Subaru 2009 IMPREZA Service Manual page 2927

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) «See service manual. And check vehicle condi-
tion for successfully completing the rezeroing» is
displayed.
• 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.
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].
Subaru Select Monitor
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
7) When the «Re-zeroing Unbelt the Passenger
seatbelt Continue: OK, Quit: NO» is displayed,
make sure the passenger's seatbelt is disconnect-
ed 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 in-
dicator 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.
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)-24, READ
DIAGNOSTIC TROUBLE CODE (DTC), OPERA-
TION, 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)-15,
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)-24, READ DIAGNOSTIC TROUBLE
CODE (DTC), OPERATION, Subaru Select Moni-
tor.> <Ref. to AB(diag)-38, LIST, List of Diagnostic
Trouble Code (DTC).>
OD-00025
OD(diag)-15