Subaru Legacy 2004 Service Manual page 3494

AIRBAG SYSTEM (DIAGNOSTICS)
3. General Description
A: CAUTION
• When servicing a vehicle, be sure to turn the ig-
nition switch to OFF, disconnect the ground cable
from battery, and wait for more than 20 seconds
before starting work.
• The airbag system is equipped with a backup
power source. If the airbag system is serviced with-
in 20 seconds from the ground cable is disconnect-
ed, it may inflate.
• If sensors, airbag module, airbag control module,
pretensioner and harness are deformed or dam-
aged, replace them with new parts.
• Do not use the airbag system and pretensioners
on other vehicles. When replacing parts, be sure to
replace them with new ones.
• When checking the airbag system, be sure to
use a digital circuit tester. Use of an analog circuit
tester may cause the airbag to activate erroneous-
ly.
General Description
• When checking, use a test harness (1). Do not
directly apply the tester probe to any connector ter-
minal of the airbag.
IN-00203
• Do not drop the airbag module, subject them to
high temperature over 93!C (199!F), or let water,
oil or grease get on them; the internal parts may be
damaged and reliability is greatly lowered.
AB-00120
AB-00121
AB(diag)-4
(1)
AB-00122
AB-00123