Subaru Legacy IV (2008 year). Manual - part 454

FU(H6DO)-35

Rear Oxygen Sensor

FUEL INJECTION (FUEL SYSTEMS)

B: INSTALLATION

CAUTION:
If lubricant is spilt onto the exhaust pipe, wipe it
off with cloth to avoid emission of smoke or
causing a fire.
1) Before installing rear oxygen sensor, apply the
anti-seize compound only to the threaded portion of
rear oxygen sensor to make the next removal eas-
ier.

CAUTION:
Never apply anti-seize compound to the protec-
tor of rear oxygen sensor.

Anti-seize compound:

NEVER-SEEZ NSN, JET LUBE SS-30 or 
equivalent

2) Install the rear oxygen sensor.

Tightening torque:

21 N·m (2.1 kgf-m, 15.5 ft-lb)

• LH  side

• RH side

3) Hold the harness with clip.

4) Connect the connector to rear oxygen sensor.
• LH  side

• RH  side

5) Lower the vehicle.
6) Connect the ground cable to battery.

FU-02145

FU-02146

FU-02143

FU-02144

IN-00203

FU(H6DO)-36

SI-DRIVE (SUBARU Intelligent Drive) Selector

FUEL INJECTION (FUEL SYSTEMS)

17.SI-DRIVE (SUBARU Intelligent 

Drive) Selector

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the console box. <Ref. to EI-52, RE-
MOVAL, Glove Box.>
3) Disconnect the SI-DRIVE selector connector.

4) Remove the screws which secure the SI-DRIVE
selector to the console box.

5) Disconnect the connector from SI-DRIVE selec-
tor cover, and remove the SI-DRIVE selector.

B: INSTALLATION

Install in the reverse order of removal.

C: INSPECTION

Measure the resistance between SI-DRIVE selec-
tor terminals.

IN-00203

FU-04006

FU-04007

FU-04008

Switch position

Terminal No.

Standard value

Sport 

(when turning the SI-

DRIVE selector to the left)

2 and 3

Less than 10 

:

Intelligent 

(when pushing the SI-

DRIVE selector)

0.8 — 1.2 k

:

Sport Sharp 

(when turning the SI-

DRIVE selector to the right)

2.14 — 3.2 k

:

FU-03123

2

3

4

1

5

FU(H6DO)-37

SI-DRIVE (SUBARU Intelligent Drive) S# Switch

FUEL INJECTION (FUEL SYSTEMS)

18.SI-DRIVE (SUBARU Intelligent 

Drive) S# Switch

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the airbag module. <Ref. to AB-14, RE-
MOVAL, Driver’s Airbag Module.>

WARNING:
Always refer to “Airbag System” before per-
forming service on the airbag modules. <Ref. to
AB-4, CAUTION, General Description.>
3) Remove the screws which secure the SI-DRIVE
S# switch to the steering wheel, and remove the SI-
DRIVE S# switch.

4) Disconnect the connectors from the SI-DRIVE
S# switch.

B: INSTALLATION

Install in the reverse order of removal.

C: INSPECTION

Measure the resistance between SI-DRIVE S#
switch terminals.

IN-00203

FU-03122

Switch position

Terminal No.

Standard value

ON (When the SI-DRIVE 

S# switch is pressed)

3 and 4

Less than 10 

:

OFF

1 M

: or more

2

3

4

1

FU-03121

FU(H6DO)-38

Engine Control Module (ECM)

FUEL INJECTION (FUEL SYSTEMS)

19.Engine Control Module (ECM)

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the lower inner trim of passenger’s
side. <Ref. to EI-61, REMOVAL, Lower Inner
Trim.>
3) Detach the floor mat of passenger’s seat.
4) Remove the protect cover.

5) Remove the nuts and bolts which hold the ECM
to the bracket.
6) Remove the clip (A) from bracket.

7) Disconnect the ECM connectors, and take out
the ECM.

B: INSTALLATION

Install in the reverse order of removal.

CAUTION:
When the ECM of model with immobilizer has
been replaced, be sure to perform the registra-
tion of immobilizer system. (Refer to the “PC
application help for Subaru Select Monitor”.)

NOTE:
When replacing the ECM, be careful not to use the
wrong spec. ECM to avoid any damage on the fuel
injection system.

Tightening torque:

7.5 N·m (0.8 kgf-m, 5.5 ft-lb)

IN-00203

FU-02090

(A)

FU-02488