Subaru Legacy III (2000-2003 year). Service manual — part 751
VDC-40
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
C: VDC OPERATING INDICATOR LIGHT DOES NOT GO OFF.
DIAGNOSIS:
• VDC operating indicator light circuit is open or shorted.
TROUBLE SYMPTOM:
• When starting the engine and while VDC operating indicator light is kept ON.
WIRING DIAGRAM:
• 3.0 L model
VDC00173
NO. 18 15A
SBF-4
DIAGNOSIS
TERMINAL
b5
a8
c7
L
b9
b3
c9
VDC W
A
RNING
LIGHT
VDC
OPERA
TING
b2
R
c10
c6
b1
VDC OFF
ABS
W
ARNING
G1
E1
F1
H1
18
12
11
13
20
5
R
L
13
R
L
14
7
4
16
10
54
32
52
53
13
40
55
1
28
SBF-1 100A
NO. 5 15A
8
DIAGNOSIS
CONNECTOR
VDC OFF
SWITCH
VDC CONTROL MODULE
i1
B36
B81
B82
F87
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
B82
1 2
3
4 5 6 7 8
F87
56 57
59 60
62 63
65
82 83
80
27
28
25
26
23
24
21
22
19
20
17
18
15
16
13
14
11
12
9
10
7
8
5
6
3
4
1
2
54
55
52
53
50
51
81
48
49
46
47
44
45
78
79
76
77
75
42
43
40
41
74
72
73
70
71
39
37
38
35
36
69
67
68
66
33
34
61
64
31
32
29
30
58
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
i10
a:
i11
b:
i12
B255
F96
c:
COMBINATION
METER
BATTERY
IGNITION
SWITCH
IGNITION
RELAY
i62
i61
i60
i1
B36
: LHD MODEL
: RHD MODEL
L
R
3
5
6
16
J1
i62
1
2
3 4 5 6
i12
1 2 3
8
9 10
4
11 12 13
14 15 16
5 6 7
17 18
i11
1 2 3
8 9 10
4
11 12 13 14 15 16
5 6 7
RHD
RHD
LHD
LHD
RHD
LHD
LHD
RHD
B62
L
:
B100
R
:
F45
L
:
F2
R
:
F2
i60
R
:
F96
R
:
F45
L
:
F96
L
:
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
3 4
1 2
8 9 10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
5 6
7
1 2 3
4 5 6
7 8 9 10 11 12 13 14
1 2 3
8
9 10
4
11 12 13 14 15 16
5 6 7
17 18
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
VDC-41
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
• Except 3.0 L model
Step
Value
Yes
No
1
CHECK WIRING HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect VDCCM connector from
VDCCM.
3) Turn ignition switch to ON.
Does the VDC operating indicator light
remain off?
Indicator light remains off.
Replace VDCCM.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Repair wiring har-
ness.
VDC00172
NO. 18 15A
SBF-4
DIAGNOSIS
TERMINAL
C3
c11
a1
a2
c4
VDC W
A
RNING
LIGHT
VDC
OPERA
TING
c6
VDC OFF
ABS
W
ARNING
G1
E1
H1
18
12
11
13
20
5
R
L
13
R
L
14
7
4
16
10
54
32
52
53
13
40
55
1
28
SBF-1 100A
NO. 5 15A
8
DIAGNOSIS
CONNECTOR
VDC OFF
SWITCH
VDC CONTROL MODULE
i1
B36
B81
B82
F87
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
B82
1 2
3
4 5 6 7 8
F87
56 57
59 60
62 63
65
82 83
80
27
28
25
26
23
24
21
22
19
20
17
18
15
16
13
14
11
12
9
10
7
8
5
6
3
4
1
2
54
55
52
53
50
51
81
48
49
46
47
44
45
78
79
76
77
75
42
43
40
41
74
72
73
70
71
39
37
38
35
36
69
67
68
66
33
34
61
64
31
32
29
30
58
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
i10
a:
i12
c:
B255
F96
COMBINATION
METER
BATTERY
IGNITION
SWITCH
IGNITION
RELAY
i62
i61
i60
i1
B36
: LHD MODEL
: RHD MODEL
L
R
3
5
6
16
J1
i62
1
2
3 4 5 6
i12
1 2 3
8
9 10
4
11 12 13
14 15 16
5 6 7
17 18
RHD
RHD
LHD
LHD
RHD
LHD
LHD
RHD
B62
L
:
B100
R
:
F45
L
:
F2
R
:
F2
i60
R
:
F96
R
:
F45
L
:
F96
L
:
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
3 4
1 2
8 9 10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
5 6
7
1 2 3
4 5 6
7 8 9 10 11 12 13 14
1 2 3
8
9 10
4
11 12 13 14 15 16
5 6 7
17 18
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
VDC-42
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
D: VDC OFF INDICATOR LIGHT DOES NOT GO OFF.
DIAGNOSIS:
• VDC OFF indicator light circuit is open or shorted.
• VDC OFF switch is shorted.
TROUBLE SYMPTOM:
• When starting the engine and while VDC OFF indicator light is kept ON.
NOTE:
When pushing the VDC OFF switch for 10 seconds or more while revving the engine, the VDC OFF indicator
light goes off and operations cannot be continued. Turn ignition switch from OFF to ON again to recover the
previous condition.
VDC-43
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
WIRING DIAGRAM:
• 3.0 L model
VDC00173
NO. 18 15A
SBF-4
DIAGNOSIS
TERMINAL
b5
a8
c7
L
b9
b3
c9
VDC W
A
RNING
LIGHT
VDC
OPERA
TING
b2
R
c10
c6
b1
VDC OFF
ABS
W
ARNING
G1
E1
F1
H1
18
12
11
13
20
5
R
L
13
R
L
14
7
4
16
10
54
32
52
53
13
40
55
1
28
SBF-1 100A
NO. 5 15A
8
DIAGNOSIS
CONNECTOR
VDC OFF
SWITCH
VDC CONTROL MODULE
i1
B36
B81
B82
F87
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
B82
1 2
3
4 5 6 7 8
F87
56 57
59 60
62 63
65
82 83
80
27
28
25
26
23
24
21
22
19
20
17
18
15
16
13
14
11
12
9
10
7
8
5
6
3
4
1
2
54
55
52
53
50
51
81
48
49
46
47
44
45
78
79
76
77
75
42
43
40
41
74
72
73
70
71
39
37
38
35
36
69
67
68
66
33
34
61
64
31
32
29
30
58
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
i10
a:
i11
b:
i12
B255
F96
c:
COMBINATION
METER
BATTERY
IGNITION
SWITCH
IGNITION
RELAY
i62
i61
i60
i1
B36
: LHD MODEL
: RHD MODEL
L
R
3
5
6
16
J1
i62
1
2
3 4 5 6
i12
1 2 3
8
9 10
4
11 12 13
14 15 16
5 6 7
17 18
i11
1 2 3
8 9 10
4
11 12 13 14 15 16
5 6 7
RHD
RHD
LHD
LHD
RHD
LHD
LHD
RHD
B62
L
:
B100
R
:
F45
L
:
F2
R
:
F2
i60
R
:
F96
R
:
F45
L
:
F96
L
:
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
3 4
1 2
8 9 10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
5 6
7
1 2 3
4 5 6
7 8 9 10 11 12 13 14
1 2 3
8
9 10
4
11 12 13 14 15 16
5 6 7
17 18
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
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