Subaru Legacy (2005 year). Manual - part 250

FU(H4DOTC)-25

FUEL INJECTION (FUEL SYSTEMS)

Knock Sensor

7. Knock Sensor

A: REMOVAL

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Remove the intercooler. <Ref. to IN(H4DOTC)-
12, REMOVAL, Intercooler.>
4) Disconnect the knock sensor connector.

5) Remove the knock sensor from cylinder block.

B: INSTALLATION

1) Install the knock sensor to cylinder block.

NOTE:
Extraction area of knock sensor cord must be posi-
tioned at a 60

° angle relative to the engine rear.

Tightening torque:

24 N

⋅

m (2.4 kgf-m, 17.7 ft-lb)

2) Connect the knock sensor connector.

3) Install the intercooler.
<Ref. to IN(H4DOTC)-12, INSTALLATION, Inter-
cooler.>
4) Connect the ground cable to battery.

5) Install the collector cover.

IN-00203

FU-01164

FU-00519

(A) Front side

FU-00413

(A)

60

FU-01164

IN-00203

FU(H4DOTC)-26

FUEL INJECTION (FUEL SYSTEMS)

Throttle Position Sensor

8. Throttle Position Sensor

A: SPECIFICATION

Throttle body is a non-disassembled part, so do not
remove the throttle position sensor from throttle
body.
Refer to “Throttle Body” for removal and installation
procedures. <Ref. to FU(H4DOTC)-11, REMOV-
AL, Throttle Body.> <Ref. to FU(H4DOTC)-11, IN-
STALLATION, Throttle Body.>

FU(H4DOTC)-27

FUEL INJECTION (FUEL SYSTEMS)

Mass Air Flow and Intake Air Temperature Sensor

9. Mass Air Flow and Intake Air 

Temperature Sensor

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Disconnect the connector from mass air flow and
intake air temperature sensor.
3) Remove the mass air flow and intake air temper-
ature sensor.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

1 N

⋅

m (0.1 kgf-m, 0.7 ft-lb)

IN-00203

FU-01187

FU(H4DOTC)-28

FUEL INJECTION (FUEL SYSTEMS)

Manifold Absolute Pressure Sensor

10.Manifold Absolute Pressure 

Sensor

A: REMOVAL

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Disconnect the connector from manifold abso-
lute pressure sensor (A), and remove the filter as-
sembly (B) from intake manifold.
4) Remove the manifold absolute pressure sensor
from solenoid valve bracket.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

6.5 N

⋅

m (0.66 kgf-m, 4.8 ft-lb)

IN-00203

(A)

FU-01188

(B)