Subaru Legacy IV (2008 year). Manual - part 238

FU(H4DOTC)-55

Electronic Throttle Control Relay

FUEL INJECTION (FUEL SYSTEMS)

24.Electronic Throttle Control 

Relay

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the glove box. <Ref. to EI-52, REMOV-
AL, Glove Box.>
3) Remove the harness cover (A).

4) Disconnect the connector from electronic throttle
control relay.

B: INSTALLATION

Install in the reverse order of removal.

IN-00203

FU-02092

(A)

FU-02095

FU(H4DOTC)-56

Fuel Pump Control Unit

FUEL INJECTION (FUEL SYSTEMS)

25.Fuel Pump Control Unit

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the rear quarter trim of the left side.
(Wagon model) <Ref. to EI-63, REMOVAL, Rear
Quarter Trim.>
3) Peel the trunk side trim of the left side. (Sedan
model)
4) Remove the fuel pump control unit.
• Wagon model

• Sedan model

5) Disconnect the connector from fuel pump control
unit.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

5 N·m (0.5 kgf-m, 3.7 ft-lb)

IN-00203

FU-03220

FU-03231

FU(H4DOTC)-57

Fuel

FUEL INJECTION (FUEL SYSTEMS)

26.Fuel

A: PROCEDURE

1. RELEASING OF FUEL PRESSURE

WARNING:
Place “NO OPEN FLAMES” signs near the
working area.

CAUTION:
Be careful not to spill fuel.
1) Remove the fuse of fuel pump from main fuse
box.

2) Start the engine and run it until it stalls.
3) After the engine stalls, crank it for five more sec-
onds.
4) Turn the ignition switch to OFF.
5) Install the fuse of fuel pump to the main fuse box.

2. DRAINING FUEL 
(WITH SUBARU SELECT MONITOR)

WARNING:
Place “NO OPEN FLAMES” signs near the
working area.

CAUTION:
Be careful not to spill fuel.

NOTE:
• If the fuel pump cannot be actuated, refer to
DRAINING FUEL (THROUGH THE FUEL FILLER
HOSE). <Ref. to FU(H4DOTC)-57, DRAINING
FUEL (THROUGH THE FUEL FILLER HOSE),
PROCEDURE, Fuel.>
• Be careful not to let the battery run-out.
1) Release the fuel pressure. <Ref. to
FU(H4DOTC)-57, RELEASING OF FUEL PRES-
SURE, PROCEDURE, Fuel.>

2) Attach ST to the fuel delivery pipe and push ST
in the direction of arrow mark to disconnect the fuel
delivery hose.
ST

42099AE000

QUICK CONNECTOR 
RELEASE

CAUTION:
• Be careful not to spill fuel.
• Catch the fuel from hoses using a container
or cloth.

3) Connect ST to the fuel delivery hose.
ST

18471AA000

FUEL PIPE ADAPTER

4) Connect the gasoline proof hose to ST and put
the end of the hose in the container.
5) Drive the fuel pump and drain the fuel using Sub-
aru Select Monitor. <Ref. to EN(H4DOTC)(diag)-
55, FUEL PUMP CONTROL (ON/OFF DRIVE),
OPERATION, System Operation Check Mode.>

CAUTION:
Be careful not to spill fuel.

3. DRAINING FUEL (THROUGH THE FUEL 
FILLER HOSE)

WARNING:
Place “NO OPEN FLAMES” signs near the
working area.

CAUTION:
• Be careful not to spill fuel.
• Fuel may remain in the fuel filler pipe. Drain-
ing the fuel from the fuel filler pipe through the
fill opening using the gasoline proof pump and
the gasoline proof hose (ø10 or less) before the
operation.
1) Set the vehicle on a lift.
2) Lift up the vehicle.
3) Remove the rear exhaust pipe and muffler.
<Ref. to EX(H4DOTC)-12, REMOVAL, Rear Ex-
haust Pipe.> <Ref. to EX(H4DOTC)-14, REMOV-
AL, Muffler.>
4) Open the fuel filler lid, and remove the fuel filler
cap.

FU-01122

(A) Fuel delivery hose

(B) Fuel return hose

(C) Evaporation hose

FU-03095

(A)

(B)

(C)

ST

FU(H4DOTC)-58

Fuel

FUEL INJECTION (FUEL SYSTEMS)

5) Drain the fuel from the fuel filler pipe through the
fill opening using the gasoline proof pump and the
gasoline proof hose (ø10 or less).
6) Disconnect the fuel filler hose (A) from the fuel
filler pipe.

CAUTION:
• Be careful not to spill fuel.
• Catch the fuel from hoses using a container
or cloth.

7) Set the container under the vehicle and insert
the gasoline proof hose (ø10 or less) into the fuel
filler hose to drain the fuel.

CAUTION:
Be careful not to spill fuel.

(A) Fuel filler hose

(B) Evaporation hose

(A)

FU-02394

(B)