Subaru Legacy 2002 Service Manual page 3285

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
Airbag System (Diagnostics)
No.
6 CHECK AIRBAG MAIN HARNESS.
Measure the resistance between connector
(3I) in the test harness I or I2 and the chassis
ground.
Connector & terminal
(3I) No. 3 — Chassis ground:
(3I) No. 1 — Chassis ground:
7 CHECK FRONT SUB-SENSOR HARNESS
(LH).
1) Connect connector (1F) in test harness F
to connector (AB12).
2) Measure the resistance between connector
(3H) in test harness H and connector (3F) in
test harness F.
Connector & terminal
(3F) No. 3 — (3H) No. 5:
(3F) No. 4 — (3H) No. 6:
8 CHECK FRONT SUB-SENSOR 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:
9 CHECK FRONT SUB-SENSOR (LH).
1) Connect connector (2H) in test harness H
to front sub-sensor (LH).
2) Measure the resistance of the connector
(3H) in test harness H.
Connector & terminal
(3H) No. 3 — No. 4:
10 CHECK FRONT SUB-SENSOR (LH).
Measure the resistance between connector
(3H) in test harness H and the chassis
ground.
Connector & terminal
(3H) No. 3 — Chassis ground:
(3H) No. 4 — Chassis ground:
Step
Is the resistance more than
1 MΩ?
Is the resistance less than
10 Ω?
Is the resistance more than
1 MΩ?
Is the resistance between
750Ω and 1 KΩ?
Is the resistance more than
1 MΩ?
AB-56
Check Yes
Go to step 7.
Go to step 8.
Go to step 9.
Go to step 10.
Finish the diagno-
sis.
No
Replace the air-
bag main har-
ness. <Ref. to
AB-15, Main Har-
ness.>
Replace the front
sub-sensor har-
ness (LH). <Ref.
to AB-21, Front
Sub Sensor Har-
ness.>
Replace the front
sub-sensor har-
ness (LH). <Ref.
to AB-21, Front
Sub Sensor Har-
ness.>
Replace the front
sub-sensor (LH).
<Ref. to AB-20,
Front Sub Sen-
sor.>
Replace the front
sub-sensor (LH).
<Ref. to AB-20,
Front Sub Sen-
sor.>