LAN(diag)-65
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
2
CHECK DTC.
1) Disconnect all control module connectors
(i84, i10, i88, i85) that are connected to low
speed CAN communication line.
2) Connect the disconnected connectors.
3) Turn the ignition switch to ON.
4) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1300 a current malfunc-
tion?
Go to step
3.
Go to step
7.
3
CHECK HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect all control module connectors
(i84, i10, i88, i85) that are connected to low
speed CAN communication line.
3) Using the tester, check for open, short
(power supply-output short, GND-output short)
in the harness.
Connector & terminal
(i84) No. 1 — (i10) No. 27 (combination
meter):
(i84) No. 9 — (i10) No. 26 (combination
meter):
(i84) No. 1 — (i88) No. 20 (auto A/C):
(i84) No. 9 — (i88) No. 19 (auto A/C):
(i84) No. 1 — (i85) No. 12 (audio):
(i84) No. 9 — (i85) No. 11 (audio):
Is harness normal?
Go to step
4.
Repair or replace
the harness.
4
CHECK AUDIO.
1) Connect the disconnected connectors.
2) Disconnect the connector of audio (i85).
3) Turn the ignition switch to ON.
4) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1300 a current malfunc-
tion?
Go to step
5.
Replace the audio.
<Ref. to ET-6,
REMOVAL,
Audio.>
5
CHECK AUTO A/C CONTROL MODULE.
1) Turn the ignition switch to OFF.
2) Connect the audio connector.
3) Disconnect the auto A/C control module
connector (i88).
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1300 a current malfunc-
tion?
Go to step
6.
Replace the auto
A/C control mod-
ule. <Ref. to AC-
31, REMOVAL,
Control Unit (Auto
A/C Model).>
6
CHECK BODY INTEGRATED UNIT.
1) Turn the ignition switch to OFF.
2) Connect the auto A/C control module.
3) Replace the body integrated unit of your
vehicle with the body integrated unit from other
vehicle, which is working normally.
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1300 a current malfunc-
tion?
Replace the com-
bination meter.
<Ref. to IDI-16,
REMOVAL, Com-
bination Meter.>
Replace the body
integrated unit.
<Ref. to SL-48,
REMOVAL, Body
Integrated Unit.>
7
CHECK HARNESS.
1) Turn the ignition switch to OFF.
2) Shake the harness used for CAN communi-
cation circuit.
3) Turn the ignition switch to ON.
4) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1300 a current malfunc-
tion?
Repair or replace
the harness.
Go to step
8.
8
CHECK CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector that is connected
to low speed CAN circuit.
Is there poor contact at discon-
nected connector?
Repair the connec-
tor terminal, or
replace harness.
Temporary com-
munication failure
occurs.
Step
Check
Yes
No