SUBARU TRIBECA 2009 1.G Service Workshop Manual

FU(H6DO)-20
Knock Sensor
FUEL INJECTION (FUEL SYSTEMS)
7. Knock Sensor
A: REMOVAL
1) Remove the collector cover.
2) Disconnect the ground cable from battery.
3) Remove the intake manifold.
<Ref. to FU(H6DO)-12, REMOVAL, Intake Mani-
fold.>
4) Disconnect the knock sensor connector.
5) Remove the knock sensor from cylinder block.
B: INSTALLATION
1) Install the knock sensor to cylinder block.
Tightening torque:
25 N·m (2.5 kgf-m, 18 ft-lb)
NOTE:
For the knock sensor installation angle, refer to the
figure below.
2) Connect the knock sensor connector.
3) Install the intake manifold. <Ref. to FU(H6DO)-
13, INSTALLATION, Intake Manifold.>
4) Connect the battery ground cable to the battery.
5) Install the collector cover.
(A) Front side of vehicle
FU-00577
45˚30˚10˚
(A)FU-00578

FU(H6DO)-21
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(H6DO)-11, REMOVAL,
Throttle Body.> <Ref. to FU(H6DO)-11, INSTAL-
LATION, Throttle Body.>

FU(H6DO)-22
Manifold Absolute Pressure Sensor
FUEL INJECTION (FUEL SYSTEMS)
9. 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 intake manifold.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
6.4 N·m (0.65 kgf-m, 4.7 ft-lb)
FU-02131
(B)(A)

FU(H6DO)-23
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 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-02143
FU-02764

FU(H6DO)-24
Fuel Injector
FUEL INJECTION (FUEL SYSTEMS)
11.Fuel Injector
A: REMOVAL
1. RH SIDE
1) Remove the collector cover.
2) Release the fuel pressure. <Ref. to FU(H6DO)-
37, RELEASING OF FUEL PRESSURE, PROCE-
DURE, Fuel.>
3) Disconnect the ground cable from battery.
4) Open the fuel filler flap lid, and remove the fuel
filler cap.
5) Remove the air cleaner case. <Ref. to
IN(H6DO)-5, REMOVAL, Air Cleaner Case.>
6) Remove the fuel pipe protector RH.
7) Disconnect the connector from fuel injector.
8) Remove the engine harness from fuel injector
pipe RH.
9) Remove the bolt which holds fuel injector pipe
onto intake manifold.
10) Remove the fuel injector while lifting up the fuel
injector pipe.
2. LH SIDE
1) Remove the collector cover.
2) Release the fuel pressure. <Ref. to FU(H6DO)-
37, RELEASING OF FUEL PRESSURE, PROCE-
DURE, Fuel.>
3) Remove the battery.
4) Open the fuel filler flap lid, and remove the fuel
filler cap.
5) Remove the generator harness from fuel pipe
protector LH.
6) Remove the fuel pipe protector LH.
7) Disconnect the connector from fuel injector.
8) Remove the engine harness from fuel injector
pipe LH.
9) Remove the bolt which holds fuel injector pipe
onto intake manifold.
10) Remove the fuel injector while lifting up the fuel
injector pipe.
FU-02119
FU-02134
FU-02120
FU-02117
FU-02135
FU-02118

FU(H6DO)-25
Fuel Injector
FUEL INJECTION (FUEL SYSTEMS)
B: INSTALLATION
1. RH SIDE
Install in the reverse order of removal.
NOTE:
Use new O-rings.
Tightening torque:
19 N·m (1.9 kgf-m, 14 ft-lb)
Tightening torque:
19 N·m (1.9 kgf-m, 14 ft-lb)
2. LH SIDE
Install in the reverse order of removal.
NOTE:
Use new O-rings.
Tightening torque:
19 N·m (1.9 kgf-m, 14 ft-lb)
Tightening torque:
19 N·m (1.9 kgf-m, 14 ft-lb)FU-02120
FU-02119
FU-02118
FU-02117

FU(H6DO)-26
Variable Valve Lift Diagnosis Oil Pressure Switch
FUEL INJECTION (FUEL SYSTEMS)
12.Variable Valve Lift Diagnosis
Oil Pressure Switch
A: REMOVAL
1) Remove the collector cover.
2) Disconnect the ground cable from battery.
3) Remove the air intake chamber. <Ref. to
IN(H6DO)-6, REMOVAL, Air Intake Chamber.>
4) Disconnect the connector from variable valve lift
diagnosis oil pressure switch.
5) Remove the variable valve lift diagnosis oil pres-
sure switch.
•LH side
•RH side
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Apply liquid gasket to variable valve lift diagnosis
oil pressure switch threads.
Liquid gasket:
THREE BOND 1324 (Part No. 004403042) or
equivalent
Tightening torque:
17 N·m (1.7 kgf-m, 12.5 ft-lb)
FU-02136
FU-02137

FU(H6DO)-27
Oil Temperature Sensor
FUEL INJECTION (FUEL SYSTEMS)
13.Oil Temperature Sensor
A: REMOVAL
1) Remove the collector cover.
2) Disconnect the ground cable from battery.
3) Remove the air intake chamber. <Ref. to
IN(H6DO)-6, REMOVAL, Air Intake Chamber.>
4) Disconnect the connector from oil temperature
sensor.
5) Remove the oil temperature sensor.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
FU-02138

FU(H6DO)-28
Front Oxygen (A/F) Sensor
FUEL INJECTION (FUEL SYSTEMS)
14.Front Oxygen (A/F) Sensor
A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Lift-up the vehicle.
4) Disconnect the connector of front oxygen (A/F)
sensor.
•LH side
•RH side
5) Apply spray-type lubricant to the threaded por-
tion of front oxygen (A/F) sensor, and leave it for
one minute or more.
6) Remove the front oxygen (A/F) sensor.
CAUTION:
When removing the front oxygen (A/F) sensor,
wait until exhaust pipe cools, otherwise it will
damage the exhaust pipe.
•LH side
•RH side
B: INSTALLATION
1) Before installing front oxygen (A/F) sensor, ap-
ply anti-seize compound only to the threaded por-
tion of front oxygen (A/F) sensor to make the next
removal easier.
Anti-seize compound:
NEVER-SEEZ NS-165 or the equivalent
CAUTION:
Never apply anti-seize compound to the protec-
tor of front oxygen (A/F) sensor.
2) Install the front oxygen (A/F) sensor.
Tightening torque:
21 N·m (2.1 kgf-m, 15.2 ft-lb)
•LH side
•RH side
FU-02139
FU-02140
FU-02141
FU-02142
FU-02141
FU-02142

FU(H6DO)-29
Front Oxygen (A/F) Sensor
FUEL INJECTION (FUEL SYSTEMS)
3) Connect the connector of front oxygen (A/F)
sensor.
•LH side
•RH side
4) Lower the vehicle.
5) Connect the battery ground cable to the battery.
FU-02139
FU-02140