Subaru 2003 LEGACY Quick Reference Index page 27

Step
1 CHECK POOR CONTACT IN CONNECTORS
(AB1) AND (B31).
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more
than 20 seconds.
2) Remove side sill cover. (Driver's side)
3) Confirm that firm contact is secured
between connectors (AB1) and (B31).
Is the poor contact in connectors (AB1) and
(B31)?
2 CHECK POOR CONTACT.
Confirm that firm contact is secured between
the air bag control module and the connector
(AB6). <Ref. to AB-17, REMOVAL, Airbag
Control Module.>
Is the poor contact in connector (AB6)?
3 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more
than 20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect connectors (AB3) and (AB8).
4) Pull out the two stopper pins and lower the
glove box and disconnect connectors
(AB10) and (AB9).
5) Disconnect the connector (AB6) from the
airbag control module, and connect the
connector (1I) in test harness I2. <Ref. to
AB-17, Airbag Control Module.>
6) Connect the battery ground cable and turn
the ignition switch ON.
7) Connect connectors (4I) and (5I) in test har-
ness I2.
NOTE:
After problem has been eliminated, disconnect
connectors (4I) and (5I).
Is the airbag warning light turned off?
4 CHECK AIRBAG MAIN HARNESS.
1) Connect the connector (AB1) to (B31).
2) Disconnect the connector (AB6) from the
airbag control module, and connect the
connector (1I) in test harness I2. <Ref. to
AB-17, Airbag Control Module.>
3) Measure the resistance between connector
(2I) in test harness I2 and the chassis
ground.
Connector & terminal
(2I) No. 9 — Chassis ground:
(2I) No. 10 — Chassis ground:
Is the measured value less than the speci-
fied value?
AIRBAG WARNING LIGHT FAILURE
There is no poor contact.
There is no poor contact.
Airbag warning light turns
OFF.
10 Ω
AB-25
AIRBAG SYSTEM (DIAGNOSTICS)
Value
Go to step 2.
Go to step 3.
Go to step 4.
Replace the airbag
control module.
<Ref. to AB-17,
Airbag Control
Module.>
Yes No
Repair the body
harness or replace
airbag main har-
ness. <Ref. to AB-
15, Main Har-
ness.>
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.> Or
replace the airbag
control module.
<Ref. to AB-17,
Airbag Control
Module.>
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.> Or
replace combina-
tion meter printed
circuit. <Ref. to
IDI-14, Combina-
tion Meter Assem-
bly.> Or repair the
body harness.
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.> Or
repair the body
harness.