SUBARU FORESTER 2004 Service Repair Manual
Manufacturer: SUBARU, Model Year: 2004, Model line: FORESTER, Model: SUBARU FORESTER 2004Pages: 2870, PDF Size: 38.67 MB
Page 1141 of 2870
EN(H4SO)-43
ENGINE (DIAGNOSTIC)
Drive Cycle
4. DRIVE THE VEHICLE WITH FOLLOWING DRIVE PATTERNS
(A) Run the engine at idle for a
minute.(D) Slowdown the vehicle to 64 km/h
(40 MPH) with throttle fully closed
condition.(F) Accelerate the vehicle to 97 km/h
(60 MPH) within 10 seconds.
(B) Accelerate the vehicle to 97 km/h
(60 MPH) within 20 seconds.(G) Stop the vehicle with throttle fully
closed condition. (E) Drive the vehicle at 64 km/h (40
MPH) for 10 seconds.
(C) Drive the vehicle at 97 km/h (60
MPH) for 20 seconds.
(1) Vehicle speed km/h (MPH) (2) Seconds
DTC Item On condition
*P0121 Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance —
*P0139O
2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
—
*P0171 System too Lean (Bank 1) —
*P0172 System too Rich (Bank 1) —
*P0301 Cylinder 1 Misfire Detected —
*P0302 Cylinder 2 Misfire Detected —
*P0303 Cylinder 3 Misfire Detected —
*P0304 Cylinder 4 Misfire Detected —
*P0400 Exhaust Gas Recirculation Flow —
EN-0019550
100150 0 65 (40) 96 (60)
(2) (1)
Page 1142 of 2870
EN(H4SO)-44
ENGINE (DIAGNOSTIC)
Clear Memory Mode
14.Clear Memory Mode
A: OPERATION
1. SUBARU SELECT MONITOR (NORMAL
MODE)
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 {Engine} and press the [YES]
key.
3) Press the [YES] key after the information of en-
gine type was displayed.
4) On the «Engine Diagnosis» display screen, se-
lect the {Memory Clear} and press the [YES] key.
5) When the “Done” and “Turn Ignition Switch OFF”
are shown on the display screen, turn the ignition
switch to OFF and then Subaru Select Monitor
switch to OFF.
NOTE:
After the memory has been cleared, the idle air
control solenoid valve must be initialized. To do
this, turn the ignition switch to the ON position. Wait
3 seconds before starting the engine.
For detailed operation procedure, refer to the
“SUBARU SELECT MONITOR OPERATION
MANUAL”.
2. SUBARU SELECT MONITOR (OBD
MODE)
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 {Engine} and press the [YES]
key.
3) Press the [YES] key after the information of en-
gine type was displayed.
4) On the «Engine Diagnosis» display screen, se-
lect the {OBD System} and press the [YES] key.
5) On the «OBD Menu» display screen, select the
{DTC Clear} and press the [YES] key.
6) When the “Perform Diagnostic Code(s) Clear?”
is shown on the screen, press the [YES] key.
7) Turn the ignition switch to OFF and then turn the
Subaru Select Monitor to OFF.
NOTE:
After the memory has been cleared, the idle air
control solenoid valve must be initialized. To do
this, turn the ignition switch to the ON position. Wait
3 seconds before starting the engine.
For detailed operation procedure, refer to the
“SUBARU SELECT MONITOR OPERATION
MANUAL”.
3. OBD-II GENERAL SCAN TOOL
For clear memory procedures using the OBD-II
general scan tool, refer to the OBD-II General Scan
Tool Instruction Manual.
After the memory has been cleared, the idle air
control solenoid valve must be initialized. To do
this, turn the ignition switch to the ON position. Wait
3 seconds before starting the engine.
Page 1143 of 2870
EN(H4SO)-45
ENGINE (DIAGNOSTIC)
Compulsory Valve Operation Check Mode
15.Compulsory Valve Operation
Check Mode
A: OPERATION
1) Prepare the Subaru Select Monitor kit.
scription.>
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to Subaru Select Monitor.
4) Connect the test mode connector (A) located at
the lower portion of glove box.5) Connect the Subaru Select Monitor to data link
connector located in the lower portion of the instru-
ment 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.
6) Turn ignition switch to ON (engine OFF) and turn
Subaru Select Monitor switch to ON.
7) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
8) On the «System Selection Menu» display
screen, select the {Engine} and press the [YES]
key.
9) Press the [YES] key after the information of en-
gine type was displayed.
10) On the «Engine Diagnosis» display screen, se-
lect the {System Operation Check Mode} and press
the [YES] key.
11) On the «System Operation Check Mode» dis-
play screen, select the {Actuator ON/OFF Opera-
tion} and press the [YES] key.
12) Select the desired compulsory actuator on the
«Actuator ON/OFF Operation» display screen and
press the [YES] key.
13) Pressing the [NO] key completes the compul-
sory valve operation check mode. The display will
then return to the «Actuator ON/OFF Operation»
screen.
EN-00038
EN-00039
EN-00238
(A)
(A) Power switch
ME-00325
EN-00040
(A)
Page 1144 of 2870
EN(H4SO)-46
ENGINE (DIAGNOSTIC)
Compulsory Valve Operation Check Mode
A list of the support data is shown in the following
table.
NOTE:
“EGR solenoid” is not indicated but EGR sole-
noid valve is installed to the vehicle.
The following parts will be displayed but not func-
tional because vehicle are not equipped with them.
For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
Description Display
Compulsory fuel pump relay oper-
ation checkFuel Pump
Compulsory radiator fan relay
operation checkRadiator Fan Relay
Compulsory air conditioning relay
operation checkA/C Compressor Relay
Compulsory purge control sole-
noid valve operation checkCPC Solenoid
Display
ASV Solenoid
FICD Solenoid
Pressure switching solenoid 1
Pressure switching solenoid 2
PCV Solenoid
Vent Control Solenoid
Atmospheric pressure switching solenoid
Page 1145 of 2870
EN(H4SO)-47
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
16.Malfunction Indicator Light
A: PROCEDURE
B: ACTIVATION OF MALFUNCTION
INDICATOR LIGHT
1) When the ignition switch is turned to ON (engine
off), the malfunction indicator light (1) in the combi-
nation meter illuminates.
NOTE:
If the malfunction indicator light does not illuminate,
perform the diagnosis of malfunction indicator light
circuit or the combination meter circuit.
LIGHT DOES NOT COME ON, Malfunction Indica-
tor Light.>2) After starting the engine, the malfunction indica-
tor light goes out. If it does not, either the engine or
the emission control system is malfunctioning.
1. Activation of malfunction indicator light.
↓
2. Check that the malfunction indicator light does not come on.
↓
3. Check that the malfunction indicator light does not go off.
↓
4. Check that the malfunction indicator light does not blink.
↓
5. Check that the malfunction indicator light remains blinking.
EN-00950(1)
(1) No faulty
(2) Trouble occurs
(3) ON
(4) OFF
(5) Ignition switch ON
(6) Engine start
EN-01679
(1)
(2)
(5)
(6)(3)
(4)
(3)
(4)
Page 1146 of 2870
EN(H4SO)-48
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
3) If the diagnosis system detects a misfire which
could damage the catalyst, the malfunction indica-
tor light will blink at a cycle of 1 Hz.
4) When the ignition switch is turned to ON (engine
off) or to “START” with the test mode connector
connected, the malfunction indicator light blinks at
a cycle of 3 Hz.
(1) ON
(2) OFF
(3) Ignition switch ON
(4) Engine start
(5) Misfire start
(6) 1 second
(1) ON
(2) OFF
(3) Ignition switch ON
(4) 1 second
EN-01680
(2) (1)
(3)
(4)
(5)(6)
EN-01681
(2)(1)
(4)
(3)
Page 1147 of 2870
EN(H4SO)-49
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
C: MALFUNCTION INDICATOR LIGHT DOES NOT COME ON
DIAGNOSIS:
The malfunction indicator light circuit is open or shorted.
TROUBLE SYMPTOM:
When the ignition switch is turned ON (engine OFF), malfunction indicator light does not come on.
WIRING DIAGRAM:
EN-00259
i10
123456789101112131415161718192021222324252627282930
BATTERY
1
B72
B134IGNITION
SWITCH
i12 COMBINATION
METER
A:
i10 B:
SBF-44
28
ECM
B9A1
i12
1234568791011121314
B134
1234567891011121314151617181920212223242526272829303132333435
B72
34
12
SBF-1No.14
B37
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
B38
219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
B37
i2
B38
i3165
LHD
LHDRHD
RHD
i3i3
B381317
LHD
LHDRHD
RHD B38
A: B:
Page 1148 of 2870
EN(H4SO)-50
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
Step Check Yes No
1 CHECK OUTPUT SIGNAL FROM ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM con-
nector and chassis ground.
Connector & terminal
(B134) No. 28 (+) — Chassis ground (
−):Is the voltage less than 1 V? Go to step 4.Go to step 2.
2 CHECK POOR CONTACT.
Check for poor connection when shaking or
pulling ECM connector and harness.Does malfunction indicator
light illuminate?Repair the poor
contact in ECM
connector.Go to step 3.
3 CHECK ECM CONNECTOR.
Check the connection of ECM connector.Is the ECM connector correctly
connected?Replace the ECM.
Engine Control
Module (ECM).>Repair the con-
nection of ECM
connector.
4 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Remove the combination meter.
3) Disconnect the connector from ECM and
combination meter.
4) Measure the resistance of harness
between ECM and combination meter connec-
tor.
Connector & terminal
(B134) No. 28 — (i12) No. 1:Is the resistance less than 1
Ω?Go to step 5.Repair harness
and connector.
N
OTE:
In this case repair
the following:
Open circuit in
harness between
ECM and combi-
nation meter con-
nector
Poor contact in
coupling connector
5 CHECK POOR CONTACT.
Check poor contact in combination meter con-
nector.Is there poor contact in combi-
nation meter connector?Repair poor con-
tact in combination
meter connector.Go to step 6.
Page 1149 of 2870
EN(H4SO)-51
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
6 CHECK HARNESS BETWEEN COMBINA-
TION METER AND IGNITION SWITCH CON-
NECTOR.
1) Turn the ignition switch to ON.
2) Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i12) No. 9 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 7.Check the follow-
ing and repair if
necessary.
N
OTE:
Broken down
ignition relay.
Blown out fuse
(No. 5)
If replaced fuse
(No. 5) blows eas-
ily, check the har-
ness for short
circuit of harness
between fuse (No.
5) and ignition
relay connector.
Open or short
circuit in harness
between fuse (No.
5) and battery ter-
minal
Open circuit in
harness between
fuse (No. 5) and
ignition relay con-
nector
Poor contact in
ignition relay con-
nector
Poor contact in
ignition switch con-
nector
7 CHECK BULB.Is the malfunction indicator
light bulb OK?Repair combina-
tion meter connec-
tor.Replace the bulb. Step Check Yes No
Page 1150 of 2870
EN(H4SO)-52
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
D: MALFUNCTION INDICATOR LIGHT DOES NOT GO OFF.
DIAGNOSIS:
The malfunction indicator light circuit is shorted.
TROUBLE SYMPTOM:
Although malfunction indicator light comes on when the engine runs, DTC is not shown on the Subaru Select
Monitor display.
WIRING DIAGRAM:
Step Check Yes No
1 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Turn the ignition switch to ON.Does malfunction indicator
light illuminate?Repair short circuit
in harness
between combina-
tion meter and
ECM connector.Replace the ECM.
Engine Control
Module (ECM).>
EN-00259
i10
123456789101112131415161718192021222324252627282930
BATTERY
1
B72
B134IGNITION
SWITCH
i12 COMBINATION
METER
A:
i10 B:
SBF-44
28
ECM
B9A1
i12
1234568791011121314
B134
1234567891011121314151617181920212223242526272829303132333435
B72
34
12
SBF-1No.14
B37
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
B38
219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
B37
i2
B38
i3165
LHD
LHDRHD
RHD
i3i3
B381317
LHD
LHDRHD
RHD B38
A: B: