Subaru Legacy 2004 Service Manual page 477

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:
B135
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 connector from ECM.
3) Turn the ignition switch to ON.
Malfunction Indicator Light
B72
No.5
6
COMBINATION
METER
i10
i3
B38
ECM
B135
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 35
EN(H4SO 2.0)(diag)-45
IGNITION
SWITCH
SBF-7
3
i10
1 2 3 4 6 7 8 9 10
5
11 12 13 14 15 16 17 18 19 20 21 22
Check
Does the malfunction indicator
light illuminate?
ENGINE (DIAGNOSTICS)
BATTERY
SBF-1
E
B38
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
Yes
Repair the short Replace the ECM.
circuit in harness <Ref. to FU(H4SO
between combina- 2.0)-34, Engine
tion meter and Control Module
ECM connector. (ECM).>
EN-02425
No