LAN(diag)-45
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
3
CHECK DTC.
1) Turn the ignition switch to OFF.
2) Disconnect all control module connectors
(B280, B310, B136, B230, B231, B380) that are
connected to high speed CAN communication
line.
3) Connect all the disconnected connectors.
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1201 a current malfunc-
tion?
For models without
SI-DRIVE, Go to
step
5.
For models with SI-
DRIVE, Go to step
4.
Go to step
14.
4
CHECK DCCD CM.
1) Turn the ignition switch to OFF.
2) Disconnect the DCCD CM connector
(B380).
3) Turn the ignition switch to ON.
4) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1201 a current malfunc-
tion?
Go to step
5.
Go to step
16.
5
CHECK STEERING ANGLE SENSOR.
1) Turn the ignition switch to OFF.
2) Connect the DCCD CM connector.
3) Disconnect the steering angle sensor con-
nector (B231).
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1201 a current malfunc-
tion?
Go to step
6.
Go to step
17.
6
CHECK YAW RATE SENSOR.
1) Turn the ignition switch to OFF.
2) Connect the steering angle sensor connec-
tor.
3) Disconnect the yaw rate sensor connector
(B230).
4) Turn the ignition switch to ON.
5) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1201 a current malfunc-
tion?
Go to step
7.
Go to step
18.
7
CHECK VDC/ABS CM.
1) Turn the ignition switch to OFF.
2) Connect the yaw rate sensor connector.
3) Disconnect the VDC/ABS CM connector
(B310).
4) Install the 120 Ω resistance to VDC/ABS
CM connector terminals.
Terminals
(B310) No. 10 — No. 35:
5) Using the tester, measure the resistance
between terminals of data link connector.
Terminals
(B40) No. 6 — No. 14:
Is the resistance 60 Ω?
Go to step
8.
Go to step
10.
8
CHECK DTC.
1) Turn the ignition switch to ON.
2) Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1201 a current malfunc-
tion?
Go to step
9.
Go to step
10.
9
CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor.
Is U1202 a current malfunc-
tion?
Replace the VDC/
ABS CM. <Ref. to
VDC-8,
REMOVAL, VDC
Control Module
and Hydraulic Con-
trol Unit
(VDCCM&H/U).>
Go to step
10.
Step
Check
Yes
No