Subaru Legacy 2002 Service Manual page 3302

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK SEAT BELT PRETENSIONER.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB21) from the
seatbelt pretensioner (LH). <Ref. to SB-8,
Front Seat Belt.>
3) Connect the connector (1F) in test harness
F to (AB21).
4) Connect the airbag resistor to the connec-
tor (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 the airbag resistor from the test
harness.
3) Disconnect the connector (AB20) from
(AB19).
4) Disconnect the connectors (AB17) and
(AB18) from the airbag control module. <Ref.
to AB-17, Airbag Control Module.>
5) Connect the connector (1I) in test harness I
or I2 to the connector (AB17).
6) Measure the resistance between connector
(3I) in test harness I or I2 and the connector
(3F) in test harness F.
Connector & terminal
(3I) No. 11 — (3F) No. 4:
(3I) No. 13 — (3F) No. 3:
3 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance of the connector (3I)
in test harness I or I2.
Connector & terminal
(3I) No. 11 — No. 13:
4 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance between the connec-
tor (3I) in test harness I or I2 and the chassis
ground.
Connector & terminal
(3I) No. 11 — Chassis ground:
(3I) No. 13 — Chassis ground:
Step
Does the airbag warning
light operate properly?
Is the resistance less than
10 Ω?
Is the resistance more than
1 MΩ?
Is the resistance more than
1 MΩ?
AB-73
Airbag System (Diagnostics)
Check Yes
Replace seat belt
pretensioner (LH).
<Ref. to SB-8,
Front Seat Belt.>
Go to step 3.
Go to step 4.
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.>
Replace side air-
bag harness.
<Ref. to AB-16,
Side Airbag Har-
ness.>
Replace side air-
bag harness.
<Ref. to AB-16,
Side Airbag Har-
ness.>