Subaru Legacy 2005 Service Manual page 3678

AIRBAG SYSTEM (DIAGNOSTICS)
Step
1 CHECK LAP SEAT BELT PRETENSIONER.
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB30) from lap
seat belt pretensioner (RH).
3) Connect the connector (1Q) in the test har-
ness Q to connector (AB30).
4) Connect the airbag resistor to connector
(2Q) in the test harness Q.
5) Connect the battery ground cable and turn
the ignition switch to ON.
2 CHECK AIRBAG REAR HARNESS (SIDE
AIRBAG MODULE HARNESS RH).
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Disconnect the airbag resistor from test
harness.
3) Disconnect the connector (AB24) from side
airbag module (RH).
4) Disconnect the connector (AB26) from seat
belt pretensioner.
5) Disconnect the connector (AB18) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB18).
7) Measure the resistance between connector
(5U) in the test harness U and connector (2Q)
in the test harness Q.
Connector & terminal
(5U) No. 7 — (2Q) No. 1:
(5U) No. 5 — (2Q) No. 2:
3 CHECK AIRBAG REAR HARNESS.
Measure the resistance between connector
(5U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 7 — (5U) No. 5:
(5U) No. 7 — Chassis ground:
(5U) No. 5 — Chassis ground:
Diagnostic Chart with Trouble Code
Does the airbag warning light
illuminate for 6 seconds and go
off?
Is the resistance less than 10
Ω?
Is the resistance more than 1
MΩ?
AB(diag)-106
Check
Replace the lap
seat belt preten-
sioner (RH). <Ref.
to SB-14, OUTER
SEAT BELT
ASSEMBLY,
REMOVAL, Front
Seat Belt.>
Go to step 3.
Replace the airbag
control module.
<Ref. to AB-22,
Airbag Control
Module.>
Yes No
Go to step 2.
Replace the airbag
rear harness with
body harness.
Replace the airbag
rear harness with
body harness.