2009 SUBARU TRIBECA Service Workshop Manual

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Page 457 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual IDI-18
Warning Box
INSTRUMENTATION/DRIVER INFO

Page 458 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-2
Basic Diagnostic Procedure
LAN SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. WITH SUBARU SELECT MONITOR
CAUTION:
•Subaru Select Monitor is required for reading DTC,

LAN(diag)-2
Basic Diagnostic Procedure
LAN SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. WITH SUBARU SELECT MONITOR
CAUTION:
•Subaru Select Monitor is required for reading DTC, performing diagnosis and reading current data.
•Remove foreign matter (dust, water, oil, etc.) from the body integrated unit connector during re-
moval and installation.
•For model with immobilizer, registration of immobilizer may be needed after the replacement of
controller etc. For detailed procedure, refer to the REGISTRATION MANUAL FOR IMMOBILIZER.
NOTE:
•To check harness for broken wires or short circuits, shake trouble spot or connector.
•Check List for Interview.
Step Check Yes No
1CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using interview check list. LAN(diag)-3, Check List for Interview.>
2) Check the display of communication error
display. (Combination meter, odo/trip meter)
Is the communication error dis-
played?
Go to step 3.Go to step 2.
2BASIC INSPECTION
Check the components which might affect
body control. TION, General Description.>
Is the component that might
influence the body control
problem normal?
Go to step 3.Repair or replace
each component.
3CHECK INDICATION OF DTC.
1) Read DTC of all systems. LAN(diag)-12, READ DIAGNOSTIC TROUBLE
CODE (DTC), OPERATION, Subaru Select
Monitor.>
NOTE:•The LAN system is for the overall vehicle, so
read the DTC of all systems.
•If the communication function of the Subaru
Select Monitor cannot be executed normally,
check the communication circuit. LAN(diag)-32, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
2) Record all DTC.
Is a DTC other than CAN com-
munication displayed in the
output code?
ECU: P0600 TCU: P1718 VDC
CU: C0047 or C0057, etc.
Refer to the DTC
related table. to LAN(diag)-31,
FUNCTION
CHECK, DTC
TA B L E , L i s t o f
Diagnostic Trou-
ble Code (DTC).>
Go to step 5.
Go to step 4.
4PERFORM GENERAL DIAGNOSTICS.
Inspect using “General Diagnostics Table”.
Ta b l e . >
Is result of inspection OK? LAN system is nor-
mal.
Go to step 5.
5PERFORM DIAGNOSIS.
1) Correct the cause of trouble.
2) Perform the clear memory mode. LAN(diag)-21, CLEAR MEMORY MODE,
OPERATION, Subaru Select Monitor.>
3) Read the DTC. READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Is DTC displayed? Repeat step 5 until
DTC is not shown.
Finish the diagno-
sis.

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SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-3
Check List for Interview
LAN SYSTEM (DIAGNOSTICS)
2. Check List for Interview
A: CHECK
Inspect the following item about the vehicle’s state.
1. DISPLAY OF COMMUNICATION ERROR
2. DISPLAY

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SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-4
Check List for Interview
LAN SYSTEM (DIAGNOSTICS)
3. SYMPTOMS
4. CONDITIONS UNDER WHICH TROUBLE OCCURS
Behavior of vehicle a) Illumination volume control is not available. Yes / No
b) Re

Page 461 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-5
General Description
LAN SYSTEM (DIAGNOSTICS)
3. General Description
A: CAUTION
1. SRS AIRBAG SYSTEM
Airbag system wiring harness is routed near the
body integrated unit and twisted

LAN(diag)-5
General Description
LAN SYSTEM (DIAGNOSTICS)
3. General Description
A: CAUTION
1. SRS AIRBAG SYSTEM
Airbag system wiring harness is routed near the
body integrated unit and twisted pair line.
CAUTION:
•All airbag system wiring harness and con-
nectors are colored yellow. Do not use the elec-
trical test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the body inte-
grated unit and LAN system.
•Refer to “Airbag System” when disconnect-
ing the air bag system connector. CAUTION, General Description.>
2. LAN SYSTEM
•Bus line of LAN system is twisted pair line. Be
careful not to bypass or partly unbind the twisted
pair line.
•Do not make clearance between bus lines (CAN
High, CAN Low).
•Difference of bus line length should be within 10
cm (3.94 in).
•Fray near the connector should be within 8 cm
(3.14 in).
•If the characteristics of the twisted pair line are
changed, it may extremely weaken against noise.
•When repairing the harness, connect the wires
using soldering and protect it with insulating tape
etc.
B: INSPECTION
Before performing diagnostics, check the following
item which might affect body integrated unit mal-
functions.
1) Measure the battery voltage and check electro-
lyte.
Standard voltage: 12 V or more
Specific gravity: Above 1.260
2) Check the fuse condition.
Make sure that ampere of the fuse is setting value,
and it is not blown out.
3) Check the connecting condition of harness and
harness connector.
4) Confirm settings of body integrated unit are cor-
responded to vehicle equipment. ag)-19, REGISTRATION BODY INTEGRATED
UNIT (EQUIPMENT SETTING), OPERATION,
Subaru Select Monitor.>
5) Confirm setting are corresponded to vehicle
equipment by function setting (ECM customizing)
of body integrated unit. FUNCTION SETTING (ECM CUSTOMIZING), OP-
ERATION, Subaru Select Monitor.>
6) Confirm “Factory initial setting” of body integrat-
ed unit registrations is “Market”.
7) Confirm key illumination does not blink with igni-
tion switch turned to ON.
(A) Bypass wire connection
LAN00081
(A)
(A) Soldering and protection with insulating tape
LAN00080
(A)

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SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-6
General Description
LAN SYSTEM (DIAGNOSTICS)
C: PREPARATION TOOL
1. SPECIAL TOOL
2. GENERAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
18482AA010 CARTRIDGE Troubleshooting for elect

Page 463 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-7
Electrical Component Location
LAN SYSTEM (DIAGNOSTICS)
4. Electrical Component Location
A: LOCATION
(1) Body integrated unit (6) Transmission Control Module
(TCM)
(10) Odo/trip meter
(2)

Page 464 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual LAN(diag)-8
Electrical Component Location
LAN SYSTEM (DIAGNOSTICS)
LAN00182
(6)
(1)
LAN00183
(2)
(3)
LAN00184
(4)
LAN00185
(7)(10)
LAN00186
(7)
(8)
LAN00187
(9)
LAN00188
(11)

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