Subaru Legacy IV (2008 year). Service manual — part 34
FU(H4SO)-25
Knock Sensor
FUEL INJECTION (FUEL SYSTEMS)
7. Knock Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the air intake chamber. <Ref. to
IN(H4SO)-7, REMOVAL, Air Intake Chamber.>
3) Disconnect the knock sensor connector.
4) Remove the knock sensor from the cylinder
block.
B: INSTALLATION
1) Install the knock sensor to the 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 air intake chamber. <Ref. to
IN(H4SO)-7, INSTALLATION, Air Intake Cham-
ber.>
4) Connect the ground cable to battery.
IN-00203
FU-03386
FU-02726
(A) Front side
(A)
60
FU-02727
FU-03386
IN-00203
FU(H4SO)-26
Throttle Position Sensor
FUEL INJECTION (FUEL SYSTEMS)
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
procedure. <Ref. to FU(H4SO)-12, REMOVAL,
Throttle Body.> <Ref. to FU(H4SO)-12, INSTAL-
LATION, Throttle Body.>
FU(H4SO)-27
Manifold Absolute Pressure Sensor
FUEL INJECTION (FUEL SYSTEMS)
9. Manifold Absolute Pressure
Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from the manifold ab-
solute pressure sensor and remove the manifold
absolute pressure sensor from throttle body.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Use new O-rings.
Tightening torque:
2 N·m (0.2 kgf-m, 1.5 ft-lb)
IN-00203
FU-03921
FU(H4SO)-28
Mass Air Flow and Intake Air Temperature Sensor
FUEL INJECTION (FUEL SYSTEMS)
10.Mass Air Flow and Intake Air
Temperature Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from the mass air flow
and intake air temperature sensor, and remove the
mass air flow and intake air temperature 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-01106
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