Subaru FORESTER 2004 Service Manual page 193

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK FRONT SUB-SENSOR (RH) AND
AIRBAG HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB3) from the
airbag control module, and connect the con-
nector (1R) in test harness R. <Ref. to AB-18,
Airbag Control Module.>
3) Measure the resistance of the connector
(3R) in test harness R.
Connector & terminal
(3R) No. 7 — (3R) No. 9:
2 CHECK AIRBAG MAIN HARNESS AND
FRONT SUB-SENSOR HARNESS (RH).
1) Disconnect the connector (AB15) from the
front sub-sensor. <Ref. to AB-21, Front Sub
Sensor.>
2) Connect the connector (IH) in test harness
H to connector (AB15).
3) Measure the resistance between connector
(3R) in test harness R and connector (3H) in
test harness H.
Connector & terminal
(3R) No. 7 — (3H) No. 5:
(3R) No. 9 — (3H) No. 6:
3 CHECK AIRBAG MAIN HARNESS AND
FRONT SUB-SENSOR HARNESS (RH).
Measure the resistance between connector
(3R) in test harness R and the chassis ground.
Connector & terminal
(3R) No. 7 — Chassis ground:
(3R) No. 9 — Chassis ground:
4 CHECK AIRBAG MAIN HARNESS
1) Disconnect the connector (AB13) from
(AB14), and connect the connector (1L) in test
harness L to connector (AB13).
2) Measure the resistance between connector
(3R) in test harness R and connector (3L) in
test harness L.
Connector & terminal
(3R) No. 7 — (3L) No. 4:
(3R) No. 9 — (3L) No. 3:
5 CHECK AIRBAG MAIN HARNESS
Measure the resistance between connector
(3R) in test harness R and the chassis ground.
Connector & terminal
(3R) No. 7 — Chassis ground:
(3R) No. 9 — Chassis ground:
6 CHECK FRONT SUB-SENSOR HARNESS
(RH).
1) Connect the connector (2L) in test harness
F to the connector (AB14).
2) Measure the resistance between connector
(3H) in test harness H and connector (3L) in
the test harness L.
Connector & terminal
(3L) No. 5 — (3H) No. 5:
(3L) No. 6 — (3H) No. 6:
Check
Is the resistance 750 Ω and 1
KΩ?
Is the resistance less than 10
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 10
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 10
Ω?
AB-67
AIRBAG SYSTEM (DIAGNOSTIC)
Yes
Replace the airbag Go to step 2.
control module.
<Ref. to AB-18,
Airbag Control
Module.>
Go to step 3. LHD model:
Replace the airbag
main harness and
front sub-sensor
harness with body
harness.
RHD model:
Go to step 4.
Go to step 8. LHD model:
Replace the airbag
main harness and
front sub-sensor
harness with body
harness.
RHD model:
Go to step 4.
Go to step 5. Replace the airbag
main harness with
body harness.
Go to step 6. Replace the airbag
main harness with
body harness.
Go to step 7. Replace the front
sub-sensor har-
ness (RH) with
body harness.
No