Subaru 2009 IMPREZA Service Manual page 2885

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 ground cable from battery, and wait for 20
seconds or more.
2) Disconnect the connector (AB33), and con-
nect the connector (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 (CUR-
TAIN AIRBAG MODULE HARNESS RH).
1) Turn the ignition switch to OFF, disconnect
the ground cable from battery, and wait for 20
seconds or more.
2) Disconnect the connector (AB26) from seat
belt pretensioner (RH).
3) Disconnect connector (AB24) from side air-
bag module (RH).
4) Disconnect the airbag resistor from test har-
ness N.
5) Disconnect the connectors (AB6, AB17,
AB18) from airbag control module.
6) Connect the test harness AG connector
(1AG) to the connectors (AB6, AB17, AB18).
7) Connect the battery ground terminal and
turn the ignition switch to ON.
8) Measure the voltage between connector
(6AG) in the test harness AG and chassis
ground.
Connector & terminal
(6AG) No. 6 (+) — Chassis ground (–):
(6AG) No. 8 (+) — Chassis ground (–):
4 CHECK AIRBAG CONTROL MODULE.
1) Connect all connectors.
2) Clear the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
5 CHECK FOR ANY OTHER DTC ON DISPLAY. Is any other DTC displayed?
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?
AB(diag)-96
Check Yes
Replace the airbag
rear harness along
with body harness.
Replace the cur-
tain airbag module
(RH). <Ref. to AB-
19, Curtain Airbag
Module.>
Go to step 4.
Replace the airbag
control module.
<Ref. to AB-21,
Airbag Control
Module.>
Check DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
AB(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
No
Go to step 2.
Go to step 3.
Replace the airbag
rear harness along
with body harness.
Go to step 5.
Finish the diagno-
sis.