the rear gate, and remove the luggage

floor mat. (5 door model)

4) Tilt the rear seat backrest forward.

5) Remove the sub trunk box and spacers. (4 door

model)

6) Remove the luggage floor box and spacers. (5

door model)

7) Remove the center canister cover.

8) Remove the canister cover RH.

9) Disconnect the purge tube (A), vent tube (B),

drain tube A (C) and PCV drain tube (D).
NOTE:

Disconnect the quick connector as shown in the fig-

ure.

10) Remove the canister.

IN-00203

EC-02972

EC-02973

(a) Retainer

EC-02281

(a)

(a)

(a)

EC-02974

(B)

(C)

(A)

(D)

EC-02975

EC(STI)-8

Canister

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

11) Remove the canister cover LH.

12) Disconnect drain tube A (A) and drain tube B

(B).
NOTE:

Disconnect the quick connector as shown in the fig-

ure.

13) Disconnect the connector (A) from leak check

valve assembly, and remove the leak check valve

assembly.

14) Remove the clip (A), which secures the leak

check valve assembly harness, from the valve

bracket, and remove the valve bracket.

(a) Retainer

EC-02976

EC-02281

(a)

(a)

(a)

EC-02977

(A)

(B)

EC-02978

(A)

EC-02979

(A)

EC(STI)-9

Canister

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

15) Disconnect purge tube (A) and vent tube (B).
NOTE:

Disconnect the quick connector as shown in the fig-

ure.

16) Remove purge tube (A), vent tube (B), and

drain tube A (C).

B: INSTALLATION

Install in the reverse order of removal while being

careful of the following.

• Connect the quick connector as shown in the fig-

ure.
CAUTION:

• Check that there is no damage or dust on the

quick connector. If necessary, clean the seal

surface of the pipe.

• When connecting the quick connector, se-

curely insert the pipe all the way before locking

the retainer.

• When it is difficult to lock the retainer, make

sure that the pipe is securely inserted.

• Make sure that the quick connector is secure-

ly connected.

(a) Retainer

EC-02281

(a)

(a)

(a)

EC-02980

(B)

(A)

EC-02981

(C)

(A)

(B)

(a) Retainer

EC-02295

(a)

(a)

(a)