Subaru Legacy 2005 Service Manual page 3664

AIRBAG SYSTEM (DIAGNOSTICS)
2. MODEL WITHOUT CURTAIN AIRBAG
Step
1 CHECK SEAT BELT PRETENSIONER.
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB26) from seat
belt pretensioner (RH).
3) Connect the connector (1N) in the test har-
ness N to the connector (AB26).
4) Connect the airbag resistor to connector
(2N) in the test harness N.
5) Connect the battery ground cable and turn
the ignition switch to ON.
2 CHECK AIRBAG REAR HARNESS (PRE-
TENSIONER 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 connectors (AB17) and
(AB18) from airbag control module.
4) Connect the connector (1R) in the test har-
ness R to connector (AB18).
5) Connect the battery ground cable and turn
the ignition switch to ON.
6) Measure the voltage between connector
(3R) in the test harness R and chassis ground.
Connector & terminal
(3R) No. 19 (+) — Chassis ground (
(3R) No. 17 (+) — Chassis ground (
Diagnostic Chart with Trouble Code
Does the airbag warning light
illuminate for 6 seconds and go
off?
Is the voltage less than 1 V?
−
):
−
):
AB(diag)-92
Check
Replace the seat
belt pretensioner
(RH). <Ref. to SB-
14, Front Seat
Belt.>
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.