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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
R: DTC B0300 CAN-LS MALFUNCTION
DTC DETECTING CONDITION:
Either end of low-speed CAN communication line is open or shorted, the connector is not connected prop-
erly, or the terminal has poor crimping.
TROUBLE SYMPTOM:
"Er LC" is displayed in odo/trip meter, but communicating function is OK.
WIRING DIAGRAM:
CAN JOINT
CONNECTOR
A:
i84
A27
A26
BODY
INTEGRATED
UNIT
B26
AE
AE
B25
B: B280
Step
1
CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor.
2
CHECK DTC.
Check the DTC displayed in the body inte-
grated unit.
3
CHECK DTC.
Turn the ignition switch to OFF and read the
DTC again.
COMBINATION METER
i10
i77
ON :
WN :
*
*
Is there any DTC other than
B0300?
Is the DTC displayed currently
malfunctioning?
Is B0300 currently malfunction-
ing?
LAN(diag)-67
4
CENTER
DISPLAY
2
i92
WN
14
CENTER
DISPLAY
WN
6
i90
1
AUTO A/C
CONTROL
MODULE
11
B283
WITHOUT NAVIGATION
WITH NAVIGATION
1
:
TERMINAL No. OPTIONAL
ARRANGEMENT
AMONG 1, 2, 3, 4, 5 AND 6
TERMINAL No. OPTIONAL
2
:
ARRANGEMENT
AMONG 7, 8, 9, 10, 11 AND 12
AE
:
WITH AUTO A/C
Check
LAN SYSTEM (DIAGNOSTICS)
A:
i84
1 2
3 4
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
24 25
26 27 28 29
30 31 32 33
B: B280
1
2
3
4
8
9
10
11 12 13 14 15
16 17 18
1 2
22
23
24 25
26 27
i10
1
2 3 4 5
6 7 8 9
11
12 13 14 15 16 17 18 19 20 21 22
B283
1
2
3
4
5 6 7
8
11
12
13
14 15 16 17
18
i90
1
2
3
4
5 6 7
8
10
11
12 13 14 15
i77
1 2 3 4 5 6 7 8 9 10 11 12
i92
1 2
3 4
Yes
Perform the diag-
Go to step 2.
nosis according to
other DTC.
Check the connec-
Go to step 3.
tion of harness
connector. Go to
step 3.
Go to step 4.
Temporary poor
contact occurs.
5 6
7 8
34 35
5
6 7
19 20
28 29
0 3
10
9
10
19 20
8
16
LAN00254
No
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