SUBARU TRIBECA 2009 1.G Service Workshop Manual

OD(diag)-13
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
•TEST HARNESS AD
2. GENERAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
98299XA020 TEST HARNESS
AD
Used when measuring voltage and resistance of
seat belt tension sensor.
TOOL NAME REMARKS
Circuit tester Used for measuring resistance, voltage and current.
OD-00028
1AD2AD
3
2
1
3123
2
1
312

OD(diag)-14
Electrical Component Location
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
4. Electrical Component Location
A: LOCATION
(1) Occupant detection control mod-
ule
(3) Airbag ON/OFF indicator light
(Warning box)
(4) Buckle switch (Passenger's seat)
(5) Seat belt tension sensor
(2) Occupant detection sensor
(1)
(2)
(5)
(4)(3)
OD-00019
OD-00016
(1)
OD-00015
(2)
OD-00018
(3)
OD-00017
(4)

OD(diag)-15
Airbag Connector
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
5. Airbag Connector
A: PROCEDURE
1. BUCKLE SWITCH
1) How to disconnect:
(1) Move the slide lock (A) in the direction of ar-
row.
(2) While holding the slide lock (A) in moved po-
sition, disconnect the connector.
CAUTION:
When pulling the slide lock or disconnecting
connector, be sure to hold the connector, not
the harness.
2) How to connect:
Holding the connector (A), and push it in carefully
until a clicking sound is heard.
CAUTION:
Be sure to insert the connector in until it is
locked. Then pull it gently to make sure that it is
locked.
AB-00721
(A)
AB-00016

OD(diag)-16
Control Module I/O Signal
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
6. Control Module I/O Signal
A: ELECTRICAL SPECIFICATION
CAUTION:
Never remove the occupant detection control module, occupant detection sensor or seat frame be-
cause they are integrated into one unit.
B: WIRING DIAGRAM
Refer to the electrical wiring diagrams.
Te r m i n a l N a m eTe r m i n a l
No.Input/Output value Remarks
IG – power supply 9 9 — 16 V When ignition switch ON
Airbag control module com-
munication(COM) 10 Open collector terminal Communication line
Airbag control module com-
munication(GND) 5 0 V Ground
Belt tension sensor
(Vcc) 5 0 — 5 V Belt tension sensor power supply
(Vout) 16 0.5 — 4.5 V Sensor output voltage
(GND) 14 0 V Sensor ground
Occupant detection sensor
(Vcc) 6 0 — 5 V Pressure sensor power supply
(Vout) 7 0.5 — 4.5 V Sensor output voltage
(GND) 15 0 V Sensor ground
Buckle switch 1 0 — IG voltage Ignition voltage when switch ON
Buckle switch (GND) 2 0 V Switch ground

OD(diag)-17
Subaru Select Monitor
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
7. Subaru Select Monitor
A: OPERATION
1. READ DIAGNOSTIC TROUBLE CODE (DTC)
When malfunction of the airbag system and the occupant detection system occur, the DTC stored in airbag
control module will be read out.
Refer to the DTC readout of the airbag system (diagnosis). lect Monitor.>
NOTE:
•For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
•For details concerning DTCs, refer to the “List of Diagnostic Trouble Code (Airbag system, Occupant de-
tection system).” ble Code (DTC).>
2. DISPLAY OF STATUS INFORMATION
Check the operating condition of each sensor in the event of malfunction in seat belt buckle switch and seat
position sensor, or when the seat belt buckle switch and seat position sensor has been replaced.
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Airbag System} and press the [YES] key.
3) On the «Airbag System» display screen, select the {Status Data} and press the [YES] key.
The following table is for support data.
*1: The seat position is forward.
*2: The seat position is rearward.
*3: Displayed when data other than before and behind the seat, such as the breakdown etc, is input.
*4: Displayed when it is initial.
*5: Seat position sensor not supported
*6. Seat belt fastened
*7. Seat belt not fastened
*8: Displayed when data other than belt fastened or not fastened, such as breakdowns is input.
*9: Seat belt buckle switch not supported
*10: Passenger's seat air bag operating state
*11: Passenger's seat air bag non-operating state
NOTE:
For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
Item Display Contents
Seat position sensor LHFr o nt p os it i on *1/Rear position *2 /Other *3/Initial Setting *3 /–– *5
Seat position sensor RH–– *5
Seat belt buckle switch LHBuckled *6/Unbuckled *7 /Other *8/Initial Setting *4 /–– *9
Seat belt buckle switch RHBuckled *6/Unbuckled *7 /Other *8/Initial Setting *4 /–– *9
Passenger’s airbag control statusON *10/OFF *11 /Initial Setting *4

OD(diag)-18
Subaru Select Monitor
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
3. CLEAR MEMORY MODE
Clear the DTC stored in the airbag control module
after repairing the airbag system and occupant de-
tection system. (After the breakdown is recovered,
the breakdown code for completed recoveries are
read out when the next breakdown occurs if the
memory clear work is not performed.)
1) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display
screen, select the {Airbag System} and press the
[YES] key.
3) On the {Airbag System} menu screen, select the
{Clear Memory} and press the [YES] key.
4) When the “Clear Memory?” is shown on the
screen, press the [YES] key.
5) When “Done” is displayed, turn the Subaru Se-
lect Monitor to OFF.
NOTE:
For details concerning operation procedure, refer
to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
4. SYSTEM CALIBRATION (REZEROING)
NOTE:
When replacing the occupant detection system, or
removing and disassembling the passenger’s seat,
always perform the system calibration after install-
ing a seat in the vehicle.
CAUTION:
When the trouble occurs in the system during
calibration process, “Occupant detection cali-
bration failure” is detected in the DTC 2A of the
airbag system and the airbag warning light
lights. In this case, after turning the ignition
switch to OFF once, redo the system calibration
(Rezeroing), or after clearing the cause of the
failure, perform the system calibration again.
1) Park empty vehicle on a level surface.
2) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
3) On the «System Selection Menu» display
screen, select the {Occupant Detection System}
and press the [YES] key.
4) On the Occupant Detection System display
screen, select the {Zero Point Adjustment} and
press the [YES] key.
5) “See service manual. And check vehicle condi-
tion for successfully completing the rezeroing.” is
displayed. Check the following to adjust the condi-
tion of the vehicle.
•Adjust the seat backrest to be vertical. (Press the
power seat switch to put the seat in a position
where it will not move.)
•Adjust the seat sliding position to all the way
back. (Press the power seat switch to put the seat
in a position where it will not move.)
•Do not place anything on the top of the seat
cushion.
•Sit on the seat cushion to smooth the seat sur-
face.
•Check that the passenger’s seat belt is not in-
serted into the buckle, not tense or not stuck.
•Check that ambient temperature is in a range
from 0 to 40°C.
6) When the «Re-zeroing Adjust the passenger
seat to the condition shown in service manual» is
displayed, slide the passenger seat all the way to
the back, check that the backrest is adjusted to all
the way up, and press the [YES] key.
7) When the «Re-zeroing Unbelt the Passenger
seatbelt Continue: YES, Quit: NO» is displayed,
make sure the passenger’s seatbelt is disconnect-
ed from the buckle and press the [YES] key.
8) When the «Re-zeroing Empty the passenger
seat Continue: YES, Quit: NO» is displayed, make
sure that the passenger’s seat is empty, air bag
OFF indicator illuminates and air bag ON indicator
does not illuminate, and press the [YES] key.
NOTE:
•After pressing the [YES] key, «Now processing
.... Wait for a while. Do not touch or give impact to
vehicle and seat» is displayed. Do not touch or rock
the vehicle while the message is displayed.
•During the system calibration process, if the
«Re-zeroing is unsuccessful See service manual
Press YES to END» is displayed, go to step 10).
9) When the re-zeroing is ended normally, the«Re-
zeroing is successfully completed Press YES to
END» is displayed. Press the [YES] key and turn
the ignition switch to OFF to finish the diagnosis.
OD-00025

OD(diag)-19
Subaru Select Monitor
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
10) During the system calibration process, if the
«Re-zeroing is unsuccessful See service manual
Press YES to END» is displayed, turn the ignition
switch to OFF once and turn it to ON again, and
then read the DTC of airbag system. AB(diag)-31, OPERATION, Subaru Select Moni-
tor.>
When DTC is input, fix the fault and then perform
the system calibration. When DTC is not input,
check the seat and vehicle status and then perform
the system calibration again. SYSTEM CALIBRATION (REZEROING), OPERA-
TION, Subaru Select Monitor.>
NOTE:
When the re-zeroing is unsuccessful, there could
be occupant detection system failure or improper
seat and vehicle status. When the airbag warning
light illuminates, read the DTC of airbag system,
and perform the diagnosis referring to “List of Diag-
nostic Trouble Code.” ATION, Subaru Select Monitor.> 45, LIST, List of Diagnostic Trouble Code (DTC).>
B: INSPECTION
1. COMMUNICATION FOR INITIALIZING
IMPOSSIBLE
DETECTING CONDITION:
Defective harness connector
TROUBLE SYMPTOM:
Communication is impossible between the airbag
control module and the Subaru Select Monitor.
Refer to “Initial Communication Impossible” in the
DTC of the airbag system (diagnosis). AB(diag)-33, INSPECTION, Subaru Select Moni-
tor.>
2. WITHOUT DTC
DETECTING CONDITION:
•Defective combination meter
•Open circuit of harness
TROUBLE SYMPTOM:
•Airbag warning light remains on.
•“NO TROUBLE CODE” will be displayed on the
Subaru Select Monitor.
For detailed operation procedure, refer to “Airbag
Warning Light Failure”. bag Warning Light Failure.>
NOTE:
When the airbag warning light is OFF and “NO
TROUBLE CODE” is displayed on Subaru Select
Monitor, the system is in normal condition.

OD(diag)-20
Read Diagnostic Trouble Code (DTC)
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
8. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
For details about reading of DTCs, refer to Airbag
System (Diagnosis) Subaru Select Monitor. to AB(diag)-31, Subaru Select Monitor.>

OD(diag)-21
Inspection Mode
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
9. Inspection Mode
A: PROCEDURE
Recreate the circumstance by referring to the con-
ditions described in the checklist.

OD(diag)-22
Clear Memory Mode
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
10.Clear Memory Mode
A: OPERATION
Clear the memory in the following steps after the
malfunction is repaired.
For details to clear DTC, refer to Airbag System
(Diagnosis) Subaru Select Monitor. ag)-31, Subaru Select Monitor.>