Subaru Legacy 2002 Service Manual page 3265

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
Airbag System (Diagnostics)
No.
2 CHECK ROLL CONNECTOR.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 second.
2) Disconnect the test harness from the con-
nector (AB7).
3) Remove the lower cover panel, disconnect
the connector (AB3) from (AB8) and connect
the connector (1F) in test harness F to con-
nector (AB8).
4) Connect the airbag resistor to connector
(3F) in test harness F.
5) Connect the battery ground cable and turn
the ignition switch ON.
3 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch OFF, disconnect
the ground cable, and wait more than 20 sec-
onds.
2) Disconnect the airbag resistor from the
connector (3F) in test harness F.
3) Remove the glove box, <Ref. to AB-13,
REMOVAL, Passenger's Airbag Module.> and
disconnect connectors (AB10) and (AB9).
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. 1 — (3F) No. 4:
(2I) No. 4 — (3F) No. 3:
4 CHECK AIRBAG MAIN HARNESS.
Measure the resistance of the connector (2I)
in test harness I or I2.
Connector & terminal
(2I) No. 1 — No. 4:
(2I) No. 4 — Chassis ground:
(2I) No. 1 — 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-36
Check Yes
Replace the roll
connector. <Ref.
to AB-19, Roll
Connector.>
Go to step 4.
Replace the air-
bag control mod-
ule. <Ref. to
AB-17, Airbag
Control Module.>
No
Go to step 3.
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.>
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.>