Subaru LEGACY 2004 Service Manual page 789

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
U: DTC B0311 CAN-LS METER UNIT DATA ABNORMAL
DTC DETECTING CONDITION:
Combination meter error, or harness between the main harness splice 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
Step
1 CHECK COMBINATION METER.
Perform the self-diagnosis for combination
meter. <Ref. to IDI-3, SELF-DIAGNOSIS,
INSPECTION, Combination Meter System.>
COMBINATION METER
A:
i77
A:
INTEGRATED UNIT
Is the self-diagnosis OK?
LAN(diag)-73
i10
i84
Check
Read the DTC
again, and then
perform the diag-
nosis according to
DTC displayed on
the top.
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
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
LAN00032
Yes No
Replace the com-
bination meter.
<Ref. to IDI-16,
Combination
Meter Assembly.>
7 8
34 35
10