Immobilizer System (Diagnostics): General Description: Caution

CAUTION:

Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits.
Be careful not to damage the airbag system wiring harness.
While diagnostic items are being checked, do not operate radios, portable telephones, etc. which emit electromagnetic waves near or inside the vehicle.

Fig 1: Caution For Operating Radios And Portable Phones Near Diagnostic Items
Courtesy of SUBARU OF AMERICA, INC.
When turning the ignition switch to 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 on a key holder, remove it from the key holder before performing diagnoses.

Fig 2: Caution For Turning Ignition Switch ON And OFF
Courtesy of SUBARU OF AMERICA, INC.
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.

Fig 3: Ignition Switch Operating Timing Pattern
Courtesy of SUBARU OF AMERICA, INC.
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 security indicator light begins to flash. And then start the engine again.
Before performing the diagnostics, obtain all keys for the vehicle from the owner.
Do not register a body integrated unit already registered to another vehicle to diagnose failures or inspect functions.