Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 660
OD(diag)-13
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 READ DIAGNOSTIC TROUBLE CODE (DTC) of the Airbag system (diagnostics). <Ref. to
AB(diag)-26, READ DIAGNOSTIC TROUBLE CODE (DTC), OPERATION, Subaru Select Monitor.>
NOTE:
• For detailed operation procedures, refer to “PC application help for Subaru Select Monitor”.
Diagnostic Trouble Code (DTC).>
2. DISPLAY OF STATUS INFORMATION
Check the operating condition of each sensor in the event of malfunction in the seat belt buckle switch and
seat position sensor, or when the seat belt buckle switch and seat position sensor has been replaced.
1) On «Main Menu» display, select {Each System Check}.
2) On «System Selection Menu» display, select {Airbag System}.
3) Select the {Status Data} in «Airbag System».
The following table is for support data.
*1: Displayed when it is initial.
*2: Seat position sensor not supported
*3: Seat belt fastened
*4: Seat belt not fastened
*5: Displayed when data other than belt fastened or not fastened, such as breakdowns is input.
*6: Seat belt buckle switch not supported
*7: Passenger’s airbag operating state
*8: Passenger’s airbag non-operating state
NOTE:
For details concerning the operation procedure, refer to “PC application help for Subaru Select Monitor”.
Item
Display Contents
Seat position sensor LH
––
*2
Seat position sensor RH
––
*2
Seat belt buckle switch LH
––
*6
Seat belt buckle switch RH
Equipped
*3
/Unequipped
*4
/Other
*5
/Initial setting
*1
/––
*6
Passenger’s airbag control status
ON
*7
/OFF
*8
/Initial Setting
*1
OD(diag)-14
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 «Main Menu» display, select {Each System
Check}.
2) On «System Selection Menu» display, select
{Airbag System}.
3) Select {Clear Memory} in {Airbag System} menu
screen.
4) When the “Clear Memory?” is shown on the
screen, select [OK].
5) When Done is displayed, terminate the Subaru
Select Monitor and turn the ignition switch to OFF.
NOTE:
For details concerning the operation procedure, re-
fer to “PC application help for Subaru Select Moni-
tor”.
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 «Main Menu» display, select {Each System
Check}.
3) On «System Selection Menu» display, select
{Occupant Detection System}.
4) On the {Occupant Detection System} display,
select {Rezeroing}.
5) When «See service manual. And check vehicle
condition for successfully completing the rezero-
ing.» is displayed, check the following to adjust the
condition of the vehicle.
• Adjust the seat backrest to be fully upright. (For
models with power seats, press the power seat but-
ton until the backrest comes to a stop.)
• Adjust the seat slide position all the way back.
(For models with power seats, press the power
seat button until the seat slide does not move any
further.)
• 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 (32 to 104°F).
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 select the [OK].
7) When the «Re-zeroing Unbelt the Passenger
seatbelt Continue: OK, Quit: NO» is displayed,
make sure the passengers seatbelt is disconnected
from the buckle and select the [OK].
8) When the «Re-zeroing Empty the passenger
seat Continue: OK, Quit: NO» is displayed, make
sure that the passengers seat is empty, airbag OFF
indicator illuminates and airbag ON indicator does
not illuminate, and select the [OK].
NOTE:
• After selecting the [OK], «In process...Please
wait for a while without touching vehicle» is dis-
played. 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 “OK” to END» is displayed, go to step 10).
9) When the re-zeroing is ended normally, the «Re-
zeroing is successfully completed Press “OK” to
END» is displayed. And then turn the ignition
switch to OFF to finish the diagnosis.
OD-00025
OD(diag)-15
Subaru Select Monitor
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
10) During the system calibration process, if «Re-
zeroing is unsuccessful See service manual Press
“OK” to END» is displayed, turn the ignition switch
to OFF once and turn it ON again, then read the
DTC of the airbag system. <Ref. to AB(diag)-26,
READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
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. <Ref. to OD(diag)-14,
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 the airbag sys-
tem, and perform the diagnosis while referring to
List of Diagnostic Trouble Code (DTC). <Ref. to
AB(diag)-26, READ DIAGNOSTIC TROUBLE
CODE (DTC), OPERATION, Subaru Select Moni-
tor.> <Ref. to AB(diag)-39, LIST, List of Diagnostic
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 “COMMUNICATION FOR INITIALIZING
IMPOSSIBLE” in the Airbag system (diagnostics).
<Ref. to AB(diag)-28, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Subaru
2. WITHOUT DTC
DETECTING CONDITION:
• Defective combination meter
• Open circuit of harness
TROUBLE SYMPTOM:
• Airbag warning light remains ON.
• “No diagnostic Code Present” will be displayed
on the Subaru Select Monitor.
NOTE:
• For detailed operation procedures, refer to “Air-
bag Warning Light Failure”. <Ref. to AB(diag)-35,
Airbag Warning Light Failure.>
• When the airbag warning light is OFF and “No di-
agnostic Code Present” is displayed on Subaru Se-
lect Monitor, the system is operating properly.
OD(diag)-16
Read Diagnostic Trouble Code (DTC)
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
8. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
For details on reading DTCs, refer to “Airbag Sys-
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