Subaru B9 TRIBECA WX 2007 Manual page 211

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AIRBAG SYSTEM (DIAGNOSTICS)
Step
1 CHECK POOR CONTACT OF CONNEC-
TORS.
Check for poor contact of the connectors
between the airbag control module, curtain air-
bag module RH and the curtain airbag sensor
RH.
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 (AB33) from cur-
tain airbag module (RH), and connect the con-
nector (1N) in test harness N to connector
(AB33).
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 RH (CUR-
TAIN AIRBAG MODULE HARNESS RH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB26) from seat
belt pretensioner (RH).
3) Disconnect the connector (AB24) from side
airbag module (RH).
4) Disconnect the airbag resistor from test har-
ness F.
5) Disconnect the connector (AB18) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB18).
7) Connect the battery ground terminal and
turn the ignition switch to ON.
8) Measure the voltage between connector
(5U) in the test harness U and chassis ground.
Connector & terminal
(5U) No. 6 (+) — Chassis ground (–):
(5U) No. 8 (+) — Chassis ground (–):
4 CHECK AIRBAG CONTROL MODULE.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
5 CHECK ANY OTHER DTC ON DISPLAY.
Diagnostic Chart with Trouble Code
Is there poor contact?
Does the airbag warning light
illuminate for 6 seconds and go
off?
Is the voltage less than 1 V?
Is the same DTC displayed?
Is any other DTC displayed?
AB(diag)-136
Check Yes
Replace the airbag
rear harness RH
along with body
harness.
Replace the cur-
tain airbag module
(RH). <Ref. to AB-
18, Curtain Airbag
Module.>
Go to step 4.
Replace the airbag
control module.
<Ref. to AB-19,
Airbag Control
Module.>
Check DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
AB(diag)-47, List
of Diagnostic Trou-
ble Code (DTC).>
No
Go to step 2.
Go to step 3.
Replace the airbag
rear harness RH
along with body
harness.
Go to step 5.
Finish the diagno-
sis.