SUBARU TRIBECA 2009 1.G Service Workshop Manual

LAN(diag)-35
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
B: DIAGNOSTIC TROUBLE CODE (DTC) IS NOT STORED
DIAGNOSIS:
Defective combination meter
TROUBLE SYMPTOM:
•Communication error display in odo/trip meter is not cleared.
•“No trouble code” is displayed on Subaru Select Monitor.
NOTE:
If DTC is not displayed on Subaru Select Monitor, LAN communication System should be OK.
C: DTC B0100 INTEG. UNIT SYSTEM ERROR
DTC DETECTING CONDITION:
System error in body integrated unit
TROUBLE SYMPTOM:
•Check light comes on in the combination meter, and displays communication error display “Er IU”.
•LAN communication immobilizer function may not be executed normally.
Step Check Yes No
1CHECK COMMUNICATION ERROR DIS-
PLAY WITH COMBINATION METER.
Tu r n t h e i g n i t i o n s w i t c h t o O N .
Is communication error dis-
played?
Inspect the DTC. Go to step 2.
2CHECK COMBINATION METER.
Perfor m the self-diagnosis of combination
meter.
Is combination meter OK? Go to step 3.Replace the com-
bination meter.
<Ref. to IDI-11,
Combination
Meter.>
3CHECK THE BODY INTEGRATED UNIT.
1) Display the current data of ECM using Sub-
aru Select Monitor.
2) Check data of “body integrated unit data
received”.
Is “Yes” displayed? Go to step 4.Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
4CHECK THE BODY INTEGRATED UNIT.
1) Display the current data of ECM using Sub-
aru Select Monitor.
2) Check data of “body Integrated unit counter
update”.
Is “Yes” displayed? Repair the poor
contact of connec-
tor.
Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Step Check Yes No
1CHECK ALL DTCS.Is DTC concerning ECM dis-
played?
Go to step 2.Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
2CHECK DTC CONCERNING ECM.Is output DTC on ECM con-
cerning CAN communication
error?
Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Per fo r m th e di ag -
nosis according to
DTC concerning
ECM.

LAN(diag)-36
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
D: DTC B0101 BATT P/SUPPLY MALFUNCTION CONT.
DTC DETECTING CONDITION:
Battery power supply control circuit is open or shorted.
TROUBLE SYMPTOM:
No malfunction occurs because the back-up power supply is activated.
NOTE:
When B0102 BATT p/supply (backup) malfunction is output at the same time, all the function of body inte-
grated unit may not operate.
WIRING DIAGRAM:
LAN00149
SYSTEM CONTROL POWER SUPPLYBACK-UP POWER
SUPPLY
BODY INTEGRATED UNIT
B7C2
A21C9B22C8
MICRO COMPUTER
C24B13
i84
B52
B280
R168C:B:
B:
A:
12345678910 11 12 19 2013 14 15 16 17 18
R168C:
B52B:
34128910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
E
MAIN SBF-11BATTERY
B281C:
EE
B280B:
B281C:
567821943102422 2325111213141526 27281617181920 21
5467821931022 23111213141524 25 26 2716171828 29192021 30
i84A:
1234567891011121314151617181920212223242526272829303132333435
FB-18 NO.7MB-29 NO.8

LAN(diag)-37
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 7).
Is the fuse blown out? Replace the fuse
(No. 7). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
7) and body inte-
grated unit.
Go to step 2.
2CONTINUITY CHECK OF WIRING HAR-
NESS.
1) Disconnect the connector (B281) from body
integrated unit.
2) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B281) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness for open or
shorted circuit
between body inte-
grated unit and
fuse.
3CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in body
integrated unit connector?
Repair the poor
contact of connec-
tor.
Go to step 4.
4CHECK BODY INTEGRATED UNIT HAR-
NESS.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Read DTC.
Is the same DTC displayed? Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Te m p o r a r y p o o r
contact occurs.

LAN(diag)-38
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
E: DTC B0102 BATT P/SUPPLY MALFUNCTION CONT.
DTC DETECTING CONDITION:
Battery power supply backup circuit is open or shorted.
TROUBLE SYMPTOM:
•Engine malfunction indicator light may illuminates.
•Keyless entry, room light and key illumination do not operate.
•“En IU” may display in combination meter.
NOTE:
When some B0101 BATT p/supply malfunction cont. are output at the same time, all function of body inte-
grated unit may not function.
WIRING DIAGRAM:
LAN00149
SYSTEM CONTROL POWER SUPPLYBACK-UP POWER
SUPPLY
BODY INTEGRATED UNIT
B7C2
A21C9B22C8
MICRO COMPUTER
C24B13
i84
B52
B280
R168C:B:
B:
A:
12345678910 11 12 19 2013 14 15 16 17 18
R168C:
B52B:
34128910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
E
MAIN SBF-11BATTERY
B281C:
EE
B280B:
B281C:
567821943102422 2325111213141526 27281617181920 21
5467821931022 23111213141524 25 26 2716171828 29192021 30
i84A:
1234567891011121314151617181920212223242526272829303132333435
FB-18 NO.7MB-29 NO.8

LAN(diag)-39
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 8).
Is the fuse blown out? Replace the fuse
(No. 8). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
8) and body inte-
grated unit.
Go to step 2.
2CONTINUITY CHECK OF WIRING HAR-
NESS.
1) Disconnect the connector (B280) from body
integrated unit.
2) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 7 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness for open or
shorted circuit
between body inte-
grated unit and
fuse.
3CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in body
integrated unit connector?
Repair the poor
contact of connec-
tor.
Go to step 4.
4CHECK BODY INTEGRATED UNIT HAR-
NESS.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Read DTC.
Is the same DTC displayed? Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Te m p o r a r y p o o r
contact occurs.

LAN(diag)-40
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
F: DTC B0103 IGNITION POWER FAILURE
DTC DETECTING CONDITION:
IGN power supply circuit is open or shorted.
TROUBLE SYMPTOM:
Symptoms such as illuminating the malfunction indicator light or high speed CAN error display “Er HC” may
occur.
WIRING DIAGRAM:
LAN00150
BODY INTEGRATED UNIT
A1A24
MICRO COMPUTER
B1A8
B72
IGNITION SWITCH
1B
2
4
ACC
ACCOFF
IG
ON
B52B:
34128910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
B280B:
B281C:
567821943102422 2325111213141526 27281617181920 21
5467821931022 23111213141524 25 26 2716171828 29192021 30
i84A:
1234567891011121314151617181920212223242526272829303132333435
12345678910 11 12 19 2013 14 15 16 17 18
i5A:
ACC POWER SUPPLY
B52i5A:B:
E
MAIN SBF-11
FB-28 NO.31
BATTERY
IG POWER SUPPLY
i84
B280B:
A:
B281C:
A21C9B22C8
EE
FB-37 NO.12
B72
134562
FUSE &RELAY BOX
Step Check Yes No
1CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 12).
Is the fuse blown out? Replace the fuse
(No. 12). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
12) and body inte-
grated unit.
Go to step 2.

LAN(diag)-41
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2CONTINUITY CHECK OF WIRING HAR-
NESS.
1) Disconnect the connector (i84) from body
integrated unit.
2) Turn the ignition switch to ON.
3) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(i84) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness for open or
shorted circuit
between body inte-
grated unit and
fuse.
3CHECK POOR CONTACT OF CONNECTOR.Is there poor contact in body
integrated unit connector?
Repair the poor
contact of connec-
tor.
Go to step 4.
4CHECK BODY INTEGRATED UNIT HAR-
NESS.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Read DTC.
Is the same DTC displayed? Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Te m p o r a r y p o o r
contact occurs.
Step Check Yes No

LAN(diag)-42
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
G: DTC B0104 ACC POWER FAILURE
DTC DETECTING CONDITION:
ACC power supply circuit is open or shorted.
TROUBLE SYMPTOM:
Rear wiper may not operate at ACC position.
WIRING DIAGRAM:
LAN00150
BODY INTEGRATED UNIT
A1A24
MICRO COMPUTER
B1A8
B72
IGNITION SWITCH
1B
2
4
ACC
ACCOFF
IG
ON
B52B:
34128910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
B280B:
B281C:
567821943102422 2325111213141526 27281617181920 21
5467821931022 23111213141524 25 26 2716171828 29192021 30
i84A:
1234567891011121314151617181920212223242526272829303132333435
12345678910 11 12 19 2013 14 15 16 17 18
i5A:
ACC POWER SUPPLY
B52i5A:B:
E
MAIN SBF-11
FB-28 NO.31
BATTERY
IG POWER SUPPLY
i84
B280B:
A:
B281C:
A21C9B22C8
EE
FB-37 NO.12
B72
134562
FUSE &RELAY BOX
Step Check Yes No
1CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 31).
Is the fuse blown out? Replace the fuse
(No. 31). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
31) and body inte-
grated unit.
Go to step 2.

LAN(diag)-43
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2CONTINUITY CHECK OF WIRING HAR-
NESS.
1) Disconnect the connector (i84) from body
integrated unit.
2) Turn the ignition switch to ON.
3) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(i84) No. 24 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.Repair the har-
ness for open or
shorted circuit
between body inte-
grated unit and
fuse.
3CHECK POOR CONTACT OF CONNECTOR.Is there poor contact in body
integrated unit connector?
Repair the poor
contact of connec-
tor.
Go to step 4.
4CHECK BODY INTEGRATED UNIT HAR-
NESS.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Read DTC.
Is DTC displayed? Replace the body
integrated unit.
<Ref. to SL-52,
Body Integrated
Unit.>
Te m p o r a r y p o o r
contact occurs.
Step Check Yes No

LAN(diag)-44
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
H: DTC B0106 SHIFT LOCK CIRCUIT FAILURE
DTC DETECTING CONDITION:
Shift lock circuit is shorted to ground.
TROUBLE SYMPTOM:
Shift lock does not be released or remain locked.
WIRING DIAGRAM:
B6
TO POWER SUPPLY CIRCUITFB-28F/B FUSE NO.31 (ACC)
FB-37F/B FUSE NO.12 (IG)
MB-28M/B FUSE NO.34 (B)
FB-3F/B FUSE NO.8 (B)
E
F9
F5
3
4
A24C23C1A1
i84A:B280B:B281C:
B159F:
BODY INTEGRATEDUNIT
B116
SHIFT LOCK SOLENOID
JOINT FUSE BOX
STOP LIGHTSWITCH
3
2
B65
LAN00190
12345678910
B116
123495678
B159F:
567821943102422 2325111213141526 27281617181920 21
B281C:
5467821931022 23111213141524 25 26 2716171828 29192021 30
B280B:
3412
1234567891011121314151617181920212223242526272829303132333435
A:i84
B65
Step Check Yes No
1CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 6 — Chassis ground:
Is the resistance between 10
— 30 Ω?
Go to step 5.Go to step 2.