Subaru 2003 LEGACY Quick Reference Index page 55

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK FRONT SUB-SENSOR (LH) AND
FRONT SUB-SENSOR HARNESS (RH).
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more
than 20 seconds.
2) Disconnect connector (AB6) from the air-
bag control module, and connect connector
(1I) in the test harness I2 to connector
(AB6). <Ref. to AB-17, Airbag Control
Module.>
3) Measure the resistance of the connector
(3I) in the test harness I2.
Connector & terminal
(3I) No. 1 — No. 3:
Is the measured value within the specified
range?
2 CHECK FRONT SUB-SENSOR (LH) AND
FRONT SUB-SENSOR HARNESS (RH).
Measure the resistance between connector
(3I) in test harness I2 and the chassis ground.
Connector & terminal
(3I) No. 1 — Chassis ground:
(3I) No. 3 — Chassis ground:
Does the measured value exceed the specified
value?
3 CHECK AIRBAG MAIN HARNESS AND
FRONT SUB-SENSOR HARNESS (LH).
1) Disconnect the connector (AB13) from the
front sub-sensor. <Ref. to AB-20, Front
Sub Sensor.>
2) Connect connector (1H) in test harness H
to connector (AB13).
3) Measure the resistance between connector
(3I) in test harness I2 and connector (3H) in
test harness H.
Connector & terminal
(3I) No. 3 — (3H) No. 5:
(3I) No. 1 — (3H) No. 6:
Is the measured value less than the speci-
fied value?
4 CHECK AIRBAG MAIN HARNESS AND
FRONT SUB-SENSOR HARNESS (LH).
Measure the resistance between connector
(3I) in test harness I2 and the chassis ground.
Connector & terminal
(3I) No. 3 — Chassis ground:
(3I) No. 1 — Chassis ground:
Does the measured value exceed the specified
value?
Value
750 Ω — 1 KΩ
1 MΩ
10 Ω
1 MΩ
AB-53
AIRBAG SYSTEM (DIAGNOSTICS)
Yes
Go to step 2. Go to step 3.
Replace the air- Go to step 3.
bag control mod-
ule. <Ref. to AB-
17, Airbag Control
Module.>
Go to step 4. Go to step 5.
Go to step 9. Go to step 5.
No