Subaru Impreza 2002 Service Manual page 3314

Step
2 CHECK AIRBAG WARNING LIGHT.
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Connect the connector (1M) in test harness
M to the body harness connector (B31).
3)Connect the battery ground cable and turn
the ignition switch to ON.
4)Connect two connectors, (3M) and (4M) in
test harness M.
3 CHECK BODY HARNESS.
Check the body harness.
NOTE:
After problem has been eliminated, disconnect
the connectors (3M) and (4M).
4 CHECK POOR CONTACT.
Confirm that firm contact is secured between
the airbag control module and the connector
(AB6). <Ref. to AB-15, Airbag Control Mod-
ule.>
5 CHECK AIRBAG MAIN HARNESS.
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Connect the connector (AB1) to (B31).
3)Disconnect the connectors (AB3) and (AB8).
4)Remove the glove box and disconnect the
connectors (AB10) and (AB9).
5)Disconnect the connector (AB6) from the air-
bag control module, and connect the connector
(1I) in test harness I or I2. <Ref. to AB-15, Air-
bag Control Module.>
6)Connect the battery ground cable and turn
the ignition switch to ON.
7)Connect the connectors (4I) and (5I) in test
harness I or I2.
NOTE:
After problem has been eliminated, disconnect
the connectors (4I) and (5I).
6 CHECK GROUNDING CIRCUIT.
1)Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2)Disconnect the connector (AB6) from the air-
bag control module.
3)Connect the connector (1I) in test harness I
or I2 to body harness connector (AB6).
4)Measure the resistance between connector
(2I) in test harness I or I2 and the chassis
ground.
Connector & terminal
(2I) No. 9 — Chassis ground:
(2I) No. 10 — Chassis ground:
AIRBAG WARNING LIGHT FAILURE
Is the airbag warning light
turned off?
Is the anything unusual to body
harness?
Is the poor contact in connec-
tor (AB6)?
Is the airbag warning light
turned off?
Is the resistance less than 10
Ω?
AB-35
AIRBAG SYSTEM (DIAGNOSTICS)
Check
Go to step 4.
Repair the body
harness.
Replace the body
harness with air-
bag main harness
or Replace the air-
bag control mod-
ule. <Ref. to AB-
15, Airbag Control
Module.>
Go to step 6.
Replace the airbag
control module.
<Ref. to AB-15,
Airbag Control
Module.>
Yes No
Go to step 3.
Replace the com-
bination meter
printed circuit.
<Ref. to IDI-15,
Combination
Meter Assembly.>
Go to step 5.
Replace the body
harness with air-
bag main harness.
Repair the body-
grounding circuit.