SUBARU TRIBECA 2009 1.G Service Workshop Manual

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)-79
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
V: DTC 38 BUCKLE SWITCH LH FAILURE
DTC DETECTING CONDITION:
•Driver's seat buckle switch circuit is open, shorted or shorted to ground.
•Airbag rear harness LH circuit is open, shorted or shorted to ground.
•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 harness, disconnect the each airbag module connector, and seat belt
pretensioner for safety reasons.
WIRING DIAGRAM:
AB-00943
AB17
AB51
192
1 2
AIRBAG CONTROL MODULE
BUCKLE SWITCH LH
AB51
12
AB17
12 345678910 11 12
13 14 15 16 17 18 19 20

AB(diag)-80
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK SEAT BELT BUCKLE SWITCH (LH).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB51) from the
buckle switch (LH).
3) Connect the connector (1Y) in the test har-
ness Y to connector (AB51).
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
belt buckle switch
(LH). 10, Front Seat
Belt.>
Go to step 2.
2CHECK AIRBAG REAR HARNESS LH
(BUCKLE SWITCH 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 belt buckle switch (LH),
and then connect the connector (1D) in the test
harness D to connector (AB51).
8) Measure the resistance between connec-
tors (4U) and (5U) in the test harness U and
connector (3D) in the test harness D.
Connector & terminal
(4U) No. 11 — (3D) No. 3:
(4U) No. 9 — (3D) No. 4:
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
(4U) No. 9 — (4U) No. 11:
(4U) No. 9 — 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)-81
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
W: DTC 39 SEATBELT WARNING FAILURE
DTC DETECTING CONDITION:
•Passenger's seat belt warning system is faulty.
•Airbag control module is faulty.
•Body integrated module is faulty.
•Airbag rear harness RH circuit is open, shorted or shorted to ground.
•Harness circuits between body integrated module and air bag control module are 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-01302
AB6
AB6i126
NO.5
24
7
8
8
1234567891011121314151617
1819202122232425262728
IGNITIONSWITCH
BATTERY
AIRBAG CONTROL MODULE
AB1B403
B31
AB1
i126
i84A: B:B280
i116
i2B403
i2B403
123456789101112
i84
3412131415161712910 11185619 207822 23212627 28293024 253132 3334 35
B280
2391011121314154516 1721222324
18202526
6718 1927 28
1
13
9
A13
B27
BODYINTEGRATEDUNIT
1: TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 10, 11 AND 12
123456789
1611101514131217 191823 252420 2221
1256347891011 12
i116
12346789510
*
*
*

AB(diag)-82
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK THE AIRBAG HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB6) from air-
bag control module.
3) Connect the battery ground terminal and
turn the ignition switch to ON.
Does the passenger's seat belt
warning light blink for 6 sec-
onds and go off?
Go to step 3.Go to step 2.
2CHECK THE AIRBAG HARNESS.
1) Turn the ignition switch to OFF.
2) Connect the connector (1U) in the test har-
ness U to connector (AB6).
3) Measure the resistance between connector
(4U) in the test harness U and chassis ground.
Connector & terminal
(4U) No. 16 — Chassis ground:
Is the resistance more than 1
MΩ?
Replace the body
integrated module.
Repair the bulk-
head harness. Or
replace the airbag
main harness with
body harness.
3CHECK THE AIRBAG HARNESS.
1) With the condition of step 2, connect the
connectors (7U) and (8U) in the test harness
U.
2) Turn the ignition switch to ON.?
Does the passenger's seat belt
warning light blink for 6 sec-
onds, then repeatedly light and
go off?
Replace the airbag
control module.
Airbag Control
Module.>
Go to step 4.
4CHECK THE AIRBAG HARNESS.
1) With the condition of step 3, disconnect the
connectors (7U) and (8U) in the test harness
U.
2) Measure the resistance between connector
(4U) in the test harness U and the connector
(i84).
Connector & terminal
(4U) No. 16 — (84) No. 13:
Is the resistance less than 10
Ω?
Replace the body
integrated module.
Repair the bulk-
head harness. Or
replace the airbag
main harness with
body harness.

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)-85
Diagnostic Chart with Trouble Code
AIRBAG SYSTEM (DIAGNOSTICS)
6CHECK 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 7.
7CHECK 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.
Step Check Yes No

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