Subaru B9 TRIBECA WX 2007 Manual page 643

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
9 CHECK HARNESS.
1) Connect the junction connector.
2) Measure the resistance between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 25 — Chassis ground:
(B280) No. 26 — Chassis ground:
(i84) No. 26 — Chassis ground:
(i84) No. 27 — Chassis ground:
10 CHECK HARNESS.
1) Turn the ignition switch to ON.
2) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 25 (+) — Chassis ground (–):
(B280) No. 26 (+) — Chassis ground (–):
(i84) No. 26 (+) — Chassis ground (–):
(i84) No. 27 (+) — Chassis ground (–):
11 CHECK AUTO A/C.
Perform the auto A/C self-diagnosis. <Ref. to
AC(diag)-13, A/C CONTROL SYSTEM SELF-
DIAGNOSIS, OPERATION, Diagnostic Chart
for Self-diagnosis.>
12 CHECK COMBINATION METER.
1) Connect all the connectors.
2) Turn the ignition switch to ON.
3) Check the display of combination meter,
odo/trip.
Check
Is the resistance less than 10
Ω?
Is the voltage 6 V or more?
Is the self-diagnosis OK?
Is "Er SS" and "Er SP" dis-
played?
LAN(diag)-68
Yes No
Repair the short Go to step 10.
circuit of harness
or replace har-
ness.
Repair the short Go to step 11.
circuit of harness
or replace har-
ness.
Go to step 11.
Replace the auto
A/C control mod-
ule. <Ref. to AC-
33, REMOVAL,
Control Unit (Auto
A/C Model).>
Replace the body Replace the com-
integrated unit. bination meter.
<Ref. to SL-51, <Ref. to IDI-12,
REMOVAL, Body REMOVAL, Com-
Integrated Unit.> bination Meter.>