
LAN(diag)-63
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Q: DTC B0300 CAN-LS MALFUNCTION
DTC DETECTING CONDITION:
Either end of low-speed CAN communication line is open or shorted, the connector is not connected prop-
erly, or the terminal has poor caulking.
TROUBLE SYMPTOM:
“Er LC” is displayed in odo/trip meter, but communicating function is OK.
WIRING DIAGRAM:
LAN00192
TO POWER SUPPLY CIRCUITFB-10M/B FUSE NO.28 (P)
1
4
3
7
A9
A4
5
BODY INTEGRATED UNIT
ILLUMINATION & BACK-UPJOINT CONNECTOR
KEYLESS ENTRY CONTROL MODULE
i84
i99
i99
i96
E
i84i96i99
123456789101112131415161718192021222324252627282930313233343510 11 12349561728
12345678
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the CAN junction connector
(i128) and body integrated unit connector (i84).
2) Measure the resistance between connector
terminals.
Connector & terminal
(i84) No. 26 — (i128) No. 7 to 12:
(i84) No. 27 — (i128) No. 1 to 6:
NOTE:The i128 junction connector is freely arranged.
Is the resistance less than 10
Ω?
Go to step 2.Repair the short
circuit of harness
or replace har-
ness.

LAN(diag)-65
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
R: DTC B0301 CAN-LS COUNTER ABNORMAL
DTC DETECTING CONDITION:
Find the unit in which trouble occurs and open or short CAN line, and repair and replace them.
(Free running counter error may be detected at the same time from the unit in which malfunction occurs.)
TROUBLE SYMPTOM:
“Er LC” is displayed in odo/trip meter.
WIRING DIAGRAM:
i128
1*
2*1*
2*
CAN JOINTCONNECTOR
i10
B283
A29A30
A27
A26
B26
B25
A: i84
B: B280B1
B14
TWISTED PAIR LINE
5467821931022 231112131415242526 2716171828 29192021 30
B280
i84
1234567891011121314151617181920212223242526272829303132333435
2345 678912 13 14 15 16 17 18 19 20 21 2210111
B283
i10
COMBINATIONMETER
BODYINTEGRATEDUNIT
AUTO A/CCONTROLMODULE
123456789101112
LAN00193
A:
B:
2*
1*
A6
A14
FRONTMONITOR
21
22MFD
2* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 7, 8, 9, 10, 11 AND 12
1* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
i119
i122
A:
A:
A:
i119A:
i122
i128B:
MFDNAVI
MFD
NAVI
9
19 20
105672143131211
14 15 16 17
8
18222125262423
12345678910 11 12 13 14 15 16
345 678919 20 2114 15 16 17 1812101211 13 22
Step Check Yes No
1CHECK AUTO A/C CONTROL MODULE.
1) Display the current data of body integrated
unit using Subaru Select Monitor.
2) Display the number of blower fan levels in
the analog data.
3) Read the data display when the number of
blower fan levels is changed on air conditioner
control part.
Does the data display change? Go to step 2.Go to step 3.

LAN(diag)-67
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
S: DTC B0302 CAN-LS BUS OFF
DTC DETECTING CONDITION:
Because of a lot of error data occurred, some units have been disconnected not to affect other units.
Communication error from the unit in which error is occurred is input at the same time.
TROUBLE SYMPTOM:
“Er LC” is displayed in odo/trip meter.
WIRING DIAGRAM:
i128
1*
2*1*
2*
CAN JOINTCONNECTOR
i10
B283
A29A30
A27
A26
B26
B25
A: i84
B: B280B1
B14
TWISTED PAIR LINE
5467821931022 231112131415242526 2716171828 29192021 30
B280
i84
1234567891011121314151617181920212223242526272829303132333435
2345 678912 13 14 15 16 17 18 19 20 21 2210111
B283
i10
COMBINATIONMETER
BODYINTEGRATEDUNIT
AUTO A/CCONTROLMODULE
123456789101112
LAN00193
A:
B:
2*
1*
A6
A14
FRONTMONITOR
21
22MFD
2* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 7, 8, 9, 10, 11 AND 12
1* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
i119
i122
A:
A:
A:
i119A:
i122
i128B:
MFDNAVI
MFD
NAVI
9
19 20
105672143131211
14 15 16 17
8
18222125262423
12345678910 11 12 13 14 15 16
345 678919 20 2114 15 16 17 1812101211 13 22
Step Check Yes No
1CHECK AUTO A/C CONTROL MODULE.
1) Display the current data of body integrated
unit using Subaru Select Monitor.
2) Display the number of blower fan levels in
the analog data.
3) Read the data display when the number of
blower fan levels is changed on air conditioner
control part.
Does the data display change? Go to step 2.Go to step 3.

LAN(diag)-69
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
T: DTC B0311 CAN-LS METER UNIT DATA ABNORMAL
DTC DETECTING CONDITION:
Combination meter has error, the harness between main harness splice and combination meter is open or
shorted, the connector is not connected properly, or the terminal has poor caulking.
TROUBLE SYMPTOM:
“Er Lc” is displayed in odo/trip meter.
WIRING DIAGRAM:
i128
1*
2*1*
2*
CAN JOINTCONNECTOR
i10
B283
A29A30
A27
A26
B26
B25
A: i84
B: B280B1
B14
TWISTED PAIR LINE
5467821931022 231112131415242526 2716171828 29192021 30
B280
i84
1234567891011121314151617181920212223242526272829303132333435
2345 678912 13 14 15 16 17 18 19 20 21 2210111
B283
i10
COMBINATIONMETER
BODYINTEGRATEDUNIT
AUTO A/CCONTROLMODULE
123456789101112
LAN00193
A:
B:
2*
1*
A6
A14
FRONTMONITOR
21
22MFD
2* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 7, 8, 9, 10, 11 AND 12
1* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
i119
i122
A:
A:
A:
i119A:
i122
i128B:
MFDNAVI
MFD
NAVI
9
19 20
105672143131211
14 15 16 17
8
18222125262423
12345678910 11 12 13 14 15 16
345 678919 20 2114 15 16 17 1812101211 13 22
Step Check Yes No
1CHECK COMBINATION METER.
Perfor m the self-diagnosis of combination
meter.
Is the self-diagnosis OK? Read the DTC
again, and then
perform the diag-
nosis according to
DTC displayed on
the top.
Replace the com-
bination meter.
bination Meter.>

LAN(diag)-70
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
U: DTC B0313 CAN-LS MONITOR DATA ABNORMAL
DTC DETECTING CONDITION:
Center display unit error, or harness between the main harness splice and center display unit is open or
shorted, the connector is not connected securely and the terminal has poor caulking.
TROUBLE SYMPTOM:
“Er LC” is displayed in odo/trip meter.
WIRING DIAGRAM:
i128
1*
2*1*
2*
CAN JOINTCONNECTOR
i10
B283
A29A30
A27
A26
B26
B25
A: i84
B: B280B1
B14
TWISTED PAIR LINE
5467821931022 231112131415242526 2716171828 29192021 30
B280
i84
1234567891011121314151617181920212223242526272829303132333435
2345 678912 13 14 15 16 17 18 19 20 21 2210111
B283
i10
COMBINATIONMETER
BODYINTEGRATEDUNIT
AUTO A/CCONTROLMODULE
123456789101112
LAN00193
A:
B:
2*
1*
A6
A14
FRONTMONITOR
21
22MFD
2* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 7, 8, 9, 10, 11 AND 12
1* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
i119
i122
A:
A:
A:
i119A:
i122
i128B:
MFDNAVI
MFD
NAVI
9
19 20
105672143131211
14 15 16 17
8
18222125262423
12345678910 11 12 13 14 15 16
345 678919 20 2114 15 16 17 1812101211 13 22

LAN(diag)-74
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
W: DTC B0500 KEYLESS UART COM. MALFUNCTION
DTC DETECTING CONDITION:
UART between keyless control unit and body integrated unit is open or shorted, the connector is not con-
nected properly, or the terminal has poor caulking.
TROUBLE SYMPTOM:
Door lock does not operate with keyless.
WIRING DIAGRAM:
i128
1*
2*1*
2*
CAN JOINTCONNECTOR
i10
B283
A29A30
A27
A26
B26
B25
A: i84
B: B280B1
B14
TWISTED PAIR LINE
5467821931022 231112131415242526 2716171828 29192021 30
B280
i84
1234567891011121314151617181920212223242526272829303132333435
2345 678912 13 14 15 16 17 18 19 20 21 2210111
B283
i10
COMBINATIONMETER
BODYINTEGRATEDUNIT
AUTO A/CCONTROLMODULE
123456789101112
LAN00193
A:
B:
2*
1*
A6
A14
FRONTMONITOR
21
22MFD
2* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 7, 8, 9, 10, 11 AND 12
1* :TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
i119
i122
A:
A:
A:
i119A:
i122
i128B:
MFDNAVI
MFD
NAVI
9
19 20
105672143131211
14 15 16 17
8
18222125262423
12345678910 11 12 13 14 15 16
345 678919 20 2114 15 16 17 1812101211 13 22
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (i84) and keyless entry control unit con-
nector (i96).
2) Measure the resistance between har-
nesses.
Connector & terminal
(i84) No. 9 — (i96) No. 3:
Is the resistance less than 10
Ω?
Go to step 2.Repair the open
circuit of harness
or replace har-
ness.

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: )

OD(diag)-17
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 DTC readout of the airbag system (diagnosis).
NOTE:
•For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
•For details concerning DTCs, refer to the “List of Diagnostic Trouble Code (Airbag system, Occupant de-
tection system).”
2. DISPLAY OF STATUS INFORMATION
Check the operating condition of each sensor in the event of malfunction in seat belt buckle switch and seat
position sensor, or when the seat belt buckle switch and seat position sensor has been replaced.
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» display screen, select the {Status Data} and press the [YES] key.
The following table is for support data.
*1: The seat position is forward.
*2: The seat position is rearward.
*3: Displayed when data other than before and behind the seat, such as the breakdown etc, is input.
*4: Displayed when it is initial.
*5: Seat position sensor not supported
*6. Seat belt fastened
*7. Seat belt not fastened
*8: Displayed when data other than belt fastened or not fastened, such as breakdowns is input.
*9: Seat belt buckle switch not supported
*10: Passenger's seat air bag operating state
*11: Passenger's seat air bag non-operating state
NOTE:
For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
Item Display Contents
Seat position sensor LHFr o nt p os it i on *1/Rear position *2 /Other *3/Initial Setting *3 /–– *5
Seat position sensor RH–– *5
Seat belt buckle switch LHBuckled *6/Unbuckled *7 /Other *8/Initial Setting *4 /–– *9
Seat belt buckle switch RHBuckled *6/Unbuckled *7 /Other *8/Initial Setting *4 /–– *9
Passenger’s airbag control statusON *10/OFF *11 /Initial Setting *4