fuel pressure SUBARU TRIBECA 2009 1.G Service Workshop Manual

IDI-2
General Description
INSTRUMENTATION/DRIVER INFO
1. General Description
A: SPECIFICATION
Combination meter
SpeedometerStepping motor typeTa c h o m e t e r
Malfunction indicator light
LED
Oil pressure warning light
ABS warning light
Airbag warning light
Seat belt warning light
Brake fluid and parking brake warning light
Low fuel warning light
Charge warning light
AT F t e m p e r a t u r e w a r n i n g l i g h t
AW D war n in g l i gh t
Tire pressure warning light
Low washer fluid warning light
Rear differential oil temperature warning light
Ve h i c l e d y n a m i c s c o n t r o l ( V D C ) w a r n i n g l i g h t
Ve h i c l e d y n a m i c s c o n t r o l ( V D C ) i n d i c a t o r l i g h t
Tu r n s i g n a l i n d i c a t o r l i g h t
HI-beam indicator light
Cruise indicator light
Cruise set indicator light
Fr o nt fog li g ht i nd i ca to r li g ht
SPORT indicator light
Light illumination indicator light
Meter illumination light
LCD back light
Engine coolant temperature gauge
LCDFuel gauge
AT s e l e c t l e v e r p o s i t i o n i n d i c a t o r l a m p , s p o r t s s h i f t i n d i c a t o r
Odo/Trip indicator
Wa r ni n g b ox
Door open warning light
LEDSecurity indicator
Passenger’s seat airbag indicator
Passenger’s seat belt war ning light

LI-11
Headlight Assembly
LIGHTING SYSTEM
10.Headlight Assembly
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the air intake duct.
3) Remove the engine front cover.
4) Disengage the three clips, and then turn over the
mud guard.
5) Remove the three bolts securing the headlight
assembly from the lower side of vehicle.
6) Remove the two bolts and then remove the
headlight assembly.
7) Disconnect the connector and then detach the
rear headlight assembly.
B: INSTALLATION
Install in the reverse order of removal.
C: ADJUSTMENT
1. HEADLIGHT AIMING
NOTE:
Aiming of this headlight can be adjusted only in the
vertical direction. It cannot be adjusted in the hori-
zontal direction.
CAUTION:
Turn off the light before adjusting the headlight
beam level. If it is necessary to inspect the
beam level, do not turn on the lamp for more
than two minutes.
NOTE:
Before checking the headlight beam level, be sure
of the following:
•Check the area around the headlight for any
scratches, damage or other type of deformation.
•Make sure that the vehicle is parked on a level
surface.
•Make sure that the inflation pressure of tires are
correct.
•Check that the vehicle fuel tank is full.
1) Bounce the vehicle several times to normalize
the suspension.
2) Make certain that someone is seated in the driv-
er's seat.
IN-02134
CO-02176
LI-00503
LI-00504

CO(H6DO)-30
Engine Cooling System Trouble in General
COOLING
12.Engine Cooling System Trouble in General
A: INSPECTION
Tr o u b l e P o s s i b l e c a u s e C o r r e c t i v e a c t i o n
Overheating
a. Insufficient engine coolantReplenish engine coolant, inspect for leakage, and
repair it if necessary.
b. De fe c ti ve t he r mo st a t Rep la c e.
c. Malfunction of water pump Replace.
d. Clogged engine coolant passage Clean.
e. Improper ignition timing
Inspect and repair ignition control system. EN(H6DO)(diag)-2, PROCEDURE, Basic Diagnostic
Procedure.>
f. Clogged or leaking radiator Clean, repair or replace.
g. Improper engine oil in engine coolant Replace engine coolant.
h. Air/fuel mixture ratio too lean
Inspect and repair the fuel injection system. EN(H6DO)(diag)-2, PROCEDURE, Basic Diagnostic
Procedure.>
i. Excessive back pressure in exhaust system Clean or replace.
j. Insufficient clearance between piston and cylinder Adjust or replace.
k. Slipping clutch Correct or replace.
l. Dragging brake Adjust.
m. Faulty transmission gear oil Replace.
n. Malfunction of radiator fanInspect the radiator fan relay, engine coolant tempera-
ture sensor or fan motor and replace them.
Over-coolinga. Ambient temperature extremely low Partly cover radiator front area.
b. De fe c ti ve t he r mo st a t Rep la c e.
Engine coolant
leaks
a. Loosened or damaged connecting units on hoses Correct or replace.
b. L ea k ag e f r o m wat e r pu mp Rep la c e.
c. Leakage from water pipe Correct or replace.
d. Leakage around cylinder head gasket Retighten cylinder head bolts or replace gasket.
e. Damaged or cracked cylinder head and crankcase Correct or replace.
f. Damaged or cracked ther mostat case Correct or replace.
g. Leakage from radiator Correct or replace.
Strange noise
a. Defective drive belt Replace.
b. De fe c ti ve ra di a t or fan Rep la c e.
c. Defective water pump bearing Replace water pump.
d. Defective water pump mechanical seal Replace water pump.

EC(H6DO)-10
Fuel Tank Pressure Sensor
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
9. Fuel Tank Pressure Sensor
A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Open the fuel filler flap lid, and remove the fuel
filler cap.
4) Lift-up the vehicle.
5) Disconnect the connector from fuel tank pres-
sure sensor.
6) Disconnect the hose from the fuel tank pressure
sensor.
7) Remove the fuel tank pressure sensor along
with the bracket.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
7.4 N·m (0.75 kgf-m, 5.4 ft-lb)
C: INSPECTION
Make sure the hoses are not cracked or loose.

EN(H6DO)(diag)-4
Check List for Interview
ENGINE (DIAGNOSTICS)
2. CHECK LIST No. 2
Check the following item about the vehicle's state when malfunction indicator light turns on.
NOTE:
Use copies of this page for interviewing customers.
a) Other warning lights or indicators turn on. Yes/ No
Low fuel warning light
Charge indicator light
AT diagnostic indicator light
ABS warning light
Oil pressure indicator light
b) Fuel level
•Lack of gasoline: Yes/ No
•Indicator position of fuel gauge:
•Experienced running out of fuel: Yes/ No
c) Intentional connecting or disconnecting of harness connectors or spark plug cords: Yes/ No
•What:
d) Intentional connecting or disconnecting of hoses: Yes/ No
•What:
e) Installing of parts other than genuine parts: Yes/ No
•What:
•Where:
f) Occurrence of noise: Yes/ No
•From where:
•What kind:
g) Occurrence of smell: Yes/ No
•From where:
•What kind:
h) Intrusion of water into engine compartment or passenger compartment: Yes/ No
i) Troubles occurred
Engine does not start.
Engine stalls during idling.
Engine stalls while driving.
Engine speed decreases.
Engine speed does not decrease.
Rough idling
Poor acceleration
Back fire
After fire
No shift
Excessive shift shock

EN(H6DO)(diag)-5
General Description
ENGINE (DIAGNOSTICS)
3. General Description
A: CAUTION
1) Airbag system wiring harness is routed near the
ECM, main relay and fuel pump relay.
CAUTION:
•All airbag system wiring harnesses and con-
nectors are colored yellow. Do not use electri-
cal test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the ECM, TCM,
main relay and fuel pump relay.
2) Never connect the battery in reverse polarity.
•The ECM will be destroyed instantly.
•The fuel injector and other parts will be dam-
aged.
3) Do not disconnect the battery terminals while the
engine is running.
A large counter electromotive force will be generat-
ed in the generator, and this voltage may damage
electronic parts such as ECM etc.
4) Before disconnecting the connectors of each
sensor and ECM, be sure to turn the ignition switch
to OFF. Perform the clear memory mode after con-
necting the connectors.
5) Poor contact has been identified as a primary
cause of this problem. Measure the voltage or re-
sistance of individual sensor or all electrical control
modules using a tapered pin with a diameter of less
than 0.64 mm (0.025 in). Do not insert the pin more
than 5 mm (0.20 in) into the part.
6) Remove the ECM from the located position after
disconnecting two cables on battery.
Otherwise, the ECM may be damaged.
CAUTION:
When replacing the ECM, be careful not to use
the wrong spec. ECM to avoid any damage on
the fuel injection system.
7) Connectors of each sensor in the engine com-
partment and the harness connectors on the en-
gine side and body side are all designed to be
waterproof. Even if the connectors are waterproof,
take care not to allow water to get into them when
washing the vehicle, or when servicing the vehicle
in rainy weather.
8) Use ECM mounting stud bolts as the grounding
point to chassis when measuring voltage and resis-
tance in the passenger compartment.
9) Use the engine ground terminal or engine as-
sembly as the grounding point to chassis when
measuring the voltage and resistance in engine
compartment.
10) Every MFI-related part is a precision part. Do
not drop them.
11) Observe the following cautions when installing
a radio in MFI equipped models.
CAUTION:
•The antenna must be kept as far apart as pos-
sible from control unit. (The ECM is located un-
der the steering column, inside of the
instrument panel lower trim panel.)
•The antenna feeder must be placed as far apart
as possible from the ECM and MFI harness.
•Carefully adjust the antenna for correct
matching.
•When mounting a large power type radio, pay
special attention to the three items mentioned
above.
•Incorrect installation of the radio may affect
the operation of ECM.
12) Release the pressure in the fuel system before
disconnecting the fuel hose. If engine starts during
this operation, run it until it stops.
13) For the model with ABS, the ABS warning light
may illuminate when performing driving test with
jacked-up or lifted-up condition, but this is not a
system malfunction. The reason for this is the
speed difference between the front and rear
wheels. After diagnosis of engine control system,
perform the ABS memory clear procedure of self-
diagnosis function.
B: INSPECTION
Before performing diagnostics, check the following
item which might affect engine problems.
1. BATTERY
1) Measure the battery voltage and specific gravity
of electrolyte.
Standard voltage: 12 V
Specific gravity: Above 1.260
2) Check the condition of the main and other fuses,
and harnesses and connectors. Also check for
proper grounding.
2. ENGINE GROUND
Make sure the engine ground terminal is properly
connected to engine.
EN-02473

EN(H6DO)(diag)-6
General Description
ENGINE (DIAGNOSTICS)
C: NOTE
1. GENERAL DESCRIPTION
•The on-board diagnostics (OBD) system detects
and indicates a fault in various inputs and outputs
of the complex electronic control. Malfunction indi-
cator light in the combination meter indicates oc-
currence of a fault or trouble.
•Further, against such a failure or sensors as may
disable the drive, the fail-safe function is provided
to ensure the minimal drivability.
•The OBD system incorporated with the vehicles
within this engine family complies with OBD-II Reg-
ulations. The OBD system monitors the compo-
nents and the system malfunction listed in Engine
Section which affects on emissions.
•When the system decides that a malfunction oc-
curs, malfunction indicator light illuminates. At the
same time of the malfunction indicator light illumi-
nation or blinking, a DTC and a freeze frame en-
gine conditions are stored into on-board computer.
•The OBD system stores freeze frame engine
condition data (engine load, engine coolant tem-
perature, fuel trim, engine speed and vehicle
speed, etc.) into on-board computer when it detects
a malfunction first.
•If the OBD system detects the various malfunc-
tions including the fault of fuel trim or misfire, the
OBD system first stores freeze frame engine condi-
tions about fuel trim or misfire.
•When the malfunction does not occur again for
three consecutive driving cycles, malfunction indi-
cator light is turned off, but DTC remains at on-
board computer.
•When troubleshooting the vehicle which com-
plies with OBD-II Regulations, connect the Subaru
Select Monitor or general scan tool to the vehicle.
2. ENGINE AND EMISSION CONTROL SYS-
TEM
•The Multipoint Fuel Injection (MFI) system is a
system that supplies the optimum air-fuel mixture
to the engine for all the various operating condi-
tions through the use of the latest electronic tech-
nology.
With this system fuel, which is pressurized at a con-
stant pressure, is injected into the intake air pas-
sage of the cylinder head. The injection quantity of
fuel is controlled by an intermittent injection system
where the electro-magnetic injection valve (fuel in-
jector) opens only for a short period of time, de-
pending on the quantity of air required for one cycle
of operation. In actual operation, the injection quan-
tity is determined by the duration of an electric
pulse applied to the fuel injector and this permits
simple, yet highly precise metering of the fuel.
•Further, all the operating conditions of the engine
are converted into electric signals, and this results
in additional features of the system, such as large
improved adaptability, easier addition of compen-
sating element etc.
The MFI system also has the following features:
•Reduced emission of harmful exhaust gases.
•Reduced in fuel consumption.
•Increased engine output.
•Superior acceleration and deceleration.
•Superior startability and warm-up perfor-
mance in cold weather since compensation is
made for coolant and intake air temperature.

EN(H6DO)(diag)-12
Electrical Component Location
ENGINE (DIAGNOSTICS)
(1) Fuel level sensor (3) Fuel tank pressure sensor (4) Fuel sub level sensor
(2) Fuel temperature sensor
EN-03685
(1)
(4)
(2)(3)
EN-03686
(2)
(1)
EN-03687
(3)
EN-03132
(4)

EN(H6DO)(diag)-17
Engine Control Module (ECM) I/O Signal
ENGINE (DIAGNOSTICS)
Starter switch B136 32 0 0 Cranking: 8 — 14
Starter relay B136 20ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14—
A/C switch B136 24ON: 10 — 13
OFF: 0
ON: 13 — 14
OFF: 0—
A/C middle pressure switch B136 33ON: 0
OFF: 10 — 13
ON: 0
OFF: 13 — 14—
Ignition switch B135 19 10 — 13 13 — 14 —
Neutral position switch B136 31ON: 0
OFF: 12±0.5
Switch is ON when
select lever is shifted
into “P” or “N” range.
Te s t m o d e c o n n e c t o r B 1 3 5 2 7 1 0 — 1 3 1 2 — 1 4 W h e n c o n n e c t e d : 0
Knock sensor 1Signal B134 15 2.4 2.4 —
Shield B134 25 0 0 —
Knock sensor 2Signal B134 16 2.4 2.4 —
Shield B134 25 0 0 —
Back-up power supply B135 5 10 — 13 13 — 14Ignition switch
“OFF”: 10 — 13
Control module power supplyB134 7 10 — 13 13 — 14 —
B135 2 10 — 13 13 — 14 —
Sensor power supply (engine
side)B134 19 5 5 —
Sensor ground (engine side) B134 29 0 0 —
Sensor power supply (body side) B135 22 5 5 —
Sensor ground (body side) B135 30 0 0 —
Ignition control
#1 B137 18 0 1 — 14 Waveform
#2 B137 19 0 1 — 14 Waveform
#3 B137 20 0 1 — 14 Waveform
#4 B137 21 0 1 — 14 Waveform
#5 B137 22 0 1 — 14 Waveform
#6 B137 23 0 1 — 14 Waveform
Fuel Injector
#1 B137 8 10 — 13 1 — 14 Waveform
#2 B137 9 10 — 13 1 — 14 Waveform
#3 B137 10 10 — 13 1 — 14 Waveform
#4 B137 11 10 — 13 1 — 14 Waveform
#5 B137 12 10 — 13 1 — 14 Waveform
#6 B137 13 10 — 13 1 — 14 Waveform
A/C relay control B136 9ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14—
Radiator fan control B136 18ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14—
Radiator fan control power supply B136 29ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 13 — 14—
Self-shutoff control B136 23 0 0 —
Malfunction indicator light B136 11 — —Light: 1 or less
Extinguish: 10 — 14
Engine speed output B136 22 — 0 — 13 or more Waveform
Purge control solenoid valve B137 29ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 13 — 14—
Pow er s te e r in g sw it c h B 1 3 4 33ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 13 — 14—
DescriptionConnector
No.
Te r m i n a l
No.
Signal (V)
ReferenceIgnition SW ON
(engine OFF)
Engine ON
(idling)

EN(H6DO)(diag)-18
Engine Control Module (ECM) I/O Signal
ENGINE (DIAGNOSTICS)
Manifold absolute pressure sen-
sorB134 6 3.5 — 4.8 1.1 — 1.9 —
Air flow sensor
Signal B135 26 0.74 0.3 — 4.5 —
Shield B135 35 0 0 —
Ground B135 34 0 0 —
Intake air temperature sensor B135 18 3.15 — 3.33 3.15 — 3.33Intake air tempera-
ture 25°C (75°F)
Fr o nt ox yg e n ( A / F)
sensor RH
Signal (+) B135 9 2.8 — 3.2 2.8 — 3.2 —
Signal (–) B135 8 2.4 — 2.7 2.4 — 2.7 —
Shield B135 1 0 0 —
Fr o nt ox yg e n ( A / F)
sensor heater RH
Signal 1 B136 3 12 — 14 — Waveform
Signal 2 B136 2 12 — 14 — Waveform
Fr o nt ox yg e n ( A / F)
sensor LH
Signal (+) B135 11 2.8 — 3.2 2.8 — 3.2 —
Signal (–) B135 10 2.4 — 2.7 2.4 — 2.7 —
Shield B135 1 0 0 —
Fr o nt ox yg e n ( A / F)
sensor heater LH
Signal 1 B135 7 12 — 14 — Waveform
Signal 2 B135 6 12 — 14 — Waveform
Rear oxygen sen-
sor RH
Signal B135 4 0 0 — 0.9 —
Shield B135 1 0 0 —
Rear oxygen sensor heater RH
signalB136 4 12 — 14 — Waveform
Rear oxygen sen-
sor LH
Signal B135 15 0 0 — 0.9 —
Shield B135 1 0 0 —
Rear oxygen sensor heater LH
signalB136 5 12 — 14 — Waveform
Immobilizer communication 1 B136 26 10 10 —
Immobilizer communication 2 B136 34 10 10 —
Fuel pump control
unit
Diagnosis
signalB135 33 10 — 13 13 — 14 —
Control B136 12 0 0 or 5 —
Brake switch 1 B135 20
When brake pedal is
depressed: 0
When brake pedal is
released: 10 — 13
When brake pedal is
depressed: 0
When brake pedal is
released: 13 — 14
—
Brake switch 2 B135 28
When brake pedal is
depressed: 10 — 13
When brake pedal is
released: 0
When brake pedal is
depressed: 13 — 14
When brake pedal is
released: 0
—
Cruise control command switch B135 24
When operating
nothing: 3.5 — 4.5
When operating
RES/ACC: 2.5 — 3.5
When operating SET/
COAST: 0.5 — 1.5
When operating
CANCEL: 0 — 0.5
When operating
nothing: 3.5 — 4.5
When operating
RES/ACC: 2.5 — 3.5
When operating SET/
COAST: 0.5 — 1.5
When operating
CANCEL: 0 — 0.5
—
Cruise control main switch B135 12ON: 0
OFF: 5
ON: 0
OFF: 5—
Oil flow control sole-
noid valve RH
Signal (+) B137 17 0 0.6 —
Signal (–) B137 16 0 0 —
Oil flow control sole-
noid valve LH
Signal (+) B137 15 0 0.6 —
Signal (–) B137 14 0 0 —
DescriptionConnector
No.
Te r m i n a l
No.
Signal (V)
ReferenceIgnition SW ON
(engine OFF)
Engine ON
(idling)