1999 SUBARU FORESTER Service Repair Manual

5N7 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3F) termi-
nal and chassis ground.
Connector & terminal
(3F) No. 4 (+) Ð Chassis ground (±):
B5M0548A
:Is the resistance more than 1 MW?
: Go to step5N8.
: Replace side airbag harness (LH). to 5-5 [W5A0].>
5N8 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 10 (+) Ð Chassis ground (±):
B5M0549B
:Is the resistance more than 1 MW?
: Go to step5N9.
: Replace side airbag harness (LH). to 5-5 [W5A0].>5N9 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 12 (+) Ð Chassis ground (±):
B5M0550B
:Is the resistance more than 1 MW?
: Replace airbag control module. 5-5 [W6A0].>
: Replace side airbag harness (LH). to 5-5 [W5A0].>
42
5-5[T5N7]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

O: TROUBLE CODE 45
DIAGNOSIS:
ISide airbag harness (RH) is faulty.
IAirbag control module is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5O1 : SIDE AIRBAG MODULE INSPECTION
1) Disconnect connector (AB24) and (AB25), and
then connect connector (AB24) and test harness F
connector (1F).
2) Connect test harness F connector (3F) and air-
bag resistor .
3) Connect battery ground cable and then turn
ignition switch ON.
:Does the airbag warning light go off
after about 7 seconds and remain off
for more than 30 seconds?
: Replace front seat with side airbag mod-
ule (RH).
: Go to step5O2.5O2 : SIDE AIRBAG HARNESS (RH)
INSPECTION
1) Turn ignition switch OFF, disconnect battery
ground cable and then wait at least 20 seconds.
2) Disconnect test harness F and airbag resistor.
3) Disconnect connector (AB18) from airbag con-
trol module and connect it to test harness I or I2
connector (1I).
4) Connect battery ground cable and turn ignition
switch ON. (engine off)
5) Measure voltage across connector (3I) terminal
and chassis ground.
Connector & terminal
(3I) No. 7 (+) Ð Chassis ground (±):
B5M0523B
:Is the voltage less than 1 V?
: Go to step5O3.
: Replace side airbag harness (RH).

43
[T5O2]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5O3 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure voltage across connector (3I) terminal
and chassis ground.
Connector & terminal
(3I) No. 9 (+) Ð Chassis ground (±):
B5M0777A
:Is the voltage less than 1 V?
: Replace airbag control module. 5-5 [W6A0].>
: Replace side airbag harness (RH).

P: TROUBLE CODE 46
DIAGNOSIS:
ISide airbag harness (LH) is faulty.
IAirbag control module is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5P1 : SIDE AIRBAG MODULE INSPECTION
1) Disconnect connector (AB19) and (AB20), and
then connect connector (AB19) and test harness F
connector (1F).
2) Connect test harness F connector (3F) and air-
bag resistor.
3) Connect battery ground cable and then turn
ignition switch ON.
:Does the airbag warning light go off
after about 7 seconds and remain off
for more than 30 seconds?
: Replace front seat with side airbag mod-
ule (LH).
: Go to step5P2.
44
5-5[T5O3]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5P2 : SIDE AIRBAG HARNESS (LH)
INSPECTION
1) Turn ignition switch OFF, disconnect battery
ground cable and then wait at least 20 seconds.
2) Disconnect test harness F and airbag resistor.
3) Disconnect connector (AB17) from airbag con-
trol module and connect it to test harness I or I2
connector (1I).
4) Connect battery ground cable and turn ignition
switch ON. (engine off)
5) Measure voltage across connector (3I) terminal
and chassis ground.
Connector & terminal
(3I) No. 10 (+) Ð Chassis ground (±):
B5M0525B
:Is the voltage less than 1 V?
: Go to step5P3.
: Replace side airbag harness (LH). to 5-5 [W5A0].>5P3 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure voltage across connector (3I) terminal
and chassis ground.
Connector & terminal
(3I) No. 12 (+) Ð Chassis ground (±):
B5M0526B
:Is the voltage less than 1 V?
: Replace airbag control module. 5-5 [W6A0].>
: Replace side airbag harness (LH). to 5-5 [W5A0].>
45
[T5P3]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

Q: TROUBLE CODE 51
DIAGNOSIS:
ISide airbag sensor (RH) is faulty.
ISide airbag harness (RH) is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5Q1 : SIDE AIRBAG HARNESS (RH)
INSPECTION
1) Disconnect connector (AB24) and (AB25) at
below front seat on RH side.
2) Disconnect connector (AB18) from airbag con-
trol module and connect it to test harness I or I2
connector (1I).
3) Disconnect connector (AB28) from side airbag
sensor (RH) and connect it to test harness G con-
nector (1G).
4) Measure resistance between test harness I or
I2 connector (3I) terminal and test harness G con-
nector (3G) terminal.
Connector & terminal
(3I) No. 17 Ð (3G) No. 2:
B5M0527B
:Is the resistance less than 10W?
: Go to step5Q2.
: Replace side airbag harness (RH).
5Q2 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 19 Ð (3G) No. 5:
B5M0528B
:Is the resistance less than 10W?
: Go to step5Q3.
: Replace side airbag harness (RH).

5Q3 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 18 Ð (3G) No. 1:
S5M0345A
:Is the resistance less than 10W?
: Go to step5Q4.
: Replace side airbag harness (RH).

46
5-5[T5Q0]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5Q4 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 20 Ð (3G) No. 4:
S5M0346A
:Is the resistance less than 10W?
: Go to step5Q5.
: Replace side airbag harness (RH).

5Q5 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 17 Ð (3G) No. 5:
S5M0423A
:Is the resistance more than 1 MW?
: Go to step5Q6.
: Replace side airbag harness (RH).
5Q6 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 17 Ð (3G) No. 1:
S5M0424A
:Is the resistance more than 1 MW?
: Go to step5Q7.
: Replace side airbag harness (RH).

5Q7 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 17 Ð (3G) No. 4:
S5M0425A
:Is the resistance more than 1 MW?
: Go to step5Q8.
: Replace side airbag harness (RH).

47
[T5Q7]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5Q8 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 19 Ð (3G) No. 1:
S5M0426A
:Is the resistance more than 1 MW?
: Go to step5Q9.
: Replace side airbag harness (RH).

5Q9 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 19 Ð (3G) No. 4:
S5M0427A
:Is the resistance more than 1 MW?
: Go to step5Q10.
: Replace side airbag harness (RH).
5Q10 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 18 Ð (3G) No. 4:
S5M0428A
:Is the resistance more than 1 MW?
: Go to step5Q11.
: Replace side airbag harness (RH).

5Q11 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 18 (+) Ð Chassis ground (±):
B5M0778A
:Is the resistance more than 1 MW?
: Go to step5Q12.
: Replace side airbag harness (RH).

48
5-5[T5Q8]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5Q12 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 20 (+) Ð Chassis ground (±):
B5M0779A
:Is the resistance more than 1 MW?
: Go to step5Q13.
: Replace side airbag harness (RH).

5Q13 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 17 (+) Ð Chassis ground (±):
B5M0531B
:Is the resistance more than 1 MW?
: Go to step5Q14.
: Replace side airbag harness (RH).
5Q14 : SIDE AIRBAG HARNESS (RH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 19 (+) Ð Chassis ground (±):
B5M0532B
:Is the resistance more than 1 MW?
: Replace side airbag sensor (RH). to 5-5 [W7A0].> Go to step5Q15.
: Replace side airbag harness (RH).

5Q15 : SIDE AIRBAG HARNESS (RH)
INSPECTION
1) Connect connector (AB24) and (AB25).
2) Connect connector (AB18) and airbag control
module.
3) Connect connector (AB28) and side airbag sen-
sor.
4) Connect battery ground cable and then turn
ignition switch to ON (engine OFF).
:Does the airbag warning light go off
after about 7 seconds and remain off
for more than 30 seconds?
: Perform clear memory. [T4C0].>
: Replace airbag control module. 5-5 [W6A0].>
49
[T5Q15]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code