Subaru Legacy 2004 Service Manual page 1326

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:
3
4
16
COMBINATION
METER
i10
i10
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19
Step
1 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Turn the ignition switch to ON.
Malfunction Indicator Light
IGNITION
B72
SWITCH
No.5
6
i3
B38
ECM
B134
B72
1 2 3
4 5 6
20 21 22
EN(H4DOTC)(diag)-37
SBF-7
3
B38
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
Check
Does malfunction indicator
light illuminate?
ENGINE (DIAGNOSTICS)
BATTERY
SBF-1
B134
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 30 31 32 33 34
Yes
Repair the short Replace the ECM.
circuit in harness <Ref. to
between combina- FU(H4DOTC)-35,
tion meter and Engine Control
ECM connector. Module (ECM).>
E
EN-01939
No