2004 SUBARU FORESTER light

FUJI HEAVY INDUSTRIES LTD. G8080GE7
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.HVAC SYSTEM
(HEATER, VENTILATOR AND A/C)AC
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTIC)AC
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTIC) AB
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEM WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOW/MIRROR GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEAT SE
SECURITY AND LOCK SL
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF)SR
EXTERIOR/INTERIOR TRIM EI
EXTERIOR BODY PANEL EB

IMMOBILIZER (DIAGNOSTIC)
IM
Page
1. Basic Diagnostic Procedure ........................................................................2
2. General Description ....................................................................................3
3. Electrical Components Location..................................................................5
4. Immobilizer Control Module I/O Signal........................................................6
5. Subaru Select Monitor.................................................................................7
6. Read Diagnostic Trouble Code (DTC) ........................................................8
7. Clear Memory Mode....................................................................................9
8. Diagnostics Chart for Immobilizer Warning Light ......................................10
9. List of Diagnostic Trouble Code (DTC) .....................................................14
10. Diagnostics Procedure with Diagnostic Trouble Code (DTC) ...................15

IM-2
IMMOBILIZER (DIAGNOSTIC)
Basic Diagnostic Procedure
1. Basic Diagnostic Procedure
A: PROCEDURE
Step Check Yes No
1 CHECK ILLUMINATION OF IMMOBILIZER
WARNING LIGHT.
1) Turn the ignition switch to OFF or ACC
position.
2) Wait at least 60 seconds.Does the immobilizer warning
light blink?Go to step 2.Check the immobi-
lizer warning light
circuit. 10, CHECK
IMMOBILIZER
WARNING CIR-
CUIT, INSPEC-
TION, Diagnostics
Chart for Immobi-
lizer Warning
Light.>
2 CHECK ILLUMINATION OF IMMOBILIZER
WARNING LIGHT.
Remove the key from ignition switch.Does the immobilizer warning
light begin to blink within 1 sec-
ond after the key is removed?Go to step 3.Check the key
switch circuit.
CHECK KEY
WARNING
SWITCH CIR-
CUIT, INSPEC-
TION, Diagnostics
Chart for Immobi-
lizer Warning
Light.>
3 CHECK ENGINE START.
Turn the ignition switch to START position.Does the engine start? Go to step 4.Go to step 5.
4 CHECK ILLUMINATION OF IMMOBILIZER
WARNING LIGHT.
Turn the ignition switch to ON.Does the immobilizer warning
light illuminate?Check the immobi-
lizer warning light
circuit. 10, CHECK
IMMOBILIZER
WARNING CIR-
CUIT, INSPEC-
TION, Diagnostics
Chart for Immobi-
lizer Warning
Light.>Immobilizer sys-
tem is normal.
5 CHECK INDICATION OF DTC ON DISPLAY.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector. Monitor.>
3) Turn the ignition switch and Subaru Select
Monitors witch to ON.
4) Read any DTC on the display. Are DTCs indicated on dis-
play?Go to step 6.Repair the related
parts.
6 PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostics Chart with Trou-
ble Code”. dure with Diagnostic Trouble Code (DTC).>
2) Repair the trouble cause.
3) Perform the clear memory mode.
4) Read any DTC again.Are DTCs indicated on dis-
play?Inspect using
“Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC)”. IM-15, Diagnos-
tics Procedure
with Diagnostic
Trouble Code
(DTC).>Finish the diag-
nostics.

IM-3
IMMOBILIZER (DIAGNOSTIC)
General Description
2. General Description
A: CAUTION
CAUTION:
 The airbag system wiring harnesses rout-
ed near the immobilizer control module. All
airbag system wiring harness and connec-
tors are colored yellow. Do not use electrical
test equipment on these circuits.
 Be careful not to damage the airbag system
wiring harness when servicing the immobilizer
control module.
 While diagnostic items are being checked, do
not operate radios, portable telephones, etc.
which emit electromagnetic waves near or
inside the vehicle.
 When the ignition switch is being turned ON or
OFF while diagnostic items are being checked, do
not allow keys with different ID codes close to the
ignition switch. If the ignition key is in a key
holder, remove it from the holder before carrying
out diagnoses. When repeatedly turning the ignition switch
to ON or OFF while diagnostic items are being
checked, it should be switched in cycles of
“ON” for at least 5 seconds → “OFF” for at least
8 seconds.
 If the engine fails to start with a registered
ignition key, detach the ignition key from ignition
switch and wait for approx. 1 second until immobi-
lizer warning light begins to flash. Start the engine
again.
 Before checking the diagnostic items, obtain
all keys for the vehicle to be checked possessed
by owner.
IM-00001
IM-00002
(1) Ignitions witch position
(2) Sec.
IM-00003
ON
OFF
58
(2) (1)

IM-5
IMMOBILIZER (DIAGNOSTIC)
Electrical Components Location
3. Electrical Components Location
A: LOCATION
NOTE:
IMM ECM location for RHD model is symmetrically
opposite.
(1) Antenna (3) Immobilizer control module (IMM
ECM)(4) Transponder
(2) Immobilizer warning light (LED)
IM-00004
(1)
(2)
(3)(4)

IM-10
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
8. Diagnostics Chart for Immobilizer Warning Light
A: INSPECTION
1. CHECK IMMOBILIZER WARNING CIRCUIT
WIRING DIAGRAM:
IM-00081
F60
B21
RHD
SBF-1
SBF-5SBF-4
BATTERY
IMMOBILIZER
WARNING
LIGHT COMBINATION METER
B141IMM ECM
B37
i2
i2
B37
i12
B37
i2
LHD
RHDLHD
6
RHD
M/B No.2
F/B No.11
IGNITION
SWITCH
91211102
B8
3: RHD MODEL
1: Non-turbo AT MODEL: 14
: MT MODEL AND
TURBO AT MODEL:4
i12B141
34 12
89
10 11125
67
219
32
B38
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
123456789101112131415161718192021222324252627282930
LHDB37
34 12 89
10 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
i10
1
23456789
10
B:
E
A:i10 B:
i11C:
: LHD TURBO MODELLT
: EXCEPT LHD TURBO MODEL
XL
34 12 8910
1112 13 14 15 161718
19 20 21 22567
i2RHD
F2LHD
LHD
LHD
7
F44B61
RHD
RHD
LHD
: LHD MODEL
1
2
i11 C:
LHD
LHD
18
i3
B38
RHD
RHD
3
XL
LT
XL
LT9
1616
F2B100
B21
E2
F60
E3
LHD
RHD
2: LHD MODEL: A4
: RHD MODEL: C5
3: Non-turbo AT MODEL: 22
: MT MODEL AND
TURBO AT MODEL: 18
A:
:
AT:
23 1789 1011121314 15
16 1718456
i2RHDMT:
1234 5678910 11 12 13 14 15 16 17 18 19 20123
4
56
78
9
1011 12
1314 15 16
1234568791011121314
F44
12345678

IM-11
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
Step Check Yes No
1 CHECK IMMOBILIZER WARNING LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
IMM ECM.
3) Connect a resistor (750 Ω) between IMM
ECM harness connector terminal No. 9 and
chassis ground.Does the immobilizer warning
light illuminate?Go to step 2.Go to step 5.
2 CHECK IMM ECM GROUND CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 2, No. 3 — Chassis ground:Is the resistance less than 10
Ω?Go to step 3.Repair the open
circuit of IMMECM
ground circuit.
3 CHECK IMM ECM IGNITION CIRCUIT.
1) Turn the ignition switch to ON. (engine
OFF.)
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 12 (+) — Chassis ground(
−):Is the voltage more than 10 V? Go to step 4.Check the harness
for open or short
between IMM
ECM and ignition
switch.
4 CHECK IMM ECM POWER SUPPLY CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 10, No. 11 (+) — Chassis
ground(
−):Is the voltage more than 10 V? Replace the IMM
ECM 37, Immobilizer
Control Module.>
and then replace
all ignition keys
(including the tran-
sponder). Then
perform teaching
operation. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).Check the harness
for open or short
between IMM
ECM and fuse.
5 CHECK COMBINATION METER CIRCUIT.
1) Remove the combination meter. IDI-10, Combination Meter Assembly.>
2) Measure the voltage between combination
meter harness connector terminal and chassis
ground.
Connector & terminal
(i10) No. 8 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 6.Check the harness
for open or short
between combina-
tion meter and
fuse.
6 CHECK COMBINATION METER CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and combination
meter harness connector terminal.
Connector & terminal
LHD model
(B141) No. 9 — (i12) No. 4:
RHD model
(B141) No. 9 — (i11) No. 5:Is the resistance less than 10
Ω?Faulty LED.
Replace the com-
bination meter
printed circuit.
DISASSEMBLY,
Combination
Meter Assembly.>Repair the har-
ness or connector.

IM-12
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
2. CHECK KEY WARNING SWITCH CIRCUIT
WIRING DIAGRAM:
IM-00006
B74
B61
F44
KEY WARNING
SWITCH
B141IMM ECM
LHD
RHDLHD
RHD
BATTERYM/B No.6
4
12
4
B74
1
2
B141
34 12
89
10 11125
67
F44
3
1
56
78
LHD: LHD MODEL
: RHD MODEL
RHD
2
4