2009 SUBARU TRIBECA ECU

EN(H6DO)(diag)-328
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DQ:DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 1)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION TEM TOO LEAN (BANK 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-336
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DR:DTC P2097 POST CATALYST FUEL TRIM SYSTEM TOO RICH (BANK 1)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION TEM TOO RICH (BANK 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-344
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DS:DTC P2098 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 2)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION TEM TOO LEAN (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-352
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DT:DTC P2099 POST CATALYST FUEL TRIM SYSTEM TOO RICH (BANK 2)
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION TEM TOO RICH (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.

EN(H6DO)(diag)-390
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
EE:DTC P2227 BAROMETRIC PRESSURE CIRCUIT RANGE/PERFORMANCE
DTC DETECTING CONDITION:
•Detected when two consecutive driving cycles with fault occur.
•GENERAL DESCRIPTION RANGE/ PERFORMANCE, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.
EF:DTC P2228 BAROMETRIC PRESSURE CIRCUIT LOW INPUT
DTC DETECTING CONDITION:
•Immediately at fault recognition
•GENERAL DESCRIPTION LOW INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode OPERATION, Clear Memory Mode.> and Inspection Mode Inspection Mode.>.
Step Check Yes No
1CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
NOTE:
The barometric
pressure sensor is
built into the ECM.
It is not necessary
to inspect DTC
P0129.
Step Check Yes No
1CHECK ANY OTHER DTC ON DISPLAY.Is DTC P1110 displayed on the
Subaru Select Monitor or gen-
eral scan tool?
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
NOTE:The barometric
pressure sensor is
built into the ECM.
Te m p o r a r y p o o r
contact occurs.

EN(H6DO)(diag)-393
General Diagnostic Table
ENGINE (DIAGNOSTICS)
*1: Check ignition coil & ignitor assembly and spark plug.
*2: Indicate the symptom occurring only in cold temperatures.
*3: Make sure the secure installation.
*4: Check the fuel injector and fuel pressure regulator.
*5: Inspect air leak in air intake system.
6. Surging
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor (*2)
4) Crankshaft position sensor (*3)
5) Camshaft position sensor (*3)
6) Fuel injection parts (*4)
7) Electronic throttle control
8) Fuel pump and fuel pump relay
7. Spark knock
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor
4) Knock sensor
5) Fuel injection parts (*4)
6) Fuel pump and fuel pump relay
8. After burning in exhaust system
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor (*2)
4) Fuel injection parts (*4)
5) Fuel pump and fuel pump relay
Symptom Problem parts

FU(H6DO)-11
Throttle Body
FUEL INJECTION (FUEL SYSTEMS)
2. Throttle Body
A: REMOVAL
1) Remove the collector cover.
2) Disconnect the ground cable from battery.
3) Remove the air intake chamber. IN(H6DO)-6, REMOVAL, Air Intake Chamber.>
4) Disconnect the connectors from the throttle posi-
tion sensor.
5) Disconnect the engine coolant hoses (A) from
throttle body.
6) Remove the bolts (B) which secure throttle body
to intake manifold.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Use new O-rings.
Tightening torque:
8 N·m (0.8 kgf-m, 5.9 ft-lb)
FU-02111
FU-02112
(A)(B)
(B)
(A)

FU(H6DO)-41
Fuel Filler Pipe
FUEL INJECTION (FUEL SYSTEMS)
23.Fuel Filler Pipe
A: REMOVAL
WARNING:
•Place “NO FIRE” signs near the working area.
•Be careful not to spill fuel on the floor.
1) Disconnect the ground cable from battery.
2) Open the fuel filler flap lid, and remove the filler
cap.
3) Remove the screws which secure the gasket.
4) Lift-up the vehicle.
5) Remove the rear wheel RH.
6) Drain fuel from fuel tank. DRAINING FUEL, PROCEDURE, Fuel.>
7) Remove the mud guard. MOVAL, Mud Guard.>
8) Remove the rear suspension assembly. RS-16, REMOVAL, Rear Sub Frame.>
9) Disconnect the fuel filler hose.
10) Remove the bolts which hold fuel filler pipe
bracket on the body.
11) Remove the fuel filler pipe to the underside of
the vehicle.
B: INSTALLATION
1) Open the fuel filler flap lid.
2) Set the fuel saucer (A) with rubber packing (C),
and insert the fuel filler pipe into hole from the inner
side of apron.
3) Align the holes in fuel filler pipe neck and set the
cup (B), and tighten the nuts.
NOTE:
If the edges of rubber packing are folded toward in-
side, straighten it with a flat tip screwdriver.
4) Correctly insert the fuel filler hose to specified
position, and then tighten the clamp.
FU-00095
FU-00096
FU-02668
FU-02667
FU-02766
(A)
(C)
(B)
FU-02668