Subaru IMPREZA GD 2007 Series Manual page 3647

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AIRBAG SYSTEM (DIAGNOSTICS)
Step
1 CHECK POOR CONTACT OF CONNECTORS.
Check for poor contact of the connectors
between the airbag control module and the pas-
senger's airbag module.
2 CHECK PASSENGER'S AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait 20 seconds
or more.
2) Remove the glove box.
3) Disconnect passenger's airbag module con-
nector from (AB4).
4) Connect the connector (1P) in the test har-
ness P to connector (AB4).
5) Connect two airbag resistors to connectors
(2P) and (3P) of test harness P.
6) Connect the battery ground terminal and
turn the ignition switch to ON.
3 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait 20 seconds
or more.
2) Disconnect two airbag resistors from con-
nectors (2P) and (3P) of test harness P.
3) Remove the lower cover and disconnect
connector (AB26) from (AB2).
4) Disconnect connector (AB3) from airbag
control module, and connect the test harness R
to connector (1R).
5) Measure the resistance between connector
(2R) in the test harness R and connectors (2P)
and (3P) in the test harness P.
Connector & terminal
(2R) No. 9 — (3P) No. 3:
(2R) No. 13 — (3P) No. 4:
(2R) No. 3 — (2P) No. 1:
(2R) No. 5 — (2P) No. 2:
4 CHECK AIRBAG MAIN HARNESS.
Measure the resistance of connector (2R) in the
test harness R.
Connector & terminal
(2R) No. 9 — (2R) No. 13:
(2R) No. 9 — Chassis ground:
(2R) No. 13 — Chassis ground:
(2R) No. 3 — (2R) No. 5:
(2R) No. 3 — Chassis ground:
(2R) No. 5 — Chassis ground:
5 CHECK AIRBAG CONTROL MODULE.
1) Connect all connectors.
2) Erase the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
6 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 resistance less than 10
Ω?
Is the resistance 1 MΩ or
more?
Is the same DTC displayed?
AB(diag)-104
Check Yes
Replace the airbag
main harness
along with body
harness.
Replace the pas-
senger's airbag
module. <Ref. to
AB-14, Passen-
ger's Airbag Mod-
ule.>
Go to step 4.
Go to step 5.
Replace the airbag
control module.
<Ref. to AB-17,
Airbag Control
Module.>
Check DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
AB(diag)-43, List
of Diagnostic Trou-
ble Code (DTC).>
No
Go to step 2.
Go to step 3.
Replace the airbag
main harness
along with body
harness.
Replace the airbag
main harness
along with body
harness.
Go to step 6.
Finish the diagno-
sis.