2009 SUBARU TRIBECA g sensor

AB(diag)-75
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK POOR CONTACT OF CONNEC-
TORS.
Check for poor contact of the connectors
between the airbag control module and the
front sub sensor LH.
Is there poor contact? Replace the airbag
main harness with
body harness.
Go to step 2.
2CHECK AIRBAG MAIN HARNESS (FRONT
SUB SENSOR HARNESS LH).
1) Turn the ignition switch to 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 console side cover lower on
the passenger's side and disconnect the con-
nectors (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:
Is the resistance less than 10
Ω?
Go to step 3.Replace the airbag
main harness with
body harness.
3CHECK 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:
Is the resistance more than 1
MΩ?
Replace the front
sub sensor (LH).
Front Sub Sen-
sor.> Replace the
airbag control
module if not oper-
ating normally
even after replac-
ing the sensor.
Airbag Control
Module.>
Go to step 4.
4CHECK AIRBAG CONTROL MODULE.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed? Replace the airbag
control module.
Airbag Control
Module.>
Go to step 5.
5CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Check DTC using
“List of Diagnostic
Tr o u b l e C o d e
(DTC)”. AB(diag)-45, List
of Diagnostic Trou-
ble Code (DTC).>
Finish the diagno-
sis.

AB(diag)-76
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
R: 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).
S: 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).

AB(diag)-77
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
T: DTC 36 SEAT POSITION SENSOR LH FAILURE
DTC DETECTING CONDITION:
•Driver's seat position sensor is faulty.
•Airbag control module is faulty.
•Airbag rear harness LH circuit is open, shorted or shorted to ground.
CAUTION:
•Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground terminal from battery, and wait more than 20 seconds before starting to work.
•After replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, reconnect each part and confirm that the warning light operates properly.
•When inspecting the airbag harness, disconnect the each airbag module connector, and seat belt
pretensioner for safety reasons.
WIRING DIAGRAM:
AB-00942
AB17
AB52
43
1 2
AIRBAG CONTROL MODULE
SEAT POSITION SENSOR LH
AB52
12
AB17
12 345678910 11 12
13 14 15 16 17 18 19 20

AB(diag)-78
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
U: DTC 37 BUCKLE SWITCH RH FAILURE
NOTE:
Refer to “Occupant Detection System” for details on DTC 37. SWITCH RH FAILURE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
Step Check Yes No
1CHECK THE SEAT POSITION SENSOR (LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB52) from the
seat position sensor (LH).
3) Connect the connector (2Y) in the test har-
ness Y to connector (AB52).
4) Connect the battery ground terminal and
turn the ignition switch to ON.
Does the airbag warning light
illuminate for 6 seconds and go
off?
Replace the seat
position sensor
(LH) with the
driver's seat slide
rail assembly.
Front Seat.>
Go to step 2.
2CHECK AIRBAG REAR HARNESS LH (SEAT
POSITION SENSOR HARNESS LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB23) from side
airbag module (LH).
3) Disconnect the connector (AB31) from cur-
tain airbag module (LH).
4) Disconnect the connector (AB21) from seat
belt pretensioner (LH).
5) Disconnect the connector (AB17) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB17).
7) Disconnect the seat position sensor (LH),
and then connect the connector (1H) in the test
harness H to connector (AB52).
8) Measure the resistance between connector
(3U) in the test harness U and connector (3H)
in the test harness H.
Connector & terminal
(3U) No. 1 — (3H) No. 6:
(3U) No. 3 — (3H) No. 5:
Is the resistance less than 10
Ω?
Go to step 3.Replace the airbag
rear harness LH
with the body har-
ness.
3CHECK AIRBAG REAR HARNESS LH.
Measure the resistance between connector
(3U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 1 — Chassis ground:
Is the resistance less than 10
Ω?
Replace the airbag
rear harness LH
with the body har-
ness.
Replace the airbag
control module.

AB(diag)-83
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
X: DTC 41 SIDE AIRBAG RH FAILURE
DTC DETECTING CONDITION:
•Side airbag harness (RH) is faulty.
•Side airbag module (RH) is faulty.
•Airbag control module is faulty.
CAUTION:
•Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground terminal from battery, and wait more than 20 seconds before starting to work.
•After replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, reconnect each part and confirm that the warning light operates properly.
•When inspecting the airbag main harness, disconnect the airbag module connectors of driver's
and passenger's seats for safety reasons.
•When inspecting the airbag rear harness, disconnect the side airbag module connector, curtain
airbag module connector and seat belt pretensioner connector for safety reasons.
WIRING DIAGRAM:
AB-00669
AB18
AB24
AB25
12
78
AB28
15171316
3412
AB18AB24
12789101112
13141516171819
56
20
1234
AIRBAG CONTROL MODULE
INFLATOR(SIDE RH)
SIDE AIRBAGSENSOR RH
AB28
1234

AB(diag)-84
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK POOR CONTACT OF CONNEC-
TORS.
Check for poor contact of the connectors
between the airbag control module, side airbag
module RH and the side airbag sensor RH.
Is there poor contact? Replace the airbag
rear harness RH
with body harness.
Go to step 2.
2CHECK SIDE AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB25) from
(AB24), and connect the connector (1F) in test
harness F to connector (AB24).
3) Connect the airbag resistor to the connec-
tor (3F) of test harness F.
4) Connect the battery ground terminal and
turn the ignition switch to ON.
Does the airbag warning light
illuminate for 6 seconds and go
off?
Replace the side
airbag module
(RH). 7, Front Seat.>
Go to step 3.
3CHECK AIRBAG REAR HARNESS RH (SIDE
AIRBAG MODULE HARNESS RH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB26) from seat
belt pretensioner (RH).
3) Disconnect the connector (AB33) from cur-
tain airbag module (RH).
4) Disconnect the airbag resistor from test
harness F.
5) Disconnect the connector (AB18) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB18).
7) Measure the resistance between connector
(3U) in the test harness U and connector (3F)
in the test harness F.
Connector & terminal
(3U) No. 20 — (3F) No. 4:
(3U) No. 18 — (3F) No. 3:
Is the resistance less than 10
Ω?
Go to step 4.Replace the airbag
rear harness RH
with body harness.
4CHECK AIRBAG REAR HARNESS RH (SIDE
AIRBAG MODULE HARNESS RH).
Measure the resistance between connector
(3U) terminals in the test harness U.
Connector & terminal
(3U) No. 20 — (3U) No. 18:
Is the resistance more than 1
MΩ?
Go to step 5.Replace the airbag
rear harness RH
with body harness.
5CHECK AIRBAG REAR HARNESS RH (SIDE
AIRBAG MODULE HARNESS RH).
Measure the resistance between connector
(3U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 20 — Chassis ground:
(3U) No. 18 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 6.Replace the airbag
rear harness RH
with body harness.

AB(diag)-86
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Y: DTC 42 SIDE AIRBAG LH FAILURE
DTC DETECTING CONDITION:
•Side airbag harness (LH) is faulty.
•Side airbag module (LH) is faulty.
•Airbag control module is faulty.
CAUTION:
•Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground terminal from battery, and wait more than 20 seconds before starting to work.
•After replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, reconnect each part and confirm that the warning light operates properly.
•When inspecting the airbag main harness, disconnect the airbag module connectors of driver's
and passenger's seats for safety reasons.
•When inspecting the airbag rear harness, disconnect the side airbag module connector, curtain
airbag module connector and seat belt pretensioner connector for safety reasons.
WIRING DIAGRAM:
AB-00670
AB2312
109
AB19
AB20
17201618
3412
AB19
12
AB17
AB17
789101112
13141516171819
56
20
1234
AIRBAG CONTROL MODULE
INFLATOR(SIDE LH)
SIDE AIRBAGSENSOR LH
AB23
1234

AB(diag)-87
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK POOR CONTACT OF CONNEC-
TORS.
Check for poor contact of the connectors
between the airbag control module, side airbag
module LH and the side airbag sensor LH.
Is there poor contact? Replace the airbag
rear harness LH
with the body har-
ness.
Go to step 2.
2CHECK SIDE AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB20) from
(AB19), and connect the connector (1F) in test
harness F to connector (AB19).
3) Connect the airbag resistor to the connec-
tor (3F) of test harness F.
4) Connect the battery ground terminal and
turn the ignition switch to ON.
Does the airbag warning light
illuminate for 6 seconds and go
off?
Replace the side
airbag module
(LH). 7, Front Seat.>
Go to step 3.
3CHECK AIRBAG REAR HARNESS LH (SIDE
AIRBAG MODULE HARNESS LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB21) from seat
belt pretensioner (LH).
3) Disconnect the connector (AB31) from cur-
tain airbag module (LH).
4) Disconnect the airbag resistor from test
harness.
5) Disconnect the connector (AB17) from air-
bag control module.
6) Connect the connector (1U) in the test har-
ness U to connector (AB17).
7) Measure the resistance between connector
(3U) in the test harness U and connector (3F)
in the test harness F.
Connector & terminal
(3U) No. 12 — (3F) No. 4:
(3U) No. 10 — (3F) No. 3:
Is the resistance less than 10
Ω?
Go to step 4.Replace the airbag
rear harness LH
with the body har-
ness.
4CHECK AIRBAG REAR HARNESS LH (SIDE
AIRBAG MODULE HARNESS LH).
Measure the resistance between connector
(3U) terminals in the test harness U.
Connector & terminal
(3U) No. 12 — (3U) No. 10:
Is the resistance more than 1
MΩ?
Go to step 5.Replace the airbag
rear harness LH
with the body har-
ness.
5CHECK AIRBAG REAR HARNESS LH (SIDE
AIRBAG MODULE HARNESS LH).
Measure the resistance between connector
(3U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 12 — Chassis ground:
(3U) No. 10 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 6.Replace the airbag
rear harness LH
with the body har-
ness.