Subaru B9 TRIBECA WX 2007 Manual page 208

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Step
1 CHECK POOR CONTACT OF CONNEC-
TORS.
Check for poor contact of the connectors
between the airbag control module, curtain air-
bag module LH and the curtain airbag sensor
LH.
2 CHECK CURTAIN AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB31) from cur-
tain airbag module (LH), and connect the con-
nector (1N) in test harness N to connector
(AB31).
3) Connect the airbag resistor to the connector
(2N) of test harness N.
4) Connect the battery ground terminal and
turn the ignition switch to ON.
3 CHECK AIRBAG REAR HARNESS LH (CUR-
TAIN AIRBAG MODULE HARNESS LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB21) from seat
belt pretensioner (LH).
3) Disconnect the connector (AB19) from side
airbag module (LH).
4) Disconnect the airbag resistor from test har-
ness F.
5) Disconnect the connector (AB17) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB17).
7) Measure the resistance between connector
(5U) in the test harness U and connector (2N) in
the test harness N.
Connector & terminal
(5U) No. 1 — (2N) No. 2:
(5U) No. 3 — (2N) No. 1:
4 CHECK AIRBAG REAR HARNESS LH (CUR-
TAIN AIRBAG MODULE HARNESS LH).
Measure the resistance between connector
(5U) terminals in the test harness U.
Connector & terminal
(5U) No. 1 — (5U) No. 3:
5 CHECK AIRBAG REAR HARNESS LH (CUR-
TAIN AIRBAG MODULE HARNESS LH).
Measure the resistance between connector
(5U) in the test harness U and chassis ground.
Connector & terminal
(5U) No. 1 — Chassis ground:
(5U) No. 3 — Chassis ground:
6 CHECK AIRBAG CONTROL MODULE.
1) Connect all the 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 more than 1
MΩ?
Is the resistance more than 1
MΩ?
Is the same DTC displayed?
AB(diag)-133
AIRBAG SYSTEM (DIAGNOSTICS)
Check Yes
Replace the airbag
rear harness LH
along with the body
harness.
Replace the cur-
tain airbag module
(LH). <Ref. to AB-
18, Curtain Airbag
Module.>
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 the body
harness.
Replace the airbag
rear harness LH
along with the body
harness.
Replace the airbag
rear harness LH
along with the body
harness.
Go to step 7.