Subaru Impreza 2003 Service Manual page 2894

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AIRBAG SYSTEM (DIAGNOSTICS)
Step
1 CHECK SIDE AIRBAG MODULE.
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Disconnect the connector (AB19) from the
seat belt pretensioner (LH). <Ref. to SB-12,
Front Seat Belt.>
3)Disconnect the connector (AB29) from
(AB9), and connect the connector (1F) in test
harness F to (AB9).
4)Connect the airbag resistor to connector (3F)
in test harness F.
5)Connect the battery ground cable and turn
the ignition switch to ON.
2 CHECK SIDE AIRBAG HARNESS (LH).
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Disconnect the airbag resistor from the test
harness.
3)Disconnect the connector (AB7) from the air-
bag control module. <Ref. to AB-16, Airbag
Control Module.>
4)Connect the connector (1R) in test harness
R to connector (AB7).
5)Connect the battery ground cable, and turn
the ignition switch to ON.
6)Measure the voltage between connector
(3R) in test harness R and the chassis ground.
Connector & terminal
(3R) No. 12 (+) — Chassis ground ( − − − − ):
(3R) No. 10 (+) — Chassis ground ( − − − − ):
Check
Does the airbag warning light
operate properly?
Is the voltage less than 1 V?
AB-68
Yes
Replace the front Go to step 2.
seat with side air-
bag module (LH).
<Ref. to SE-6,
Front Seat.>
Replace the airbag Replace the body
control module. harness with side
<Ref. to AB-16, airbag harness.
Airbag Control
Module.>
No