Subaru LEGACY 2004 Service Manual page 790

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
V: DTC B0313 CAN-LS MONITOR DATA ABNORMAL
DTC DETECTING CONDITION:
Center display unit error, or harness between the center display unit and combination meter is open or short,
the connector is not connected securely and the terminal has poor caulking.
TROUBLE SYMPTOM:
"Er LC" is displayed in odo/trip meter.
WIRING DIAGRAM:
CAN JOINT CONNECTOR
A27
BODY
INTEGRATED
UNIT A26
A: i84
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
Step
1 CHECK CENTER DISPLAY.
1) Display the current data of body integrated
unit using Subaru Select Monitor.
2) Read the fail display of center display.
2 CHECK NAVIGATION.
1) Display the current data of body integrated
unit using Subaru Select Monitor.
2) Read the display of NAVI fail.
i77
P
V
A: i90
7 8
4 5 6 7
1 2 3
8 10 11 12 13 14 15
34 35
LAN(diag)-74
TWISTED WIRE
(BLACK)
1 2 3 4 5 6 7 8 9 10 11 12
8
16
Check
Is center display fail OK?
Is NAVI fail OK?
MODEL WITHOUT
NAVIGATION SYSTEM
4
V
CENTER
DISPLAY
2
P
A:
MODEL WITH
NAVIGATION SYSTEM
V A14
CENTER
DISPLAY
P
A6
A:
i103
i77
1 2
3 4
Yes
Go to step 2. Replace the center
display.
Replace the center Send the naviga-
display. tion unit to repair
center.
i103
i90
LAN00116
No