1999 SUBARU FORESTER sensor

5L2 : FRONT SUB SENSOR (LH) AND
FRONT SUB SENSOR HARNESS (LH)
INSPECTION
Measure resistance across test harness I or I2
connector (3I) terminal and chassis ground.
Connector & terminal
(3I) No. 1 (+) Ð Chassis ground (þ):
B5M0558B
:Is the resistance more than 10 kW?
: Go to step5L3.
: Go to step5L4.
5L3 : FRONT SUB SENSOR (LH) AND
FRONT SUB SENSOR HARNESS (LH)
INSPECTION
Measure resistance across test harness I or I2
connector (3I) terminal and chassis ground.
Connector & terminal
(3I) No. 3 (+) Ð Chassis ground (þ):
B5M0559B
:Is the resistance more than 10 kW?
: Replace airbag control module. 5-5 [W6A0].>
: Go to step5L4.5L4 : FRONT SUB SENSOR (LH) INSPEC-
TION
1) Connect test harness H connector (2H) and
front sub sensor (LH).
2) Measure resistance between test harness H
connector (3H) terminal.
Connector & terminal
(3H) No. 3 Ð No. 4:
B5M0566A
:Is the resistance between 750Wand
1k
W?
: Go to step5L5.
: Replace front sub sensor (LH). 5-5 [W9A0].>
5L5 : FRONT SUB SENSOR (LH) INSPEC-
TION
Measure resistance across test harness H connec-
tor (3H) terminal and chassis ground.
Connector & terminal
(3H) No. 3 (+) Ð Chassis ground (þ):
B5M0567A
:Is the resistance less than 10 kW?
: Go to step5L6.
: Replace front sub sensor (LH). 5-5 [W9A0].>
33
[T5L5]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5L6 : FRONT SUB SENSOR (LH) INSPEC-
TION
Measure resistance across test harness H connec-
tor (3H) terminal and chassis ground.
Connector & terminal
(3H) No. 4 (+) Ð Chassis ground (þ):
B5M0568A
:Is the resistance less than 10 kW?
: Go to step5L7.
: Replace front sub sensor (LH). 5-5 [W9A0].>5L7 : FRONT SUB SENSOR HARNESS (LH)
INSPECTION
1) Connect test harness I or I2 connector (1I) and
connector (AB6).
2) Disconnect connector (AB13) from front sub
sensor (LH) and then test
harness H connector (1H) and connector (AB13).
3) Measure resistance between test harness I or
I2 connector (3I) terminal and test harness H con-
nector (3H) terminal.
Connector & terminal
(3I) No. 3 Ð (3H) No. 5:
S5M0356A
:Is the resistance less than 10W?
: Go to step5L8.
: Replace front sub sensor harness (LH)
and airbag main
harness.
34
5-5[T5L6]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5L8 : FRONT SUB SENSOR HARNESS (LH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness H connec-
tor (3H) terminal.
Connector & terminal
(3I) No. 1 Ð (3H) No. 6:
S5M0357A
:Is the resistance less than 10W?
: Go to step5L9.
: Replace front sub sensor harness (LH)
and airbag main
harness. 5L9 : FRONT SUB SENSOR HARNESS (LH)
INSPECTION
1) Connect test harness I or I2 connector (1I) and
connector (AB6).
2) Disconnect connector (AB13) from front sub
sensor (LH) and then test
harness H connector (1H) and connector (AB13).
3) Measure resistance between test harness I or
I2 connector (3I) terminal and test harness H con-
nector (3H) terminal.
Connector & terminal
(3I) No. 3 Ð (3H) No. 6:
S5M0421A
:Is the resistance more than 1 MW?
: Go to step5L10.
: Replace front sub sensor harness (LH)
and airbag main
harness.
35
[T5L9]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5L10 : FRONT SUB SENSOR HARNESS
(LH) INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness H connec-
tor (3H) terminal.
Connector & terminal
(3I) No. 1 Ð (3H) No. 5:
S5M0422A
:Is the resistance more than 1 MW?
: Go to step5L11.
: Replace front sub sensor harness (LH)
and airbag main
harness.
5L11 : FRONT SUB SENSOR HARNESS
(LH) INSPECTION
Measure resistance across test harness I or I2
connector (3I) terminal and chassis ground.
Connector & terminal
(3I) No. 3 (+) Ð Chassis ground (þ):
S5M0358A
:Is the resistance more than 10 kW?
: Go to step5L12.
: Replace front sub sensor harness (LH)
and airbag main
harness. 5L12 : FRONT SUB SENSOR HARNESS
(LH) INSPECTION
Measure resistance across test harness I or I2
connector (3I) terminal and chassis ground.
Connector & terminal
(3I) No. 1 (+) Ð Chassis ground (þ):
S5M0359A
:Is the resistance more than 10 kW?
: Go to step5L13.
: Replace front sub sensor harness (LH)
and airbag main
harness.
5L13 : CHECK POOR CONTACT IN CON-
NECTORS (AB11) AND (AB12).
Check connectors (AB11) and (AB12).
:Is there poor contact in connectors
(AB11) and (AB12)?
: Repair poor contact in connectors
(AB11) and (AB12).
: Replace front sub sensor harness (LH)
and airbag main
harness.
36
5-5[T5L10]DIAGNOSTICS
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

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

R: TROUBLE CODE 52
DIAGNOSIS:
ISide airbag sensor (LH) is faulty.
ISide airbag harness (LH) is faulty.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5R1 : SIDE AIRBAG HARNESS (LH)
INSPECTION
1) Disconnect connector (AB19) and (AB20) at
below front seat on LH side.
2) Disconnect connector (AB17) from airbag con-
trol module and connect it to test harness I or I2
connector (1I).
3) Disconnect connector (AB23) from side airbag
sensor (LH) 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. 14 Ð (3G) No. 5:
B5M0533B
:Is the resistance less than 10W?
: Go to step5R2.
: Replace side airbag harness (LH). to 5-5 [W5A0].>5R2 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 16 Ð (3G) No. 2:
B5M0534B
:Is the resistance less than 10W?
: Go to step5R3.
: Replace side airbag harness (LH). to 5-5 [W5A0].>
5R3 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between test harness I or I2
connector (3I) terminal and test harness G connec-
tor (3G) terminal.
Connector & terminal
(3I) No. 15 Ð (3G) No. 1:
S5M0347A
:Is the resistance less than 10W?
: Go to step5R4.
: Replace side airbag harness (LH). to 5-5 [W5A0].>
50
5-5[T5R0]DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

5R12 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 5 (+) Ð Chassis ground (±):
B5M0781A
:Is the resistance more than 1 MW?
: Go to step5R13.
: Replace side airbag harness (LH). to 5-5 [W5A0].>
5R13 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 14 (+) Ð Chassis ground (±):
B5M0537B
:Is the resistance more than 1 MW?
: Go to step5R14.
: Replace side airbag harness (LH). to 5-5 [W5A0].>5R14 : SIDE AIRBAG HARNESS (LH)
INSPECTION
Measure resistance between connector (3I) termi-
nal and chassis ground.
Connector & terminal
(3I) No. 16 (+) Ð Chassis ground (±):
B5M0538B
:Is the resistance more than 1 MW?
: Replace side airbag sensor (LH). to 5-5 [W7A0].> Go to step5R15.
: Replace side airbag harness (LH). to 5-5 [W5A0].>
5R15 : SIDE AIRBAG HARNESS (LH)
INSPECTION
1) Connect connector (AB19) and (AB20).
2) Connect connector (AB17) and airbag control
module.
3) Connect connector (AB23) 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].>
53
[T5R15]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code