Subaru Legacy 2002 Service Manual page 3290

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 the 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 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) Measure the resistance between connector
(3I) in test harness I or I2 and connector (3F)
in test harness F.
Connector & terminal
(3I) No. 10 — (3F) No. 3:
(3I) No. 12 — (3F) No. 4:
3 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance of the connector (3I)
in test harness I or I2.
Connector & terminal
(3I) No. 10 — No. 12:
4 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance of the connector (3F)
in test harness F.
Connector & terminal
(3F) No. 3 — No. 4:
5 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance between connector
(3F) in test harness F and the chassis
ground.
Connector & terminal
(3F) No. 3 — Chassis ground:
(3F) No. 4 — Chassis ground:
6 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance 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 the air bag 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?
Is the resistance more than
1 MΩ?
Is the resistance more than
1 MΩ?
AB-61
Airbag System (Diagnostics)
Check Yes
Replace front seat
with side airbag
module (LH).
<Ref. to SE-7,
Front Seat.>
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Replace airbag
control module.
<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.>
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.>