Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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”.

• For details concerning DTCs, refer to the List of Diagnostic Trouble Code (Airbag system, Occupant de-

tection system). <Ref. to AB(diag)-39, List of Diagnostic Trouble Code (DTC).> <Ref. to OD(diag)-21, List of

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

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 “COMMUNICATION FOR INITIALIZING

IMPOSSIBLE” in the Airbag system (diagnostics).

<Ref. to AB(diag)-28, COMMUNICATION FOR INI-

TIALIZING IMPOSSIBLE, INSPECTION, Subaru

Select Monitor.>

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-

tem (Diagnostics) Subaru Select Monitor”. <Ref. to

AB(diag)-26, Subaru Select Monitor.>