Subaru B9 TRIBECA WX 2007 Manual page 213

asieps_tobira.book 138 ページ ２０１２年２月１０日 金曜日 午後３時２６分
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 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) 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. 1 (+) — Chassis ground (–):
(5U) No. 3 (+) — 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.
AW:DTC BB ROLL OVER:FIRING OUTPUT
This DTC is indicated when the curtain airbag module and the seat belt pretensioner are deployed.
Once this DTC is displayed, the memory cannot be cleared. Replace the following parts.
• Airbag control module<Ref. to AB-19, Airbag Control Module.>
• Curtain airbag module (Operating side) <Ref. to AB-18, Curtain Airbag Module.>
• Curtain airbag sensor (Operating side) <Ref. to AB-21, Curtain Airbag Sensor.>
• Front outer seat belt with pretensioner (operating side) <Ref. to SB-10, Front Seat Belt.>
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)-138
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.
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 LH
along with the body
harness.
Go to step 5.
Finish the diagno-
sis.