2004 SUBARU FORESTER immobilizer

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM

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-4
IMMOBILIZER (DIAGNOSTIC)
General Description
B: PREPARATION TOOL
1. SPECIAL TOOL
2. GENERAL TOOL
ILLUSTRATION TOOLNUMBER DESCRIPTION REMARKS
24082AA230
(Newly adopted tool)CARTRIDGE Troubleshooting for electrical systems.
22771AA030 SUBARUSELECT
MONITOR KITTroubleshooting for electrical systems.
English:
22771AA030 (Without printer)
German:
22771AA070 (Without printer)
 French:
22771AA080 (Without printer)
 Spanish:
22771AA090 (Without printer)
TOOLNAME REMARKS
Circuit tester Used for measuring resistance, voltage and ampere.
ST24082AA230
ST22771AA030