Subaru B9 TRIBECA WX 2007 Manual page 111

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AIRBAG SYSTEM (DIAGNOSTICS)
Step
9 CHECK THE HARNESS BETWEEN THE AIR-
BAG CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB6) from airbag
control module.
3) Connect the connector (1U) in the test har-
ness U to connector (AB6).
4) Measure the resistance between connector
(4U) in the test harness U and the data link con-
nector.
Connector & terminal
(4U) No. 18 — (B402) No. 10:
10 CHECK POWER SUPPLY CIRCUIT.
1) Turn the ignition switch to ON.
2) Measure the voltage between connector
(2U) in the test harness U and chassis ground.
Connector & terminal
(2U) No. 1 (+) — Chassis ground (–):
(2U) No. 6 (+) — Chassis ground (–):
11 CHECK BETWEEN THE AIRBAG CONTROL
MODULE AND CHASSIS GROUND.
1) Turn the ignition switch to OFF.
2) Measure the resistance between connector
(2U) in the test harness U and chassis ground.
Connector & terminal
(2U) No. 10 — Chassis ground:
(2U) No. 11 — Chassis ground:
12 CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in the con-
Subaru Select Monitor
Check
Is the resistance less than 10
Ω?
Is the voltage 10 V or more?
Is the resistance less than 10
Ω?
trol module power supply,
ground circuit and data link con-
nector?
AB(diag)-36
Yes No
Go to step 10. Repair the harness
between the airbag
control module and
the data link con-
nector. Or replace
the airbag main
harness along with
the bulkhead har-
ness.
Go to step 11. Repair the harness
between the airbag
control module and
the battery. Or
replace the airbag
main harness
along with the bulk-
head harness.
Go to step 12.
Repair the harness
between the airbag
control module and
the chassis
ground. Or replace
the airbag main
harness along with
the bulkhead har-
ness.
Repair the connec- Replace the airbag
tor. (Replace the control module
harness without only. <Ref. to AB-
repairing the air- 19, REMOVAL, Air-
bag system con- bag Control Mod-
nector.) ule.>