Subaru Impreza 2002 Service Manual page 3356

Step
1 CHECK SEAT BELT PRETENSIONER.
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Disconnect the connector (AB21) from the
seat belt pretensioner (LH). <Ref. to SB-8,
Front Seat Belt.>
3)Connect the connector (1L) in test harness L
to (AB21).
4)Connect the airbag resistor to the connector
(3L) in test harness L.
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 (AB20) from
(AB19).
4)Disconnect the connectors (AB17) and
(AB18) from the airbag control module. <Ref.
to AB-15, Airbag Control Module.>
5)Connect the connector (1I) in test harness I
or I2 to the connector (AB17).
6)Measure the resistance between connector
(3I) in test harness I or I2 and the connector
(3L) in test harness L.
Connector & terminal
(3I) No. 11 — (3L) No. 6:
(3I) No. 13 — (3L) No. 5:
3 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance of the connector (3I) in
test harness I or I2.
Connector & terminal
(3I) No. 11 — No. 13:
4 CHECK SIDE AIRBAG HARNESS (LH).
Measure the resistance between the connector
(3I) in test harness I or I2 and the chassis
ground.
Connector & terminal
(3I) No. 11 — Chassis ground:
(3I) No. 13 — Chassis ground:
DIAGNOSTIC CHART WITH TROUBLE CODE
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?
AB-77
AIRBAG SYSTEM (DIAGNOSTICS)
Yes
Replace the seat Go to step 2.
belt pretensioner
(LH). <Ref. to SB-
8, Front Seat
Belt.>
Go to step 3. Replace the body
harness with side
airbag harness.
Go to step 4. Replace the body
harness with side
airbag harness.
Replace the airbag Replace the body
control module. harness with side
<Ref. to AB-15, airbag harness.
Airbag Control
Module.>
No