Subaru B9 TRIBECA WX 2007 Manual page 645

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
1 CHECK DTC.
Connect the Subaru Select Monitor and read
the DTC of the body integrated unit.
2 CHECK DTC.
Check the DTC displayed in the body integrated
unit.
3 CHECK DTC.
Turn the ignition switch to OFF, and read the
DTC again.
4 CHECK CURRENT DATA.
Check the current data (auto A/C failure) of the
body integrated unit using the Subaru Select
Monitor.
5 CHECK CURRENT DATA.
Check current data (center display failure) of the
body integrated unit.
6 CHECK 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 speed in
the analog data.
3) Read the data display when the number of
blower fan speed is changed on air conditioner
control part.
7 CHECK COMBINATION METER.
1) Display the current data of body integrated
unit using Subaru Select Monitor.
2) Display the door switch in analog data.
3) Read the display of data and combination
meter when each door is opened/closed.
8 CHECK AUTO A/C CONTROL MODULE
HARNESS.
1) Disconnect the auto A/C control module
connector.
2) Disconnect the body integrated unit connec-
tor.
3) Measure the resistance of harness between
body integrated unit and auto A/C control mod-
ule.
Connector & terminal
(B280) No. 26 — (D283) No. 1:
(B280) No. 25 — (D283) No. 14:
Check
Are there any other DTC
besides U1301?
Is the DTC displayed a current
malfunction?
Is U1301 a current malfunc-
tion?
Is OK displayed?
Is OK displayed?
Does the data display change? Go to step 7.
Do the body integrated unit
data indicator and combination
meter indicator change accord-
ing to operation?
Is the resistance less than 10
Ω?
LAN(diag)-70
Yes No
Perform diagnosis Go to step 2.
according to other
DTC.
Replace the body Go to step 3.
integrated unit.
<Ref. to SL-51,
REMOVAL, Body
Integrated Unit.>
<Ref. to Temporary poor
LAN(diag)-70, contact occurs.
DTC U1301 CAN-
LS COUNTER
ABNORMAL,
Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC).>
Go to step 5.
Perform the auto A/
C self-diagnosis.
<Ref. to AC(diag)-
10, OPERATION,
Diagnostic Chart
for Self-diagno-
sis.>
Go to step 6.
Repair or replace
the center display
or MFD. <Ref. to
ET-22, REMOVAL,
Navigation Dis-
play.>
Go to step 8.
Go to step 8. Go to step 9.
Go to step 10. Repair the open
circuit of harness
or replace har-
ness.