Subaru Impreza 2003, Service Manual

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IM-3
IMMOBILIZER (DIAGNOSTICS)
GENERAL DESCRIPTION
2. General Description
A: CAUTION
CAUTION:
• The airbag system wiring harness is routed
near the immobilizer control module. All airbag
system wiring harness and connectors are col-
ored yellow. Do not use electrical test equip-
ment 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 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 immobilizer indicator 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) Ignition switch position
(2) Sec.
IM-00003
ON
OFF
5 8
(2)
(1)