Subaru Impreza 2003 Service Manual page 2888

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 (AB20) from the
seat belt pretensioner (RH). <Ref. to SB-12,
Front Seat Belt.>
3)Disconnect the connector (AB28) from
(AB11), and connect the connector (1F) in test
harness F to (AB11).
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 (RH).
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Disconnect the airbag resistor from test har-
ness F.
3)Disconnect the connector (AB8) from air bag
control module. <Ref. to AB-16, Airbag Control
Module.>
4)Connect the connector (1R) in test harness
R to connector (AB8).
5)Measure the resistance between connector
(3R) in test harness R and connector (3F) in
test harness F.
Connector & terminal
(3R) No. 20 — (3F) No. 4:
(3R) No. 18 — (3F) No. 3:
3 CHECK SIDE AIRBAG HARNESS (RH).
Measure the resistance of the connector (3R)
in test harness R.
Connector & terminal
(3R) No. 20 — (3R) No. 18:
4 CHECK SIDE AIRBAG HARNESS (RH).
Measure the resistance of the connector (3F)
in test harness F.
Connector & terminal
(3F) No. 3 — (3F) No. 4:
5 CHECK SIDE AIRBAG HARNESS (RH).
Measure the resistance between connector
(3F) in test harness F and the chassis ground.
Connector & terminal
(3F) No. 3 — Chassis ground:
(3F) No. 4 — Chassis ground:
6 CHECK SIDE AIRBAG HARNESS (RH).
Measure the resistance between connector
(3R) in test harness R and the chassis ground.
Connector & terminal
(3R) No. 20 — Chassis ground:
(3R) No. 18 — Chassis ground:
Check
Does the airbag warning light
operate properly?
Is the resistance less than 10
Ω?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
AB-62
Yes
Replace the front Go to step 2.
seat with side air-
bag module (RH).
<Ref. to SE-6,
Front Seat.>
Go to step 3. Replace the body
harness with side
airbag harness.
Go to step 4. Replace the body
harness with side
airbag harness.
Go to step 5. Replace the body
harness with side
airbag harness.
Go to step 6. Replace the body
harness with side
airbag harness.
Replace the airbag Replace the body
control module. harness with side
<Ref. to AB-16, airbag harness.
Airbag Control
Module.>
No