Subaru Legacy 2002 Service Manual page 3255

Airbag System (Diagnostics)
No.
2 CHECK AIRBAG WARNING LIGHT.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (1A) in test harness
A to the body harness connector (B31).
3) Connect the battery ground cable and turn
the ignition switch ON.
4) Connect two connectors, (3A) and (4A) in
test harness A.
3 CHECK BODY HARNESS.
Check the body harness.
NOTE:
After problem has been eliminated, discon-
nect connectors (3A) and (4A).
4 CHECK POOR CONTACT.
Confirm that firm contact is secured between
the air bag control module and the connector
(AB6). <Ref. to AB-17, Airbag Control Mod-
ule.>
5 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect connectors (AB3) and (AB8).
4) Pull out the two stopper pins and lower the
glove box and disconnect connectors (AB10)
and (AB9).
5) Disconnect the connector (AB6) from the
airbag control module, and connect the con-
nector (1I) in test harness I or I2. <Ref. to
AB-17, Airbag Control Module.>
6) Connect the battery ground cable and turn
the ignition switch ON.
7) Connect connectors (4I) and (5I) in test
harness I or I2.
NOTE:
After problem has been eliminated, discon-
nect connectors (4I) and (5I).
6 CHECK GROUNDING CIRCUIT.
1) Turn the ignition switch OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB1) from the
body harness connector (B31).
3) Connect the connector (1A) in test harness
A to body harness connector (B31).
4) Measure the resistance between connector
(5A) in test harness A and the chassis
ground.
Connector & terminal
(5A) No. 17 — Chassis ground:
(5A) No. 18 — Chassis ground:
AIRBAG WARNING LIGHT FAILURE
Step
Is the airbag warning light
turned off?
Is the anything unusual to
body harness?
Is the poor contact in con-
nector (AB6)?
Is the airbag warning light
turned off?
Is the resistance less than
10 Ω?
AB-26
Check Yes
Go to step 4.
Repair the body
harness.
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.> or
Replace the air-
bag control mod-
ule. <Ref. to
AB-17, Airbag
Control Module.>
Go to step 6.
Go to step 7.
No
Go to step 3.
Replace combina-
tion meter printed
circuit. <Ref. to
IDI-15, Combina-
tion Meter Assem-
bly.>
Go to step 5.
Replace airbag
main harness.
<Ref. to AB-15,
Main Harness.>
Repair body-
grounding circuit.