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.
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.
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.”
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).
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”.
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.
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.
OD(diag)-26
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
14.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC 2A OCCUPANT DETECTION CALIBRATION FAILURE
DTC DETECTING CONDITION:
System calibration (Rezeroing) was not completed normally.
B: DTC 2B ODS ERRONEOUS PARTS
DTC DETECTING CONDITION:
•Wrong airbag control module is installed.
•Wrong occupant detection system is installed.
Step Check Yes No
1PERFORM RE-ZEROING.
Perfor m the system calibration using Subar u
Select Monitor.
Is the system calibration com-
pleted normally?
Finish the diagno-
sis.
Follow the system
calibration proce-
dures.
OPERATION,
Subaru Select
Monitor.>
Step Check Yes No
1CHECK THE OCCUPANT DETECTION SYS-
TEM.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Replace the passenger’s seat frame
assembly.
3) Connect the ground cable to battery.
4) Connect Subaru Select Monitor to the vehi-
cle and perform the system calibration.
Monitor.>
Is the system calibration com-
pleted normally?
Finish the diagno-
sis.
Go to step 2.
2CHECK AIRBAG CONTROL SYSTEM.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Replace the airbag control module.
3) Connect the ground cable to battery.
4) Connect Subaru Select Monitor to the vehi-
cle and perform the system calibration.
Monitor.>
Is the system calibration com-
pleted normally?
Finish the diagno-
sis.
Check between
the occupant
detection control
module and air-
bag control mod-
ule.
SB-8
Seat Belt Warning System
SEAT BELT SYSTEM
4. Seat Belt Warning System
A: WIRING DIAGRAM
B: INSPECTION
TROUBLE SYMPTOM:
•Driver’s side seat belt warning light does not turn on or off.
•Warning buzzer does not beep.
Step Check Yes No
1CHECK BODY INTEGRATED MODULE.
1) Connect the Subaru Select Monitor to the
data link connector.
2) Turn the ignition switch to ON. (engine
OFF)
3) Turn the Subaru Select Monitor power to
ON.
4) Read the data of the driver’s seat belt
switch using the Subaru Select Monitor.
Monitor.>
Is the seat belt switch display
OFF?
Go to step 2.Go to step 6.
2CHECK SEAT BELT WARNING LIGHT.
Read the data of driver’s seat belt warning light
using the Subaru Select Monitor.
Is the seat belt warning light
display ON?
Go to step 3.Check the harness
between combina-
tion meter and
body integrated
unit.
3CHECK BODY INTEGRATED MODULE.
1) Connect the driver’s seat belt.
2) Read the data of driver’s seat belt switch
using Subaru Select Monitor.
Is the seat belt switch display
ON?
Go to step 4.Go to step 6.
4CHECK SEAT BELT WARNING LIGHT.
Read the data of driver’s seat belt warning light
using the Subaru Select Monitor.
Is the seat belt warning light
display OFF? Also, is the seat
belt warning light in the combi-
nation meter gone off?
Go to step 5.Check the harness
between ignition
switch and body
integrated unit.
5CHECK SEAT BELT WARNING BUZZER.
1) Connect the driver’s seat belt.
2) Turn the ignition switch to ON.
Does the buzzer beep? Go to step 6.Replace the body
integrated unit.
6CHECK DRIVER’S SEAT BELT BUCKLE
SWITCH.
1) Insert the tongue plate to the driver’s seat
belt buckle.
2) Measure the voltage between connector
(R8) and chassis ground.
Connector & terminal
(R8) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 7.Repair the har-
ness between
driver’s seat
buckle switch and
chassis ground.
7CHECK DRIVER’S SEAT BELT BUCKLE
SWITCH.
1) Disconnect the connector (R8) from driver’s
seat inner seat belt assembly.
2) Measure the resistance between connector
(R8) terminals and chassis ground.
Connector & terminal
(R8) No. 1 — Chassis ground:
(R8) No. 3 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 8.Replace the
driver’s seat inner
belt.
Belt.>
8CHECK BODY HARNESS.
Measure the voltage between connector
(R167) and chassis ground.
Connector & terminal
(R167) No. 11 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 9.Repair or replace
the driver’s seat
inner belt and
body harness.
SB-9
Seat Belt Warning System
SEAT BELT SYSTEM
9CHECK BODY INTEGRATED MODULE.
Measure the voltage between connector (i84)
and chassis ground.
Connector & terminal
(i84) No. 4 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 10.Check the body
integrated unit.
10 CHECK COMBINATION METER.
Measure the voltage between connector
(R167) and chassis ground.
Connector & terminal
(R167) No. 20 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 11.Replace the body
integrated unit.
11 CHECK COMBINATION METER.
Measure the voltage between connector (i10)
and chassis ground.
Connector & terminal
(i10) No. 9 (+) — Chassis ground (–):
Is the voltage more than 10 V?
Also, does the seat belt warn-
ing light come on?
Go to step 12.Check the combi-
nation meter.
12 CHECK SEAT BELT WARNING SYSTEM.
1) Disconnect the driver’s seat belt.
2) Turn the ignition switch to ON.
Does the seat belt warning
buzzer beep and warning light
blink for 6 seconds after turn-
ing the ignition switch to ON?
Go to step 13.Replace the body
integrated unit.
13 CHECK SEAT BELT WARNING SYSTEM.
Wait for 6 seconds from the step 12 condition
(seat belt warning buzzer beeps and warning
light blinks).
Does the seat belt warning
light repeat illuminating/blink-
ing every 15-seconds, and the
warning buzzer beep?
Go to step 14.Replace the body
integrated unit.
14 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt buckle in the
step 13 condition (seat belt warning light
repeat illuminating/blinking every 15-seconds,
and warning buzzer beeps).
Does the seat belt warning
light go off and the buzzer
stop?
Go to step 15.Replace the body
integrated unit.
15 CHECK SEAT BELT WARNING SYSTEM.
Disconnect the driver’s seat belt.
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 16.Replace the body
integrated unit.
16 CHECK SEAT BELT WARNING SYSTEM.
1) Lift-up the vehicle.
NOTE:
Raise all wheels off floor.
2) Start the engine, and set the vehicle speed
to more than 15 km/h (9 MPH).
NOTE:
When there is a speed difference between front
and rear wheels, the ABS or VDC warning may
light, but this does not indicate a malfunction.
When diagnosis is complete, perform clear
memory for VDC.
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 17.Replace the body
integrated unit.
17 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt in the step 16
condition.
Does the seat belt warning
light go off and the buzzer
stop?
Go to step 18.Replace the body
integrated unit.
18 Seat Belt Warning System
Disconnect the driver’s seat belt in the step 17
condition.
Does the seat belt warning
light repeat illuminating/ blink-
ing every 15-seconds?
Go to step 19.Replace the body
integrated unit.
19 CHECK SEAT BELT WARNING SYSTEM.
Connect the driver’s seat belt.
Does the seat belt warning
light go off and the buzzer
stop?
A temporary con-
tact failure.
Replace the body
integrated unit.
Step Check Yes No
SB-11
Front Seat Belt
SEAT BELT SYSTEM
B: INSTALLATION
1. OUTER SEAT BELT ASSEMBLY
Install in the reverse order of removal.
CAUTION:
•The parts of driver and passenger sides are
not the same. Before installation, make sure
that the correct part is used.
•Be careful not to twist the seat belts during
installation.
Tightening torque:
2. INNER SEAT BELT ASSEMBLY
Install in the reverse order of removal.
CAUTION:
•After the driver’s and passenger’s inner seat
belt assembly installation, check that the seat
belt buckle switch operates normally using the
Subaru Select Monitor in {Status Data} of “Air-
bag System”.
aru Select Monitor.>Improper buckle switch op-
eration may cause airbag system malfunction.
•Inner seat belt assembly harness (1) must be
routed securely as shown in the figure, as it can
affect the performance of the seat position sen-
sor and occupant detection system.
•Driver’s seat
•Passenger’s seat
Tightening torque:
C: INSPECTION
1. OUTER SEAT BELT ASSEMBLY
Check for the following, and replace with new parts
if necessary.
•Pretensioner is cracked or deformed.
•The belt tension sensor is cracked. Or deformed.
•Seat belt is slackened, bent or worn. Seat belt is
abnormally wound or extended.
2. INNER SEAT BELT ASSEMBLY
Check for the following, and replace with new parts
if necessary.
•Inner seat belt assembly is deformed or dam-
aged.
•Seat belt buckle cannot be engaged properly.
SB-00317
(1)
SB-00318
(1)