engine SUBARU FORESTER 2004 Service Repair Manual

EN(H4DOTC)-47
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” are shown on the display
screen, turn the Subaru Select Monitor to OFF after
turning the ignition switch to OFF.
NOTE:
For detailed operation procedure, refer to the “SUBA-
RU 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:
For detailed operation procedure, refer to the “SUBA-
RU 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.

EN(H4DOTC)-48
ENGINE (DIAGNOSTIC)
Compulsory Valve Operation Check Mode
15.Compulsory Valve Operation
Check Mode
A: OPERATION
1) Prepare the Subaru Select Monitor kit. EN(H4DOTC)-8, PREPARATION TOOL, General
Description.>
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to Subaru Select Monitor.
General Description.>
4) Connect the test mode connector (A) located at
the lower portion of instrument panel (on the driv-
er’s side).5) 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.
6) Turn the ignition switch to ON (engine OFF) and
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» screen,
select the {Actuator ON/OFF Operation} and press
the [YES] key.
12) On the «Actuator ON/OFF Operation» screen,
select the desired compulsory actuator and press
the [YES] key.
EN-00038
EN-00039
EN-00333
(A)
(A) Power switch
EN-00334
EN-00040
(A)

EN(H4DOTC)-49
ENGINE (DIAGNOSTIC)
Compulsory Valve Operation Check Mode
13) Pressing the [NO] key completes the compul-
sory operation check mode.The display will then re-
turn to the «Actuator ON/OFF Operation» screen.
 A list of the support data is shown in the following
table.
NOTE:
 The following parts will be displayed but not func-
tional.
 For detailed operation procedure, refer to the
“SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
Description Display
Compulsory fuel pump relay operation
checkFuel Pump
Compulsory radiator fan relay operation
checkRadiator Fan
Relay
Compulsory air conditioning relay oper-
ation checkA/C Compressor
Relay
Compulsory purge control solenoid
valve operation checkCPC Solenoid
Compulsory wastegate control sole-
noid valve operation checkWastegate con-
trol solenoid
Display
EGR Solenoid
ASV Solenoid
PCV Solenoid
Vent Control Solenoid
FICD Solenoid
Pressure Switching Solenoid1
Pressure Switching Solenoid2
EXH. Bypass Control Permit Flag
AAI Solenoid
Atmospheric pressure switching solenoid

EN(H4DOTC)-50
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
16.Malfunction Indicator Light
A: PROCEDURE
1. Activation of malfunction indicator light. function Indicator Light.>
↓
2. Check that the malfunction indicator light does not come on. DOES NOT COME ON, Malfunction Indicator Light.>
↓
3. Check that the malfunction indicator light does not go off. DOES NOT GO OFF, Malfunction Indicator Light.>
↓
4. Malfunction indicator light does not blink at a cycle of 3 Hz. DOES NOT BLINK AT A CYCLE OF 3 HZ, Malfunction Indicator Light.>
↓
5. Malfunction indicator light remains blinking at a cycle of 3 Hz. REMAINS BLINKING AT A CYCLE OF 3 HZ, Malfunction Indicator Light.>

EN(H4DOTC)-51
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
B: ACTIVATION OF MALFUNCTION
INDICATOR LIGHT
1) When the ignition switch is turned to ON (engine
off), the malfunction indicator light in the combina-
tion meter illuminates.
NOTE:
If the malfunction indicator light does not illuminate,
perform the diagnosis of malfunction indicator light
circuit or the combination meter circuit. EN(H4DOTC)-52, MALFUNCTION INDICATOR
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.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.
(A) Malfunction indicator light
(1) No faulty
(2) Trouble occurs
(3) ON
(4) OFF
(5) Ignition switch ON
(6) Engine start
EN-00335(A)
EN-01679
(1)
(2)
(5)
(6)(3)
(4)
(3)
(4)
(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)

EN(H4DOTC)-52
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 to ON (engine OFF), malfunction indicator light does not operate.
WIRING DIAGRAM:
EN-02309
BATTERYIGNITION
SWITCH
SBF-4SBF-1
B72
B72
B38
B134
ECM
i3
E
14
RHD
RHD
A17
B37
i12 A :
i10 B :
i12i10B134
i3
i2
LHD
LHD
5
COMBINATION
METER
3412
123 456
789 121310 11 14
*
16
B38
i3
B37No.14
*LHD : 17
RHD : 13
B9
A1
34
12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
12345678910111213141516171819202122232425262728293056 7
82 1
94 310
24 22 23 25 11 12 13 14 15
26 27
2816 17
18 19 20 21
33 34 29
32 30 31
A:

EN(H4DOTC)-53
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. 17 (+) — Chassis ground (
−):Is the voltage less than 1 V? Go to step 4.Go to step 2.
2 CHECK POOR CONTACT.Does the malfunction indicator
light come on when shaking or
pulling the ECM connector and
harness?Repair the poor
contact in ECM
connector.Go to step 3.
3 CHECK ECM CONNECTOR.Is the ECM connector correctly
connected?Replace the ECM.
FU(H4DOTC)-50,
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. IDI-10, Combination Meter Assembly.>
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. 17 — (i12) No. 1:Is the resistance less than 1
Ω?Go to step 5.Repair the har-
ness and connec-
tor.
NOTE:
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.
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
(i10) No. 9 (+) — Chassis ground (
−):Is the voltage more than 10 V? Replace the board
of combination
meter. 10, Combination
Meter Assembly.>Check the follow-
ing and repair if
necessary.
N
OTE:
 Blown out of
fuse (No. 14)
 Open or short
circuit in harness
between fuse (No.
14) and battery
terminal
 Poor contact in
ignition switch con-
nector

EN(H4DOTC)-54
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 or OBD-II general scan tool 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.
FU(H4DOTC)-50,
Engine Control
Module (ECM).>
EN-02309
BATTERYIGNITION
SWITCH
SBF-4SBF-1
B72
B72
B38
B134
ECM
i3
E
14
RHD
RHD
A17
B37
i12 A :
i10 B :
i12i10B134
i3
i2
LHD
LHD
5
COMBINATION
METER
3412
123 456
789 121310 11 14
*
16
B38
i3
B37No.14
*LHD : 17
RHD : 13
B9
A1
34
12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
12345678910111213141516171819202122232425262728293056 7
82 1
94 310
24 22 23 25 11 12 13 14 15
26 27
2816 17
18 19 20 21
33 34 29
32 30 31
A:

EN(H4DOTC)-55
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
E: MALFUNCTION INDICATOR LIGHT DOES NOT BLINK AT A CYCLE OF 3 Hz
DIAGNOSIS:
 The malfunction indicator light circuit is open or shorted.
 Test mode connector circuit is in open.
TROUBLE SYMPTOM:
When in inspection mode, malfunction indicator light does not blink at a cycle of 3 Hz.
WIRING DIAGRAM:
EN-02310
BATTERYIGNITION
SWITCH
SBF-4SBF-1
B72
B36B75B76E3F2
E2
B134
B137ECM
i3
EE
14
1611
A17
D15
i12 A :
i10 B :
B125B100B126
A :LHD : 17
RHD : 13
*
D :
RHD
LHDLHD
RHD
9
B9
A1
:LHD
:RHD COMBINATION
METER
*
i2
B37
RHD
RHD
i3
B38
LHD
LHD
16
No.14
F60
B21
5
B72
B21
B75
B134
B76i12
i10
B137
i3: RHD
F60: LHD
34
12
123 456
789 121310 11 14
123
4
56
78
9
1011 12
1314 15 16
1
21
21
21
2
B37
56 7
82 1
94 310
24 22 23 25 11 12 13 14 15
26 27
2816 17
18 19 20 21
33 34 29
32 30 31
567
82 1
94 310
22 23 11 12 13 14 15
24 25
2616 17
18 19 20 21
27 28 29 30 31
123456789101112131415161718192021222324252627282930219
32
1234
5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
2534
12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
A :
B :
1234 5678910 11 12 13 14 15 16 17 18 19 20
F2

EN(H4DOTC)-56
ENGINE (DIAGNOSTIC)
Malfunction Indicator Light
Step Check Yes No
1 CHECK STATUS OF MALFUNCTION INDI-
CATOR LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the test mode connectors
3) Turn the ignition switch to ON.(engine OFF)Does malfunction indicator
light illuminate?Go to step 2.Repair the mal-
function indictor
light circuit. to EN(H4DOTC)-
52, MALFUNC-
TION INDICA-
TOR LIGHT
DOES NOT
COME ON, Mal-
function Indicator
Light.>
2 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 ground
short circuit in har-
ness between
combination meter
and ECM connec-
tor.Go to step 3.
3 CHECK HARNESS BETWEEN TEST MODE
CONNECTOR AND CHASSIS GROUND.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the resistance of harness
between test mode connector and chassis
ground.
Connector & terminal
(B76) No. 1 — Chassis ground:Is the resistance less than 1
Ω?Go to step 4.Repair the har-
ness and connec-
tor.
N
OTE:
In this case repair
the following:
 Open circuit in
harness between
test mode connec-
tor and chassis
ground
4 CHECK POOR CONTACT.
Check poor contact in ECM connector.Is there poor contact in ECM
connector?Repair the poor
contact in ECM
connector.Go to step 5.
5 CHECK HARNESS BETWEEN ECM AND
TEST MODE CONNECTOR.
1) Connect the test mode connector.
2) Measure the resistance of harness
between ECM and chassis ground.
Connector & terminal
(B137) No. 15 — Chassis ground:Is the resistance less than 1
Ω?Go to step 6.Repair open circuit
in harness
between ECM and
test mode connec-
tor.
6 CHECK POOR CONTACT.
Check poor contact in ECM connector.Is there poor contact in ECM
connector?Repair the poor
contact in ECM
connector.Replace the ECM.
FU(H4DOTC)-50,
Engine Control
Module (ECM).>