Subaru IMPREZA GD 2007 Series Manual page 3574

asieps_tobira_IM_US.book 31 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Step
1 CHECK IGNITION SWITCH.
2 CHECK BATTERY.
1) Turn the ignition switch to OFF.
2) Measure the battery voltage.
3 CHECK BATTERY TERMINAL.
4 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to ON.
2) Using the Subaru Select Monitor, check
whether communication to other systems can
be performed normally.
5 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to OFF.
2) Disconnect the airbag control module con-
nector.
3) Turn the ignition switch to ON.
4) Check whether communication to other sys-
tems can be executed normally.
6 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the airbag control module,
ABSCM&H/U, ECM and TCM.
3) Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B40) No. 7 — Chassis ground:
7 CHECK OUTPUT SIGNAL TO THE AIRBAG
CONTROL MODULE.
1) Turn the ignition switch to ON in the condi-
tion of step 7.
2) Measure the voltage between data link con-
nector and chassis ground.
Connector & terminal
(B40) No. 7 (+) — Chassis ground (–):
8 CHECK THE HARNESS BETWEEN THE AIR-
BAG CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait for 20 sec-
onds or more.
2) Disconnect the connector (AB3) from airbag
control module.
3) Connect the connector (1R) in the test har-
ness R to connector (AB3).
4) Measure resistance between connector
(4R) in the test harness R and data link connec-
tor.
Connector & terminal
(4R) No. 18 — (B40) No. 7:
Subaru Select Monitor
Check
Is the ignition switch ON?
Is the voltage 11 V or more?
Is there poor contact at the bat-
tery terminal?
Is the system name displayed
on the Subaru Select Monitor?
Is the system name displayed
on the Subaru Select Monitor?
Is the resistance 1 MΩ or
more?
Is the voltage less than 1 V?
Is the resistance less than 10
Ω?
AB(diag)-31
AIRBAG SYSTEM (DIAGNOSTICS)
Yes No
Go to step 2. Turn the ignition
switch to ON, and
select the airbag
mode using the
Subaru Select
Monitor.
Go to step 3. Charge or replace
the battery.
Repair or tighten Go to step 4.
the battery termi-
nal.
Go to step 8. Go to step 5.
Replace the airbag Go to step 6.
control module.
<Ref. to AB-17,
Airbag Control
Module.>
Go to step 7.
Repair the harness
and connector
between each con-
trol module and
data link connec-
tor. (Replace the
harness without
repairing the air-
bag harness.)
Go to step 8.
Repair the harness
and connector
between each con-
trol module and
data link connec-
tor. (Replace the
harness without
repairing the air-
bag harness.)
Go to step 9. Repair the harness
between the airbag
control module and
the data link con-
nector. Or replace
the airbag main
harness along with
body harness.