Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 143
EC(w/o STI)-5
Front Catalytic Converter
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
2. Front Catalytic Converter
A: REMOVAL
The front catalytic converter is integrated into the
center exhaust pipe (front). Refer to “Center Ex-
haust Pipe” for removal procedures. <Ref. to
EX(STI)-8, REMOVAL, Center Exhaust Pipe.>
B: INSTALLATION
The front catalytic converter is integrated into the
center exhaust pipe (front). Refer to “Center Ex-
haust Pipe” for installation procedures. <Ref. to
EX(STI)-9, INSTALLATION, Center Exhaust
C: INSPECTION
1) Check the connections and welded parts for ex-
haust leaks.
2) Make sure there are no holes or rusting.
EC(w/o 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
C: INSPECTION
1) Check the connections and welded parts for ex-
haust leaks.
2) Make sure there are no holes or rusting.
EC(w/o 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(w/o 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)
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