Subaru 2003 LEGACY Quick Reference Index page 44

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
AIRBAG SYSTEM (DIAGNOSTICS)
G: DTC 23
DIAGNOSIS:
(AB6), (AB17) and (AB18) are not connected properly to airbag control module.
CAUTION:
Before diagnosing the airbag system, be sure to turn the ignition switch OFF, disconnect the ground
cable from the battery, and wait more than 20 seconds before starting to work.
1 CHECK POOR CONTACT IN CONNECTORS
(AB6), (AB17) and (AB18).
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more
than 20 seconds.
2) Disconnect the connectors (AB6), (AB17)
and (AB18) from the airbag control module.
<Ref. to AB-17, Airbag Control Module.>
Check if rust or damage appear on the har-
ness connector and the control module
connector.
2 CHECK POOR CONTACT IN CONNECTORS
(AB6), (AB17) and (AB18).
1) Ensure that connectors are firmly recon-
nected.
2) Connect the battery ground cable and turn
the ignition switch ON.
Does the air bag warning light operate
properly?
Step Value
Rust or damage on the har-
ness connector and the control
module are not found.
Operates properly.
AB-42
Yes
Go to step 2. Replace the airbag
control module.
<Ref. to AB-17,
Airbag Control
Module.> Replace
airbag main har-
ness. <Ref. to AB-
15, Main Har-
ness.> Replace
side airbag har-
ness. <Ref. to AB-
16, Side Airbag
Harness.>
Finish the diagno- Replace the airbag
sis. control module.
<Ref. to AB-17,
Airbag Control
Module.>
No