Subaru Forester 2004 Service Manual page 50

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 or OBD-II general scan tool display.
WIRING DIAGRAM:
B9
A1
COMBINATION
METER
A:
i12
B:
i10
B: i10
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
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.14
4
B38
i3
i3
B38
ECM
B134
B72
1 2
3 4
1 2 3 4
10 11 12 13 14 15
22 23 24 25
Does malfunction indicator
light illuminate?
EN(H4DOTC 2.5)-49
SBF-4 SBF-1
1
A: i12
1 2 3 4 5 6
7 8 9 10 11 12 13 14
i3
5 6 7 8 9
16 17 18 19 20 21
26 27 28 29 30 31 32
Check
ENGINE (DIAGNOSTIC)
BATTERY
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 short circuit Replace the ECM.
in harness <Ref. to
between combina- FU(H4DOTC 2.5)-
tion meter and 41, Engine Con-
ECM connector. trol Module
(ECM).>
E
EN-02354
No