Subaru LEGACY 2006 Manual page 376

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ENGINE (DIAGNOSTICS)
D: MALFUNCTION INDICATOR LIGHT DOES NOT GO OFF.
DIAGNOSIS:
The malfunction indicator light circuit is shorted.
TROUBLE SYMPTOM:
Although malfunction indicator light comes on when the engine runs, DTC is not shown on the Subaru Select
Monitor display.
WIRING DIAGRAM:
B136 ECM
B72
1 2 3
4 5 6
Step
1 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Turn the ignition switch to ON.
Malfunction Indicator Light
IGNITION
B72
SWITCH
No.5
6
COMBINATION
METER
i10
i3
B38
B136
1 2 3 4 5 6 1 2
7 8 9 10 11 12 13 14 15 16 11 12
17 18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35
Does the malfunction indicator
light illuminate?
EN(H4SO)(diag)-50
SBF-6 MAIN SBF
3
i10
3 4 5 6 7 8 9 10
1 2 3 4
13 14 15 16 17 18 19 20 21 22
10 11 12 13 14 15 16 17 18 19 20
Check
Repair the short
circuit of harness
between combina-
tion meter and
ECM connector.
BATTERY
E
B38
5 6 7 8 9
EN-04018
Yes No
Replace the ECM.
<Ref. to
FU(H4SO)-36,
Engine Control
Module (ECM).>