Subaru B9 TRIBECA WX 2007 Manual page 642

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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 HARNESS.
1) Disconnect the CAN junction connector
(i141, i142) and body integrated unit connector
(i84).
2) Measure the resistance between connector
terminals.
Connector & terminal
(i84) No. 26 — (i142) No. 1 to 4:
(i84) No. 27 — (i141) No. 1 to 4:
NOTE:
The i128 junction connector is freely arranged.
7 CHECK HARNESS.
1) Disconnect the combination meter connec-
tor.
2) Measure the resistance between junction
connector and combination meter connector.
Connector & terminal
(i10) No. A29 — (i141) No. 1 to 4:
(i10) No. A30 — (i142) No. 1 to 4:
8 CHECK HARNESS.
1) Disconnect the body integrated unit connec-
tor (B280) and Auto A/C control module con-
nector (B283).
2) Measure the resistance between body inte-
grated unit connector and auto A/C control
module connector.
Connector & terminal
(B283) No. 1 — (B280) No. 26:
(B283) No. 14 — (B280) No. 25:
Check
Are there any other DTC
besides U1300?
Is the DTC displayed a current
malfunction?
Is U1300 a current malfunc-
tion?
Is OK displayed?
Is OK displayed?
Is the resistance less than 10
Ω?
Is the resistance less than 10
Ω?
Is the resistance less than 10
Ω?
LAN(diag)-67
LAN SYSTEM (DIAGNOSTICS)
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)-67, contact occurs.
DTC U1300 CAN-
LS MALFUNC-
TION, Diagnostic
Procedure with
Diagnostic 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 7. Repair the short
circuit of harness
or replace har-
ness.
Go to step 8. Repair the open
circuit of harness
or replace har-
ness.
Go to step 9. Repair the open
circuit of harness
or replace har-
ness.