Subaru B9 TRIBECA WX 2007, Manual

Page: 607 / 861

LAN(diag)-32
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step Check Yes No
1 CHECK IGNITION SWITCH. Is the ignition switch ON? Go to step 2 . Turn the ignition
switch to ON, and
select Integ. Unit
mode using Sub-
aru Select Monitor.
2 CHECK BATTERY.
1) Turn the ignition switch to OFF.
2) Measure the battery voltage.
Is the voltage 11 V or more? Go to step
3
. Charge or replace
the battery.
3 CHECK BATTERY TERMINAL. Is there poor contact at battery
terminal? Repair or tighten
the battery termi-
nal. Go to step 4 .
4 CHECK COMMUNICATION OF SUBARU SE-
LECT MONITOR.
1) Turn the ignition switch to ON.
2) Using the Subaru Select Monitor, check
whether communication to other systems can
be executed normally.
Are system and model year dis-
played? Go to step 7 . Go to step 5 .
5 CHECK COMMUNICATION OF SUBARU SE-
LECT MONITOR.
1) Turn the ignition switch to OFF.
2) Disconnect the body integrated unit connec-
tor.
3) Turn the ignition switch to ON.
4) Check whether communication to other sys-
tems can be executed normally.
Are system and model year dis-
played? Go to step
7
. Go to step
6
.
6 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL UNIT AND SUBARU SE-
LECT MONITOR.
1) Turn the ignition switch to ON.
2) Disconnect the body integrated unit connec-
tor.
3) Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B402) No. 10 — Chassis ground:
Is the resistance more than 1
M
Ω
?
Go to step 7 . Repair the harness
and connector
between each con-
trol unit and Sub-
aru Select Monitor.
7 CHECK OUTPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Turn the ignition switch to ON.
2) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B402) No. 10 (+) — Chassis ground (–):
Is the voltage less than 1 V? Go to step 8 . Repair the harness
and connector
between each con-
trol unit and Sub-
aru Select Monitor.
8 CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED UNIT AND DATA LINK
CONNECTOR.
Measure the resistance between body inte-
grated unit and data link connector.
Connector & terminal
(B402) No. 10 — (B280) No. 19:
Is the resistance less than 1
Ω
? Go to step 9 . Repair the harness
and connector
between body inte-
grated unit and
Subaru Select
Monitor.
9 CHECK INSTALLATION OF BODY INTE-
GRATED UNIT CONNECTOR.
Turn the ignition switch to OFF.
Is the body integrated unit con-
nector inserted into body inte-
grated unit until the clamp locks
onto it? Go to step 10 . Insert the body
integrated unit con-
nector into body
integrated unit.
10 CHECK POWER SUPPLY CIRCUIT.
1) Turn the ignition switch to ON (engine OFF).
2) Measure the ignition voltage between body
integrated unit connector and chassis ground.
Connector & terminal
(i84) No. 1 (+) — Chassis ground (–):
Is the voltage 10 V or more? Go to step 11 . Repair the open
circuit of harness
between body inte-
grated unit and
battery.
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