Manifold SUBARU TRIBECA 2009 1.G Service Repair Manual

GD(H6DO)-221
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EM:DTC P2227 BAROMETRIC PRESSURE CIRCUIT RANGE/ PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of atmospheric pressure sensor output property.
Judge as NG when the atmospheric pressure sensor output is largely different from the intake manifold pres-
sure at engine starting.
2. COMPONENT DESCRIPTION
The barometric pressure sensor is built into the ECM.
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis once at ignition switch ON.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes 0.3 second
or more.
Time Needed for Diagnosis: 0.3 second
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear the NG when the continuous time of completing the malfunction criteria below be-
comes more than 0.262 second.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
Atmospheric pressure sensor process: Atmospheric pressure fixed at 101 kPa (760 mmHg, 29.8 inHg).
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Secondary Parameters Enable Conditions
Engine RPM at engine starting < 300 rpm
Ve h i c l e S p e e d < 1 k m / h ( 0 . 6 2 M P H )
Diagnosis for atmospheric pressure sen-
sor property
Incomplete
Judgment Value
Malfunction Criteria Threshold Value
|Atmospheric pressure – Manifold pres-
sure|
≥ 26.7 kPa (200
mmHg, 7.88 inHg)
|Intake manifold pressure at engine star-
tup – Manifold pressure|
< 1.33 kPa (10 mmHg,
2.95 inHg)
Judgment Value
Malfunction Criteria Threshold Value
|Atmospheric pressure – Manifold pres-
sure|
< 26.7 kPa (200
mmHg, 7.88 inHg)

ME(H6DO)-24
Intake Manifold Vacuum
MECHANICAL
5. Intake Manifold Vacuum
A: INSPECTION
1) Idle the engine.
2) Disconnect the brake vacuum hose from intake
manifold, and then install the vacuum gauge.
3) Keep the engine at idle speed and read the vac-
uum gauge indication.
By observing the gauge needle movement, internal
condition of the engine can be diagnosed as de-
scribed below.
Vacuum pressure (at idling, A/C OFF):
–60.0 kPa ( –450 mmHg, –17.72 inHg) or less
ME-02655
Diagnosis of engine condition by measurement of intake manifold vacuum
Va c u u m g a u g e i n d i c a t i o n Po s s i bl e e n g i n e c o n d i t i o n
1. Needle is steady but lower than normal position. This ten-
dency becomes more evident as engine temperature rises.
Air leakage around intake manifold gasket, disconnection or
damage of vacuum hose
2. Needle intermittently drops to position lower than normal
position.
Leakage around cylinder
3. Needle drops suddenly and intermittently from normal posi-
tion.
Sticky valve
4. When engine speed is gradually increased, needle begins to
vibrate rapidly at certain speed, and then vibration increases as
engine speed increases.
Weak or broken valve spr ings
5. Needle vibrates above and below normal position in narrow
range.
Defective ignition system or throttle chamber idle adjustment

ME(H6DO)-40
Preparation for Overhaul
MECHANICAL
12.Preparation for Overhaul
A: REMOVAL
1) Remove the engine assembly from the body.
sembly.>
2) Set the engine on ST.
ST 18232AA000 ENGINE STAND
3) Before servicing overhaul, remove the sensor,
pipe and hose that installed to engine.
(1) Remove the intake manifold. FU(H6DO)-12, REMOVAL, Intake Manifold.>
(2) Remove the generator. 19, REMOVAL, Generator.>
(3) Remove the A/C compressor. 33, REMOVAL, Compressor.>
(4) Disconnect the water pipe and hose.
(5) Disconnect the engine harness.
(6) Remove the spark plug. 4, REMOVAL, Spark Plug.>
(7) Remove the camshaft position sensor.
Position Sensor.>
(8) Remove the crankshaft position sensor.
Position Sensor.>
(9) Remove the knock sensor. FU(H6DO)-20, REMOVAL, Knock Sensor.>
(10) Remove the engine coolant temperature
sensor. gine Coolant Temperature Sensor.>
(11) Remove the oil pressure switch. LU(H6DO)-13, REMOVAL, Oil Pressure
Switch.>
(12) Remove the oil filter. 14, REMOVAL, Engine Oil Filter.>
(13) Remove the oil cooler. 15, REMOVAL, Oil Cooler.>
STME-02448

ME(H6DO)-84
Engine Trouble in General
MECHANICAL
3) Initial combustion occurs. Engine control system A
Intake system Defective intake manifold gasket B
Defective throttle body gasket B
Fuel line Defective fuel pump and relay C
Clogged fuel line C
Lack of or insufficient fuel B
Chain Trouble B
Defective timing B
Compression Incorrect valve clearance C
Loosened spark plug or defective gasket C
Loosened cylinder head bolt or defective gasket C
Improper valve sealing C
Defective valve stem C
Wor n or broken valve spr ing B
Wor n or stuck piston r ings, cylinder and piston C
Incorrect valve timing B
Improper engine oil (low viscosity) B
Tr o u b l e o f t a p p e t C
Tr o u b l e o f t a p p e t . I n c a s e n o i s e o c c u r s w i t h v a l v e m o v -
ing. Or the harness involved to oil switching solenoid
valve, variable valve lift diagnosis oil pressure switch
and variable valve lift has trouble in a past.
B
4) Engine stalls after initial
combustion.
Engine control system A
Intake system Loosened or cracked intake duct B
Loosened or cracked PCV hose C
Loosened or cracked vacuum hose C
Defective intake manifold gasket B
Defective throttle body gasket B
Dirty air cleaner element C
Fuel line Clogged fuel line C
Lack of or insufficient fuel B
Chain Trouble B
Defective timing B
Compression Incorrect valve clearance C
Loosened spark plug or defective gasket C
Loosened cylinder head bolt or defective gasket C
Improper valve sealing C
Defective valve stem C
Wor n or broken valve spr ing B
Wor n or stuck piston r ings, cylinder and piston C
Incorrect valve timing B
Improper engine oil (low viscosity) B
Tr o u b l e o f t a p p e t C
Tr o u b l e o f t a p p e t . I n c a s e n o i s e o c c u r s w i t h v a l v e m o v -
ing. Or the harness involved to oil switching solenoid
valve, variable valve lift diagnosis oil pressure switch
and variable valve lift has trouble in a past.
B
Symptom Problem parts etc. Possible cause RANK

ME(H6DO)-85
Engine Trouble in General
MECHANICAL
2. Rough idle and engine
stall
Engine control system A
Intake system Loosened or cracked intake duct A
Loosened or cracked PCV hose A
Loosened or cracked vacuum hose A
Defective intake manifold gasket B
Defective throttle body gasket B
Defective PCV valve C
Loosened oil filler cap B
Dirty air cleaner element C
Fuel line Defective fuel pump and relay C
Clogged fuel line C
Lack of or insufficient fuel B
Chain Defective timing C
Compression Incorrect valve clearance B
Loosened spark plug or defective gasket B
Loosened cylinder head bolt or defective gasket B
Improper valve sealing B
Defective valve stem C
Wor n or broken valve spr ing B
Wor n or stuck piston r ings, cylinder and piston B
Incorrect valve timing A
Improper engine oil (low viscosity) B
Tr o u b l e o f t a p p e t C
Tr o u b l e o f t a p p e t . I n c a s e n o i s e o c c u r s w i t h v a l v e m o v -
ing. Or the harness involved to oil switching solenoid
valve, variable valve lift diagnosis oil pressure switch
and variable valve lift has trouble in a past.
B
Lubrication system Incorrect oil pressure B
Defective rocker cover gasket C
Cooling system Over-heating C
Others Evaporative emission control system malfunction A
Stuck or damaged throttle valve B
Symptom Problem parts etc. Possible cause RANK

ME(H6DO)-86
Engine Trouble in General
MECHANICAL
3. Low output, hesitation and
poor acceleration
Engine control system A
Intake system Loosened or cracked intake duct A
Loosened or cracked PCV hose A
Loosened or cracked vacuum hose B
Defective intake manifold gasket B
Defective throttle body gasket B
Defective PCV valve B
Loosened oil filler cap B
Dirty air cleaner element A
Fuel line Defective fuel pump and relay B
Clogged fuel line B
Lack of or insufficient fuel C
Chain Defective timing B
Compression Incorrect valve clearance B
Loosened spark plug or defective gasket B
Loosened cylinder head bolt or defective gasket B
Improper valve sealing B
Defective valve stem C
Wor n or broken valve spr ing B
Wor n or stuck piston r ings, cylinder and piston C
Incorrect valve timing A
Improper engine oil (low viscosity) B
Tr o u b l e o f t a p p e t C
Tr o u b l e o f t a p p e t . I n c a s e n o i s e o c c u r s w i t h v a l v e m o v -
ing. Or the harness involved to oil switching solenoid
valve, variable valve lift diagnosis oil pressure switch
and variable valve lift has trouble in a past.
B
Lubrication system Incorrect oil pressure B
Cooling system Over-heating C
Over-cooling C
Others Evaporative emission control system malfunction A
Symptom Problem parts etc. Possible cause RANK

ME(H6DO)-87
Engine Trouble in General
MECHANICAL
4. Surging Engine control system A
Intake system Loosened or cracked intake duct A
Loosened or cracked PCV hose A
Loosened or cracked vacuum hose A
Defective intake manifold gasket B
Defective throttle body gasket B
Defective PCV valve B
Loosened oil filler cap B
Dirty air cleaner element B
Fuel line Defective fuel pump and relay B
Clogged fuel line B
Lack of or insufficient fuel C
Chain Defective timing B
Compression Incorrect valve clearance B
Loosened spark plug or defective gasket C
Loosened cylinder head bolt or defective gasket C
Improper valve sealing C
Defective valve stem C
Wor n or broken valve spr ing C
Wor n or stuck piston r ings, cylinder and piston C
Incorrect valve timing A
Improper engine oil (low viscosity) B
Tr o u b l e o f t a p p e t C
Tr o u b l e o f t a p p e t . I n c a s e n o i s e o c c u r s w i t h v a l v e m o v -
ing. Or the harness involved to oil switching solenoid
valve, variable valve lift diagnosis oil pressure switch
and variable valve lift has trouble in a past.
B
Cooling system Over-heating B
Others Evaporative emission control system malfunction C
5. Engine does not return to
idle.
Engine control system A
Intake system Loosened or cracked vacuum hose A
Others Stuck or damaged throttle valve A
6. Dieseling (Run-on) Engine control system A
Cooling system Over-heating B
Others Evaporative emission control system malfunction B
Symptom Problem parts etc. Possible cause RANK

ME(H6DO)-90
Engine Noise
MECHANICAL
29.Engine Noise
A: INSPECTION
(NOTE*)
When disconnecting the fuel injector connector, the malfunction indicator light illuminates and DTC is stored in ECM memory.
Therefore, carry out the clear memory mode and inspection
mode after connecting the fuel injector connector.
Ty p e o f s o u n d C o n d i t i o n P o s s i b l e c a u s e
Regular clicking soundSound increases as engine
speed increases.
•Valve mechanism is defective.
•Incorrect valve clearance
•Worn valve rocker
•Worn camshaft
•Broken valve spring
•Trouble of tappet
Heavy and dull clankOil pressure is low.•Worn camshaft main bearing
•Worn connecting rod bearing (large end)
Oil pressure is normal. Damaged engine mounting
High-pitched clank
Sound is noticeable when
accelerating with an overload
condition.
•Ignition timing advanced
•Accumulation of carbon inside combustion chamber
•Wrong spark plug
•Improper gasoline
Clank when engine speed is
between 1,000 and 2,000
rpms.
Sound is reduced when fuel
injector connector of noisy cyl-
inder is disconnected.
(NOTE*)
•Worn crankshaft main bearing
•Worn bearing at crankshaft end of connecting rod
Knocking sound when engine
is operating under idling speed
and engine is warm
Sound is reduced when fuel
injector connector of noisy cyl-
inder is disconnected.
(NOTE*)
•Worn cylinder liner and piston ring
•Broken or stuck piston ring
•Worn piston pin and hole at piston end of connecting rod
Sound is not reduced if each
fuel injector connector is dis-
connected in turn. (NOTE*)
•Unusually worn valve lifter
•Worn cam gear
•Worn camshaft journal bore in crankcase
Squeaky sound — • Insufficient generator lubrication
Rubbing sound — • Poor contact of generator brush and rotor
Gear scream when starting
engine—•Defective ignition starter switch
•Worn gear and starter pinion
Sound like polishing glass with
a dry cloth—•Loose drive belt
•Defective water pump shaft
Hissing sound —•Insufficient compression
•Air leakage in air intake system, hose, connection or manifold
Timing belt noise —•Loose timing belt
•Belt contacting with case/adjacent part
Va l ve t a p p e t n o i s e —•Incorrect valve clearance
•Trouble of tappet

5AT-40
Automatic Transmission Assembly
AUTOMATIC TRANSMISSION
34) Install the engine hanger rear, and then con-
nect the engine harness connector.
35) Pour ATF from the oil charge pipe. 5AT-26, REPLACEMENT, Automatic Transmis-
sion Fluid.>
36) Install the air breather hose. INSTALLATION, Air Breather Hose.>
37) Install the throttle body to intake manifold.
Tightening torque:
8 N·m (0.8 kgf-m, 5.9 ft-lb)
38) Install the air intake chamber. IN(H6DO)-6, INSTALLATION, Air Intake Cham-
ber.>
39) Install the collector cover.
40) Connect the ground cable to the battery.
41) Perform Clear Memory 2 operation. 5AT(diag)-17, CLEAR MEMORY MODE, OPERA-
TION, Subaru Select Monitor.>
42) Perform the inspection with driving the vehicle
at the end of repair work, and make sure there is no
faulty as below;
•Excessive shift shock
•Oil leakage from the transmission body, etc.
•Occurrence of noise caused by interference etc.
NOTE:
If excessive shift shock is felt, execute advance op-
eration of learning control. PROCEDURE, Learning Control.>
(A) Engine harness connectors
(B) Engine hanger rear
(B)
(A)
(A)
AT-02023

WI-33
Engine Electrical System
WIRING SYSTEM
WI-08040
A3D2
D22D23
POWERCIRCUIT
COMBINATION METER
C16B27D18D19D20D21
C11C22
C6
B23B29B31B21
1
2
3
4
5
6
ACCELERATORPEDAL POSITIONSENSOR
JOINT CONNECTOR A
JOINT CONNECTOR
MALFUNCTION INDICATOR LIGHTOIL PRESSUREWARNING LIGHT
I/F
I/F
I/F
VDC CONTROL MODULE
IGNITION COIL NO.1
BODY INTEGRATED UNIT(CAN COMMUNICATION LINE)
OILPRESSURESWITCH
CRANKSHAFT POSITION SENSORA13A14
ENGINE GROUND
ECM
A18A28
D4D5
A19B22A6A29A34
D15B30
D14D17D16D31D30
ELECTRONIC THROTTLE CONTROL
A24
A25A16
A15
A32
D1
MANIFOLD ABSOLUTE PRESSURE SENSOR
ENGINE COOLANT TEMPRERATURE SENSOR
VVL DIAGNOSIS OIL PRESSURE SWITCH RH
D25D24
KNOCK SENSOR 2
D6D26D7
A5
MICRO COMPUTER
CAN TRANSCEIVER &RECEIVER
OIL SWITCHING SOLENOID VALVE RH
TA C H O -METER
SPEEDMETER
ENGINECOOLANTTEM-PERATUREGAUGE
DATA LINK CONNECTOR
TEST MODECONNECTOR
OIL TEMPERATURE SENSORA23
A31D3
VVL DIAGNOSIS OIL PRESSURE SWITCH LH
KNOCK SENSOR 1
OIL SWITCHING SOLENOID VALVE LH
INTAKE OIL FLOW CONTROL SOLENOID VALVE RH
INTAKE OIL FLOW CONTROL SOLENOID VALVE LH
IGNITION COIL NO.2 IGNITION COIL NO.3 IGNITION COIL NO.4 IGNITION COIL NO.5 IGNITION COIL NO.6
789