Subaru Legacy 2002 Service Manual page 3268

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK PASSENGER'S AIRBAG MODULE.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Pull out the two stopper pins and lower the
glove box.
3) Disconnect the connector (AB10) from
(AB9).
4) Connect the connector (1F) in test harness
F to connector (AB9).
5) Connect the airbag resistor to connector
(3F) in test harness F.
6) Connect the battery ground cable and turn
the ignition switch ON.
2 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the airbag resistor from the
connector (3F) in test harness F.
3) Remove lower cover and disconnect the
connector (AB3) from (AB8).
4) Disconnect the connector (AB6) from the
airbag control module, and connect the con-
nector (1I) in test harness I or I2. <Ref. to
AB-17, Airbag Control Module.>
5) Measure the resistance between connector
(2I) in test harness I or I2 and the connector
(3F) in test harness F.
Connector & terminal
(2I) No. 2 — (3F) No. 4:
(2I) No. 5 — (3F) No. 3:
3 CHECK AIRBAG MAIN HARNESS.
Measure the resistance of the connector (2I)
in test harness I or I2.
Connector & terminal
(2I) No. 2 — No. 5:
(2I) No. 2 — Chassis ground:
(2I) No. 5 — Chassis ground:
Step
Does the airbag warning
light operate properly?
Is the resistance less than
10 Ω?
Is the resistance more than
1 MΩ?
AB-39
Airbag System (Diagnostics)
Check Yes
Replace the pas-
senger airbag
module. <Ref. to
AB-13, Passen-
ger's Airbag Mod-
ule.>
Go to step 3.
Replace airbag
control module.
<Ref. to AB-17,
Airbag Control
Module.>
No
Go to step 2.
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.>
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.>