Subaru Legacy III (2000-2003 year). Service manual — part 315
EN(H6DO)-62
ENGINE (DIAGNOSTICS)
ENGINE MALFUNCTION INDICATOR LAMP (MI)
6
CHECK HARNESS BETWEEN COMBINA-
TION METER AND IGNITION SWITCH CON-
NECTOR.
Measure voltage between combination meter
connector and chassis ground.
Connector & terminal
(i10) No. 8 (+) — Chassis ground (
−−−−
):
(i11) No. 5 (+) — Chassis ground (
−−−−
):
Does the measured value exceed the specified
value?
10 V
Check the follow-
ing and repair if
necessary.
NOTE:
• Broken down
ignition relay.
• Blown out fuse
(No. 5).
• If replaced fuse
(No. 5) blows eas-
ily, check the har-
ness for short
circuit of harness
between fuse (No.
5) and ignition
relay connector.
• Open or short
circuit in harness
between fuse (No.
5) and battery ter-
minal
• Open circuit in
harness between
fuse (No. 5) and
ignition relay con-
nector
• Poor contact in
ignition relay con-
nector
• Poor contact in
ignition switch
connector
7
CHECK LAMP BULB.
Remove engine malfunction indicator lamp
bulb.
Is lamp bulb condition OK?
Bulb is OK.
Repair combina-
tion meter connec-
tor.
Replace lamp
bulb.
Step
Value
Yes
No
EN(H6DO)-63
ENGINE (DIAGNOSTICS)
ENGINE MALFUNCTION INDICATOR LAMP (MI)
MEMO:
EN(H6DO)-64
ENGINE (DIAGNOSTICS)
ENGINE MALFUNCTION INDICATOR LAMP (MI)
D: CHECK ENGINE MALFUNCTION INDICATOR LAMP (MI) DOES NOT GO
OFF.
• DIAGNOSIS:
• The CHECK ENGINE malfunction indicator lamp (MI) circuit is shorted.
• TROUBLE SYMPTOM:
• Although MI comes on when engine runs, trouble code is not shown on Subaru select monitor or OBD-
II general scan tool display.
• WIRING DIAGRAM:
EN-01080
IGNITION
RELAY
SBF-4
No. 5
SBF-1
A4
4
1
B157
B72
B137
B36
i1
IGNITION
SWITCH
B36
B4 B5 B6
A4 A5 A6
C5 C6
F6
D4 D5 D6
F1
H1
C4
G6
G1
C2
K1
M1 M2
K6
L1
D1 D2
A1 A2
B1 B2
I6
J6
L2
I1
J1
H6
M4 M5 M6
L4 L5 L6
N5 N6
O4 O5 O6
N4
P4 P5
N2
O1 O2
P1 P2
N3
O3
P3
P6
A3
B3
C3
E4 E5 E6
E1 E2
B137
i10
B72
3 4
1 2
BATTERY
15
ECM
B157
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 36
37
38
1 2
9
3 4
5 6
7 8
COMBINATION
METER
A:
A8
B5
i10
B:
i11
C:
i12
1
2
7
8
9
5
6
3
4
10 11 12
19 20 21
29 30 31
13 14 15 16 17
27 28
18
22 23 24 25 26
LHD : 9
RHD : 38
1
*
2
*
3
*
4
*
5
*
LHD : 13
RHD : 36
LHD : 11
RHD : 34
LHD : 10
RHD : 37
LHD : C11
RHD : B10
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
i11
B:
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
C:
A:
i12
1 2 3
8
9 10
4
11 12 13
14 15 16
5 6 7
17 18
5
*
1
*
2
*
3
*
4
*
EN(H6DO)-65
ENGINE (DIAGNOSTICS)
ENGINE MALFUNCTION INDICATOR LAMP (MI)
Step
Value
Yes
No
1
CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Turn ignition switch to ON.
Does the MI come on?
MI comes on.
Repair short circuit
in harness
between combina-
tion meter and
ECM connector.
Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>
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