Subaru Legacy 2003 Service Manual page 3610

Step
1 CHECK COMBINATION METER.
Turn the ignition switch ON, and confirm that
warning lights equipped in the combination
meter are turned on.
Do warning lights not for the airbag turn on?
2 CHECK FUSE NO. 5 (IN MAIN FUSE BOX).
Remove fuse No. 5 and perform visual inspec-
tion.
Is fuse No. 5 (in main fuse box) blown?
3 CHECK AIRBAG WARNING LIGHT CIRCUIT
(IN COMBINATION METER).
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more
than 20 seconds.
2) Disconnect the connector (AB1) from
(B31).
3) Connect the battery ground cable and turn
the ignition switch ON.
Is the airbag warning light turned on?
4 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 the connector (AB6) from the
airbag control module. <Ref. to AB-17, Air-
bag Control Module.>
4) Connect the battery ground cable and turn
the ignition switch ON.
Is the airbag warning light turned on?
AIRBAG WARNING LIGHT FAILURE
Warning lights not for the air-
bag turn ON.
Fuse No. 5 is not blown.
Airbag warning light turns ON. Go to step 4.
Airbag warning light turns ON. Replace the airbag
AB-27
AIRBAG SYSTEM (DIAGNOSTICS)
Value
Go to step 2.
Go to step 3.
control module.
<Ref. to AB-17,
Airbag Control
Module.>
Yes No
Repair combina-
tion meter power
supply. <Ref. to
IDI-4, Combina-
tion Meter Sys-
tem.>
Replace fuse No.
5. If fuse No. 5
blows again, go to
step 3.
Replace airbag
warning light bulb
or combination
meter printed cir-
cuit. <Ref. to IDI-
14, Combination
Meter Assembly.>
Or repair the body
harness.
Replace airbag
main harness.
<Ref. to AB-17,
Airbag Control
Module.>