Page 569 of 2453
LI-36
Ignition Switch Illumination
LIGHTING SYSTEM
Page 570 of 2453

OD(diag)-2
Basic Diagnostic Procedure
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
Step Check Yes No
1CHECK WARNING LIGHT.
Check whether the airbag warning light in the
combination meter is lit.
Does the airbag warning light
illuminate?
Go to step 2.Perform the diag-
nosis according to
phenomenon of
the problem.
2READ DTC.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON, and the Sub-
aru Select Monitor power switch to ON.
4) Read the DTC.
OPERATION, Read Diagnostic Trouble Code
(DTC).>
NOTE:If the communication function of the Subaru Se-
lect Monitor cannot be executed normally,
check the communication circuit.
OD(diag)-19, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Sub-
aru Select Monitor.>
5) Record all DTCs and freeze frame data.
Is DTC displayed? Go to step 3.Go to “Airbag
Wa r ni n g L ig h t Fa i l-
ure”.
AB(diag)-40, Air-
bag Warning Light
Fai lu r e.>
3PERFORM DIAGNOSIS.
1) Determine the possible cause from “List of
Diagnostic Trouble Code.”
25, List of Diagnostic Trouble Code (DTC).>
2) Inspect the DTC using “List of Diagnostic
Tr o u b l e C o d e ( D T C ) ” .
3) Repair the trouble cause.
4) Perform the clear memory mode.
OD(diag)-22, Clear Memory Mode.>
5) Perform the inspection mode.
OD(diag)-21, Inspection Mode.>
6) Read any other DTCs displayed.
Is DTC displayed? Perform the proce-
dure 1) to 5) in
step 3.
Finish the diagno-
sis.
Page 571 of 2453
OD(diag)-3
Check List for Interview
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
2. Check List for Interview
A: CHECK
Customer's name Inspector's name
Date vehicle brought in / / Registration No.
Odometer readingkm
milesV. I . N .
Date problem occurred / / Registration year / /
Weather Fine Cloudy Rainy Snowy Others:
Te m p e r a t u r e ° C ( ° F )
Road condition Level road Uphill Downhill Rough road Others:
Ve h i c l e o p e r a t i o n
Starting Idling
Driving ( Constant speed Acceleration Deceleration
Steering wheel turn Others: )
Details of problem
Airbag warning light operation Normal (After turning the ignition switch to ON, illuminates for 6 seconds then goes off.)
Remains ON Remains OFF
Passenger's airbag ON/OFF
indicator does not operate.
Normal (After turning the ignition switch to ON, illuminates for 6 seconds then goes off for 2
seconds; Lights ON (adult) or OFF (children/unoccupied).)
Both remain ON Both remain OFF
DTC output Normal code DTC: (Code: )
Page 572 of 2453

OD(diag)-4
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
3. General Description
A: CAUTION
1) Never remove the occupant detection control
module, occupant detection sensor and seat cush-
ion from seat frame because the occupant detec-
tion system is integrated into seat frame as one
unit.
2) Always perform “system calibration (Rezeroing)”
when removing or removing and disassembling the
passenger’s seat.
CALIBRATION (REZEROING), OPERATION,
Subaru Select Monitor.>
3) Never connect the battery in reverse polarity.
•Occupant detection system may be destroyed in-
stantly.
4) Do not disconnect the battery terminals while the
engine is running.
•A large counter electromotive force will be gener-
ated in the generator, and this voltage may damage
electronic parts such as occupant detection control
module.
5) Before disconnecting the connectors of each
sensor and control module, be sure to turn the igni-
tion switch to OFF and wait for 20 seconds or more.
•Occupant detection control module may be dam-
aged.
6) Every A/C-related part is a precision part. Do not
drop them.
7) Airbag system wiring harness is routed near the
A/C control panel and junction box.
CAUTION:
•For airbag system, yellow-colored wiring har-
ness and connectors are all used. Do not use
the electrical test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the occupant
detection system.
•Refer to “Airbag System” when repairing the
occupant detection system.
4, CAUTION, General Description.>
B: INSPECTION
Measure the battery voltage and check electrolyte.
Standard voltage: 12 V
Specific gravity: Above 1.260
Page 573 of 2453
OD(diag)-5
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
C: PREPARATION TOOL
CAUTION:
To measure the voltage and resistance of airbag system and occupant detection system compo-
nents, be sure to use the specified test harness.
1. SPECIAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
24082AA010 CARTRIDGE Troubleshooting for electrical system.
22771AA030 SUBARU SELECT
MONITOR KIT
Tr o u b l e s h o o t i n g f o r e l e c t r i c a l s y s t e m .
ST24082AA260
ST22771AA030
Page 574 of 2453
OD(diag)-6
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
•TEST HARNESS D
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
98299AG060 TEST HARNESS D Used when measuring voltage and resistance of
the front seat belt buckle switch.
3D2D
1D
ST98299AG060
AB-01068
51
2
2
1
6
3
4
1212
3D
3D2D
1D
1D2D
134562
Page 575 of 2453
OD(diag)-7
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
•TEST HARNESS U
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
98299AG000 TEST HARNESS U Used when measuring voltage and resistance of
airbag control module.
ST98299AG000
1U2U4U3U
8U
9U
6U7U
5U
Page 576 of 2453
OD(diag)-8
General Description
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS)
AB-00930
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