2004 SUBARU FORESTER wheel

EN(H4DOTC)-7
ENGINE (DIAGNOSTIC)
General Description
12) 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 the control unit. (The ECM is located
under the steering column, inside of the instru-
ment panel lower trim panel.)
 The antenna feeder must be placed as far
apart as possible from the ECM and MFI har-
ness.
 Carefully adjust the antenna for correct
matching.
 When mounting a large power type radio, pay
special attention to the three items above men-
tioned.
 Incorrect installation of the radio may affect
the operation of the ECM.
13) Before disconnecting the fuel hose, disconnect
the fuel pump connector and crank the engine for
more than five seconds to release pressure in the
fuel system.If engine starts during this operation,
run it until it stops.
14) Problems in the electronic-controlled automatic
transmission may be caused by failure of the en-
gine, the electronic control system, the transmis-
sion proper, or by a combination of these.These
three causes (engine, electronic control system,
transmission) must be distinguished clearly when
performing diagnostics.
15) Diagnostics should be conducted by rotating
with simple, easy operations and proceeding to
complicated, difficult operations.The most impor-
tant thing in diagnostics is to understand the cus-
tomer’s complaint, and distinguish between the
three causes.
16) On the model with ABS, when performing driv-
ing test in jacked-up or lifted-up position, some-
times the warning light may be lit, but this is not a
malfunction of the system.The reason for this is the
speed difference between the front and rear
wheels.After diagnosis of engine control system,
perform the ABS memory clearance procedure of
self-diagnosis function.
B: INSPECTION
Before performing diagnostics, check the following
items which might affect engine problems:
1. BATTERY
1) Measure battery voltage and specific gravity of
electrolyte.
Standard voltage: 12 V
Specific gravity: Above 1.2602) 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 the engine.
C: NOTE
1. GENERAL DESCRIPTION
 On-board diagnosis (OBD) system detects and
indicates a fault in various inputs and outputs of the
complex electronic control.Malfunction indicator
light in the combination meter indicates occurrence
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 driveability.
 The OBD system incorporated with the vehicles
within this engine family complies with Section
1968.1, California Code of Regulations (OBD-II
regulation).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, the 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 the 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.
 The OBD-II system is capable of communication
with a general scan tool (OBD-II general scan tool)
formed by ISO 9141 CARB.
EN-00070

EN(H4DOTC)-38
ENGINE (DIAGNOSTIC)
Subaru Select Monitor
8. READ CURRENT DATA FOR AT
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Transmission} and press the [YES] key.
3) Press the [YES] key after displayed the information of transmission type.
4) On the «Transmission Diagnosis» screen, select the {Current Data Display/Save}, and then press the
[YES] key.
5) On the «Data Display Menu» screen, select the {Data Display} and press the [YES] key.
6) Using the scroll key, move the display screen up or down until the desired data is shown.
 A list of the support data is shown in the following table.
NOTE:
For detailed operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MANUAL”.
Description Display Unit of measure
Battery voltage Battery Voltage V
Rear vehicle speed sensor signal Rear Wheel Speed km/h or MPH
Front vehicle speed sensor signal Front Wheel Speed km/h or MPH
Engine speed signal Engine Speed rpm
ATF temperature signal ATF Temp.°C or °F
Mass air flow sensor signal Air Flow Sensor Voltage V
Throttle position signal Throttle Sensor Voltage V
Gear Position Gear position —
Line pressure control duty ratio Line Pressure Duty Ratio %
Lock up clutch control duty ratio Lock Up Duty Ratio %
Transfer clutch control duty ratio Transfer Duty Ratio %
Throttle position sensor power supply Throttle Sensor Power V
Turbine revolution signal Turbine Revolution Speed rpm
2-4 Brake timing pressure control duty ratio Brake Clutch Duty Ratio %
Stop light switch signal Stop Light Switch ON or OFF
Anti lock brake system signal ABS Signal ON or OFF
Cruise control system signal Cruise Control Signal ON or OFF
Neutral/Parking range signal N/P Range Signal ON or OFF
Reverse range signal R Range Signal ON or OFF
Drive range signal D Range Signal ON or OFF
3rd range signal 3rd Range Signal ON or OFF
2nd range signal 2nd Range Signal ON or OFF
1st range signal 1st Range Signal ON or OFF
Shift control solenoid A Shift Solenoid #1 ON or OFF
Shift control solenoid B Shift Solenoid #2 ON or OFF
Torque control output signal #1 Torque Control Signal #1 ON or OFF
Torque control output signal #2 Torque Control Signal #2 ON or OFF
Torque control cut signal Torque Control Cut Sig. ON or OFF
2-4 brake timing control solenoid valve 2-4 Brake Timing Sol. ON or OFF
Low clutch timing control solenoid valve Low Clutch Timing Sol. ON or OFF
Automatic transmission diagnosis indicator lamp Diagnosis Lamp ON or OFF

EN(H4DOTC)-42
ENGINE (DIAGNOSTIC)
Inspection Mode
1. PREPARATION FOR THE INSPECTION
MODE
1) Check battery voltage is more than 12 V and fuel
remains half [20 to 402 (5.3 to 10.6 US gal, 4.4 to
8.8 Imp gal)].
2) Lift-up the vehicle using a garage jack and place
it on rigid racks or drive the vehicle onto free rollers.
WARNING:
 Before raising the vehicle, ensure parking
brakes are applied.
 Do not use a pantograph jack in place of a rig-
id rack.
 Secure a rope or wire to the front or rear tow-
ing hooks to prevent the lateral runout of front
wheels.
 Do not abruptly depress/release clutch pedal
or accelerator pedal during works even when
the engine is operating at low speeds since this
may cause vehicle to jump off free rollers.
 In order to prevent the vehicle from slipping
due to vibration, do not place any wooden
blocks or similar items between the rigid racks
and the vehicle.
 Since the rear wheels will also rotate, do not
place anything near them.Also, make sure that
nobody goes in front of the vehicle.
2. SUBARU SELECT MONITOR
1) After clearing the memory, check for any remain-
ing unresolved trouble data. EN(H4DOTC)-47, Clear Memory Mode.>
2) Idle the engine.
3) Prepare the Subaru Select Monitor kit. EN(H4DOTC)-8, PREPARATION TOOL, General
Description.>
4) Connect the diagnosis cable to Subaru Select
Monitor.
5) Insert the cartridge to Subaru Select Monitor.
General Description.>
6) Connect the test mode connector (A) located at
the lower portion of instrument panel (on the driv-
er’s side).
(A) Rigid rack
(B) Free rollers
EN-00041
(A)
(B)
(A) Test mode connector
EN-00038
EN-00039
EN-00333
(A)

EN(H4DOTC)-43
ENGINE (DIAGNOSTIC)
Inspection Mode
7) Connect the Subaru Select Monitor to data link
connector.
(1) Connect the Subaru Select Monitor to data
link connector located in the lower portion of the
instrument panel (on the driver’s side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect the scan tools except for Suba-
ru Select Monitor and OBD-II general scan tool.
8) Turn the ignition switch to ON (engine OFF) and
Subaru Select Monitor switch to ON.
9) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
10) On the «System Selection Menu» display
screen, select the {Engine} and press the [YES]
key.
11) Press the [YES] key after the information of en-
gine type was displayed.
12) On the «Engine Diagnosis» screen, select the
{D Check} and press the [YES] key.
13) When the “Perform D Check?” is shown on the
screen, press the [YES] key.14) Perform subsequent procedures as instructed
on the display screen.
 If trouble still remains in the memory, the corre-
sponding DTC appears on the display screen.
NOTE:
 For detailed operation procedure, refer to the
“SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
 For details concerning DTCs, refer to the List of
Diagnostic Trouble Code (DTC).
ble Code (DTC).>
 Release the parking brake.
 The speed difference between front and rear
wheels may light either the ABS warning light, but
this indicates no malfunctions.When engine control
diagnosis is finished, perform the ABS memory
clearance procedure of self-diagnosis function.
3. OBD-II GENERAL SCAN TOOL
1) After performing the diagnostics and clearing the
memory, check for any remaining unresolved trou-
ble data. Mode.>
2) Idle the engine.
3) Connect the test mode connector (A) located at
the lower portion of instrument panel (on the driv-
er’s side).
4) Connect the OBD-II general scan tool to its data
link connector in the lower portion of the instrument
panel (on the driver’s side).
CAUTION:
Do not connect the scan tools except for Suba-
ru Select Monitor and OBD-II general scan tool.
(A) Power switch
EN-00334
EN-00040
(A)
EN-00333
(A)
EN-00334

EN(H4DOTC)-44
ENGINE (DIAGNOSTIC)
Inspection Mode
5) Start the engine.
NOTE:
 Ensure the select lever is placed in the “P” range
before starting.(AT model)
 Depress the clutch pedal when starting the en-
gine.(MT model)
6) Using the selector lever or shift lever, turn the “P”
range switch and the “N” range switch to ON.
7) Depress the brake pedal to turn the brake switch
ON.(AT model)
8) Keep the engine speed in the 2,500 — 3,000
rpm range for 40 seconds.
9) Place the select lever or shift lever in the “D”
range (AT model) or “1st” gear (MT model) and
drive the vehicle at 5 to 10 km/h (3 to 6 MPH).
NOTE:
 On AWD vehicles, release the parking brake.
 The speed difference between front and rear
wheels may light either the ABS warning light, but
this indicates no malfunctions.When engine control
diagnosis is finished, perform the ABS memory
clearance procedure of self-diagnosis function.
10) Using the OBD-II general scan tool, check
DTC(s) and record the result(s).
NOTE:
 For detailed operation procedures, refer to the
OBD-II General Scan Tool Operation Manual.
 For details concerning DTCs, refer to the List of
Diagnostic Trouble Code (DTC).
ble Code (DTC).>

FU(H4DOTC 2.5)-15
FUEL INJECTION (FUEL SYSTEM)
Intake Manifold
(6) Place the power steering pump on the right
side wheel apron.
12) Disconnect the emission hose from the PCV
valve.
13) Disconnect the engine coolant hoses from the
throttle body.
14) Disconnect the brake booster hose.15) Disconnect the pressure hose from the intake
duct.
16) Disconnect the engine harness connectors
from the bulkhead harness connectors.
17) Disconnect the connectors from the engine cool-
ant temperature sensor (A), oil pressure switch (B)
and crankshaft position sensor (C).
FU-00021
FU-00022
FU-01074
FU-00023
FU-00024
FU-00025
FU-00026
(A)
(B)
(C)
FU-00027

FU(H4DOTC 2.5)-36
FUEL INJECTION (FUEL SYSTEM)
Front Oxygen (A/F) Sensor
14.Front Oxygen (A/F) Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from the front oxygen
(A/F) sensor.
3) Disconnect the engine harness fixed by clip (A)
from the bracket (B).
4) Remove the front right side wheel.
5) Lift-up the vehicle.
6) Remove the service hole cover.7) Apply SUBARU CRC or its equivalent to the
threaded portion of front oxygen (A/F) sensor, and
leave it for one minute or more.
SUBARU CRC (Part No. 004301003)
8) 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 exhaust pipe.
FU-00009
FU-01229
FU-00078
(A)(B)
FU-00783
FU-00080

FU(H4DOTC 2.5)-37
FUEL INJECTION (FUEL SYSTEM)
Front Oxygen (A/F) Sensor
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:
SS-30 JET LUBE
CAUTION:
Never apply anti-seize compound to protector
of front oxygen (A/F) sensor.
2) Install the front oxygen (A/F) sensor.
Tightening torque:
30 N·m (3.1 kgf-m, 22.1 ft-lb)
3) Install the service hole cover.
4) Lower the vehicle.
5) Install the front right side wheel.
6) Connect the engine harness to the bracket (B)
using clips (A).7) Connect the connector of front oxygen (A/F)
sensor.
8) Connect the battery ground cable to battery.
FU-00080
FU-00783
FU-00078
(A)(B)
FU-01229
FU-00009