Subaru Legacy 2005 Service Manual page 3632

AIRBAG SYSTEM (DIAGNOSTICS)
Step
1 CHECK AIRBAG MAIN HARNESS (FRONT
SUB SENSOR HARNESS LH).
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Remove the instrument panel lower cover
and disconnect the connectors (AB7) and
(AB2).
3) Remove the instrument panel side cover on
passenger's side and disconnect the connec-
tors (AB10) and (AB9).
4) Disconnect the connector (AB6) from air-
bag control module.
5) Connect the connector (1U) in the test har-
ness U to connector (AB6).
6) Disconnect the front sub sensor (LH), and
then connect the connector (1H) in the test
harness H to connector (AB13).
7) Measure the resistance between connector
(3U) in the test harness U and connector (3H)
in the test harness H.
Connector & terminal
(3U) No. 6 — (3H) No. 5:
(3U) No. 8 — (3H) No. 6:
2 CHECK AIRBAG MAIN HARNESS (FRONT
SUB SENSOR HARNESS LH).
Measure the resistance between connector
(3U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 6 — Chassis ground:
(3U) No. 8 — Chassis ground:
L: DTC 33 FRONT SUB SENSOR RH FAILURE
DTC DETECTING CONDITION:
Front sub sensor (RH) is faulty.
If DTC 33 is displayed, the circuit within the front sub sensor (RH) is faulty. Replace the front sub sensor
(RH). <Ref. to AB-26, Front Sub Sensor.>
M: DTC 34 FRONT SUB SENSOR LH FAILURE
DTC DETECTING CONDITION:
Front sub sensor (LH) is faulty.
If DTC 34 is displayed, the circuit within the front sub sensor (LH) is faulty. Replace the front sub sensor (LH).
<Ref. to AB-26, Front Sub Sensor.>
Diagnostic Chart with Trouble Code
Is the resistance less than 10
Ω?
Is the resistance more than 1
MΩ?
AB(diag)-60
Check
Go to step 2.
Replace the front
sub sensor (LH).
<Ref. to AB-26,
Front Sub Sen-
sor.> When the
sensor is not OK
though the sensor
is replaced,
replace the airbag
control module.
<Ref. to AB-22,
Airbag Control
Module.>
Yes No
Replace the airbag
main harness with
body harness.
Replace the airbag
main harness with
body harness.