LAN(diag)-84
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor. <Ref. to LAN(diag)-15,
READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Is B1500 current malfunction?
Go to step
2
.
Go to step
6
.
2
CHECK DTC.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from body inte-
grated unit and keyless entry control module.
3) Connect the disconnected connectors.
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is B1500 current malfunction?
Go to step
3
.
Go to step
6
.
3
CHECK HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from body inte-
grated unit and keyless entry control module.
3) Using the tester, inspect the open circuit of
harness and short (power supply-output short,
GND-output short).
Connector & terminal
(i84) No. 24 — (R80) No. 3:
Is harness normal?
Go to step
4
.
Repair or replace
the harness.
4
CHECK HARNESS.
Using the tester, measure the voltage between
keyless entry control module and chassis
ground.
Connector & terminal
(R80) No. 4 (+) — Chassis ground (–):
Is the voltage battery voltage?
Go to step
5
.
Check the power
supply circuit for
keyless entry con-
trol module.
5
CHECK OPERATION.
1) Install the keyless entry control module from
other vehicle, which is working normally.
2) Register the keyless key which is working
normally.
3) Operate the keyless key.
Is the door locking operate?
Replace the key-
less entry control
module. <Ref. to
SL-48, REMOVAL,
Keyless Entry Con-
trol Module.>
Replace the body
integrated unit.
<Ref. to SL-50,
REMOVAL, Body
Integrated Unit.>
6
CHECK CONNECTOR.
Disconnect the connectors from body inte-
grated unit and keyless entry control module.
Is there poor contact of connec-
tor?
Repair the connec-
tor, or replace har-
ness.
Temporary poor
contact occurs.
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