Subaru LEGACY 2004 Service Manual page 781

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
R: DTC B0300 CAN-LS MALFUNCTION
DTC DETECTING CONDITION:
Each side of low-speed CAN communication line is open or shorted, connector is not connected securely, the
terminal has poor caulking.
TROUBLE SYMPTOM:
"Er LC" is displayed in odo/trip meter, but no interfere on communication.
WIRING DIAGRAM:
CAN JOINT
CONNECTOR
A27 P
V
A26
BODY
INTEGRATED
UNIT B26 P AE
B25 V AE
A: i84
B: B280
COMBINATION METER
A:
i77
LAN(diag)-65
i10
MODEL WITHOUT
NAVIGATION SYSTEM
V 4
CENTER
DISPLAY
P 2
i103
MODEL WITH
NAVIGATION SYSTEM
V A14
CENTER
P DISPLAY
A6
A: i90
AUTO A/C
P B1
CONTROL
V B11
MODULE
B: B283
AE : WITH AUTO A/C
LAN SYSTEM (DIAGNOSTICS)
A: i84
1 2 3 4 5 6
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 5 6 7
8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29
A: i90 (BLACK)
4 5 6 7
1 2 3 8
8 10 11 12 13 14 15 16
A: i10 (BLACK)
1 2 3 4 5 6 7 8 9
11 12 13 14 15 16 17 18 19 20 21 22
i77
1 2 3 4 5 6 7 8 9 10 11 12
i103
1 2
3 4
B: B283
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
LAN00115
7 8
34 35
30
10