Subaru Legacy 2005 Service Manual page 3624

AIRBAG SYSTEM (DIAGNOSTICS)
G: DTC 23 CONNECTOR TO AIRBAG ECU
DTC DETECTING CONDITION:
(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 battery, and wait more than 20 seconds before starting to work.
Step
1 CHECK POOR CONTACTS IN CONNEC-
TORS (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 airbag control module.
2 CHECK POOR CONTACTS IN CONNEC-
TORS (AB6), (AB17) AND (AB18).
1) Ensure that the connectors are firmly
reconnected.
2) Connect the battery ground cable and turn
the ignition switch to ON.
Diagnostic Chart with Trouble Code
Is there rust or damage on the
harness connector and the
control module connector?
Does the airbag warning light
illuminate for 6 seconds and go
off?
AB(diag)-52
Check
Replace the airbag
control module.
<Ref. to AB-22,
Airbag Control
Module.> Or
replace the body
harness with air-
bag main harness
or replace the
body harness with
airbag rear har-
ness.
Finish the diagno-
sis.
Yes No
Go to step 2.
Replace the airbag
control module.
<Ref. to AB-22,
Airbag Control
Module.>