Subaru Legacy 2002 Service Manual page 3294

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK SIDE AIRBAG MODULE.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect connector (AB21) from the seat
belt pretensioner (LH). <Ref. to SB-8, Front
Seat Belt.>
3) Disconnect connector (AB20) from (AB19),
and connect connector (1F) in test harness F
to (AB19).
4) Connect airbag resistor to connector (3F)
in test harness F.
5) Connect the battery ground cable and turn
the ignition switch ON.
2 CHECK SIDE AIRBAG HARNESS (LH).
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect airbag resistor from the test
harness.
3) Disconnect the connector (AB17) from the
airbag control module. <Ref. to AB-17, Airbag
Control Module.>
4) Connect connector (1I) in test harness I or
I2 to connector (AB17).
5) Connect the battery ground cable, and turn
the ignition switch ON.
6) Measure the voltage between connector
(3I) in test harness I or I2 and the chassis
ground.
Connector & terminal
(3I) No. 10 (+) — Chassis ground (−):
(3I) No. 12 (+) — Chassis ground (−):
Step
Does air bag warning light
operate properly?
Is the voltage less than 1
V?
AB-65
Airbag System (Diagnostics)
Check Yes
Replace front seat
with side airbag
module (LH).
<Ref. to SE-7,
Front Seat.>
Replace the air-
bag control mod-
ule. <Ref. to
AB-17, Airbag
Control Module.>
No
Go to step 2.
Replace side air-
bag harness.
<Ref. to AB-16,
Side Airbag Har-
ness.>