Subaru B9 TRIBECA WX 2007 Manual page 158

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Step
1 CHECK POOR CONTACT IN CONNECTORS.
Check for poor contact of the connectors
between the airbag control module and the
buckle switch LH.
2 CHECK SEAT BELT BUCKLE SWITCH (LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait for 20 sec-
onds or more.
2) Disconnect the connector (AB51) from the
buckle switch (LH).
3) Connect the connector (1Y) in the test har-
ness Y to connector (AB51).
4) Connect the battery ground terminal and
turn the ignition switch to ON.
3 CHECK AIRBAG REAR HARNESS (BUCKLE
SWITCH HARNESS (LH)).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait for 20 sec-
onds or more.
2) Disconnect the side airbag module connec-
tor (LH) (AB24) and (AB25).
3) Disconnect the connector (AB31) from cur-
tain airbag module (LH).
4) Disconnect the connector (AB21) from seat
belt pretensioner (LH).
5) Disconnect each connector from airbag
control module, connect the connector (1U) in
the test harness U to connector (AB17).
6) Disconnect the seat belt buckle switch (LH),
and then connect the connector (1D) in the test
harness D to connector (AB51).
7) Measure the resistance between connec-
tors (4U) and (5U) in the test harness U and
connector (3D) in the test harness D.
Connector & terminal
(4U) No. 11 — (3D) No. 3:
(4U) No. 9 — (3D) No. 4:
4 CHECK AIRBAG REAR HARNESS.
Measure the resistance between connector
(4U) terminals in the test harness U.
Connector & terminal
(4U) No. 9 — (4U) No. 11:
5 CHECK AIRBAG REAR HARNESS.
Measure the resistance between connector
(4U) in the test harness U and chassis ground.
Connector & terminal
(4U) No. 9 — Chassis ground:
(4U) No. 11 — Chassis ground:
6 CHECK AIRBAG CONTROL MODULE.
1) Connect all connectors.
2) Erase the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
Diagnostic Chart with Trouble Code
Is there poor contact?
Does the airbag warning light
illuminate for 6 seconds and go
off?
Is the resistance less than 10
Ω?
Is the resistance 1 MΩ or
more?
Is the resistance 1 MΩ or
more?
Is the same DTC displayed?
AB(diag)-83
AIRBAG SYSTEM (DIAGNOSTICS)
Check Yes
Replace the airbag
rear harness LH
along with body
harness.
Replace the seat
belt buckle switch
(LH). <Ref. to SB-
10, Front Seat
Belt.>
Go to step 4.
Go to step 5.
Go to step 6.
Replace the airbag
control module.
<Ref. to AB-19,
Airbag Control
Module.>
No
Go to step 2.
Go to step 3.
Replace the airbag
rear harness LH
along with body
harness.
Replace the airbag
control module.
Replace the airbag
rear harness LH
along with body
harness.
Go to step 7.