Page 1969 of 2870
FU(H4DOTC 2.5)-39
FUEL INJECTION (FUEL SYSTEM)
Rear Oxygen Sensor
3) Connect the connector to the rear oxygen sensor.
4) Connect the clip to the crossmember.
AT model
MT model
5) Lower the vehicle.
6) Connect the battery ground cable to battery.
FU-00081
FU-01311
FU-01312
FU-00009
Page 1970 of 2870

FU(H4DOTC 2.5)-40
FUEL INJECTION (FUEL SYSTEM)
Exhaust Temperature Sensor
16.Exhaust Temperature Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the joint pipe.
13, REMOVAL, Joint Pipe.>
3) Apply SUBARU CRC or its equivalent to the thread-
ed portion of exhaust temperature sensor, and leave it
for 1 minute or more.
SUBARU CRC (Part No. 004301003)
4) Remove the exhaust temperature sensor.
CAUTION:
When removing the exhaust temperature sen-
sor, wait until the exhaust pipe cools, otherwise
it will damage exhaust pipe.
B: INSTALLATION
1) Before installing the exhaust temperature sen-
sor, apply anti-seize compound only to the thread-
ed portion of exhaust temperature sensor to make
the next removal easier.
CAUTION:
Never apply anti-seize compound to the protec-
tor of exhaust temperature sensor.
Anti-seize compound:
SS-30 JET LUBE
2) Install the exhaust temperature sensor.
NOTE:
Align the harness (A) of exhaust temperature sen-
sor to the marking (B) of joint pipe, and tighten the
screws.
Tightening torque:
21 N·m (2.1 kgf-m, 15.2 ft-lb)
3) Install the joint pipe.
INSTALLATION, Joint Pipe.>
4) Connect the battery ground cable to battery.
FU-00009
FU-00372
FU-01018
(A)
(B)
FU-00009
Page 1971 of 2870
FU(H4DOTC 2.5)-41
FUEL INJECTION (FUEL SYSTEM)
Engine Control Module (ECM)
17.Engine Control Module (ECM)
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the lower inner trim of the passenger
side.
3) Detach the floor mat of the front passenger seat.
4) Remove the protect cover.
5) Remove the nuts (A) which hold ECM to the
bracket.
6) Remove the clip (B) from the bracket.
7) Disconnect the ECM connectors and take out
the ECM.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
When replacing ECM, be careful not to use the
wrong spec. ECM to avoid any damage to the fuel
injection system.
FU-00009
FU-01029
(A)
(A)
(B)
FU-00316
Page 1972 of 2870
FU(H4DOTC 2.5)-42
FUEL INJECTION (FUEL SYSTEM)
Main Relay
18.Main Relay
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the glove box.
AL, Glove Box.>
3) Remove the bolt which holds the main relay
bracket on the body.
4) Disconnect the connectors from the main relay.
B: INSTALLATION
Install in the reverse order of removal.
FU-00009
FU-00317
Page 1973 of 2870
FU(H4DOTC 2.5)-43
FUEL INJECTION (FUEL SYSTEM)
Fuel Pump Relay
19.Fuel Pump Relay
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the glove box.
AL, Glove Box.>
3) Remove the bolt which holds fuel pump relay
bracket on the body.
4) Disconnect the connector from the fuel pump re-
lay.
5) Remove the fuel pump relay from the mounting
bracket.
B: INSTALLATION
Install in the reverse order of removal.
FU-00009
FU-00262
Page 1974 of 2870
FU(H4DOTC 2.5)-44
FUEL INJECTION (FUEL SYSTEM)
Fuel Pump Control Unit
20.Fuel Pump Control Unit
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the rear quarter trim.
MOVAL, Rear Quarter Trim.>
3) Disconnect the connector from the fuel pump con-
trol unit.
4) Remove the fuel pump control unit.
B: INSTALLATION
Install in the reverse order of removal.
FU-00009
FU-00088
Page 1975 of 2870
FU(H4DOTC 2.5)-45
FUEL INJECTION (FUEL SYSTEM)
Fuel
21.Fuel
A: OPERATION
1. RELEASING OF FUEL PRESSURE
WARNING:
Place “NO FIRE” signs near the working area.
Be careful not to spill fuel on the floor.
1) Disconnect the connector from fuel pump relay.
2) Start the engine and run it until it stalls.
3) After the engine stalls, crank it for 5 more seconds.
4) Turn the ignition switch to OFF.
2. DRAINING FUEL
WARNING:
Place “NO FIRE” signs near the working area.
Be careful not to spill fuel on the floor.
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Open the fuel filler flap lid and remove fuel filler
cap.
4) Lift-up the vehicle.5) Drain fuel from the fuel tank.
Set a container under the vehicle and remove the
drain plug from fuel tank.
6) Tighten the fuel drain plug.
Tightening torque:
26 N·m (2.7 kgf-m, 19.2 ft-lb)
FU-00262
FU-00009
FU-00089
FU-00089
Page 1976 of 2870

FU(H4DOTC 2.5)-46
FUEL INJECTION (FUEL SYSTEM)
Fuel Tank
22.Fuel Tank
A: REMOVAL
WARNING:
Place “NO FIRE” signs near the working area.
Be careful not to spill fuel on the floor.
1) Set the vehicle on a lift.
2) Release the fuel pressure.
FUEL PRESSURE, OPERATION, Fuel.>
3) Drain fuel from the fuel tank.
OPERATION, Fuel.>
4) Remove the rear seat.
5) Disconnect the connector (A) of fuel tank cord to
rear harness.
6) Push the grommet (B) which holds fuel tank cord
on floor panel into under the body.
7) Remove the rear crossmember.
REMOVAL, Rear Crossmember.>
8) Disconnect the two-way valve hose (A) from
two-way valve and disconnect the canister hose (B)
from canister.9) Loosen the clamp and disconnect the fuel filler
hose and air vent hose from fuel filler pipe.
10) Move the clips, and disconnect quick connec-
tor.
Delivery, Return and Evaporation Lines.>
11) Disconnect the fuel hoses.
12) Support the fuel tank with transmission jack,
and remove the bolts from bands and dismount fuel
tank from the vehicle.
WARNING:
A helper is required to perform this work.
B: INSTALLATION
1) Support the fuel tank with transmission jack and
push the fuel tank harness into access hole with
grommet.
(B)
(A)
FU-00090
(A)
(B)
FU-00091
FU-00092
FU-00093
FU-00411