Subaru 2009 IMPREZA Service Manual page 2897

AIRBAG SYSTEM (DIAGNOSTICS)
Step
4 CHECK AIRBAG REAR HARNESS (BE-
TWEEN SIDE AIRBAG SENSOR AND CUR-
TAIN AIRBAG SENSOR RH).
1) Disconnect the connector (2V) in the test
harness V from the connector (AB28) of side
airbag sensor (RH).
2) Connect the connector (AB28) of side air-
bag sensor (RH) and the connector (1AI) in the
test harness AI.
3) Connect the connector (2AI) in the test har-
ness AI and the connector (1V) in the test har-
ness V.
4) Disconnect the connector (AB34) from cur-
tain airbag sensor (RH), and connect the con-
nector (2V) in test harness V to connector
(AB34).
5) Measure the resistance between connector
(3V) terminals in the test harness V.
Connector & terminal
(3V) No. 2 — (3V) No. 6:
(3V) No. 1 — (3V) No. 7:
5 CHECK AIRBAG REAR HARNESS (BE-
TWEEN SIDE AIRBAG SENSOR AND CUR-
TAIN AIRBAG SENSOR RH).
Measure the resistance between connector
(3V) in test harness V and chassis ground, and
the resistance between connector (3V) in test
harness V.
Connector & terminal
(3V) No. 2 — Chassis ground:
(3V) No. 1 — Chassis ground:
(3V) No. 2 — (3V) No. 1:
6 CHECK AIRBAG CONTROL MODULE.
1) Connect all connectors.
2) Clear the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
7 REPLACE SIDE AIRBAG SENSOR (RH) AND
CHECK AIRBAG CONTROL MODULE AF-
TER REPLACEMENT.
1) Turn the ignition switch to OFF, disconnect
the ground cable from battery, and wait for 20
seconds or more.
2) Replace the side airbag sensor (RH). <Ref.
to AB-23, REMOVAL, Side Airbag Sensor.>
3) Connect all connectors.
4) Clear the memory.
5) Perform the Inspection Mode.
6) Read the DTC.
8 CHECK FOR ANY OTHER DTC ON DISPLAY. Is any other DTC displayed?
Diagnostic Chart with Trouble Code
Is the resistance less than 10 ? Go to step 5.
Is the resistance 1 M or
more?
Is the same DTC displayed?
Is the system normal?
AB(diag)-108
Check Yes
Go to step 6.
Go to step 7.
Go to step 8.
Check DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
AB(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
No
Replace the airbag
rear harness along
with body harness.
Replace the airbag
rear harness along
with body harness.
Go to step 8.
Replace the cur-
tain airbag sensor
(RH). <Ref. to AB-
24, REMOVAL,
Curtain Airbag
Sensor.> Replace
the airbag control
module if not oper-
ating normally
even after replac-
ing the sensor.
<Ref. to AB-21,
REMOVAL, Airbag
Control Module.>
Finish the diagno-
sis.