Subaru Legacy III (2000-2003 year). Service manual — part 802
VDC-244
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
7
CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 65 (+) — Chassis ground (
−−−−
):
Is the measured value less than the speci-
fied value?
0.5 V
Replace yaw rate
and lateral G sen-
sor. <Ref. to VDC-
22, Yaw Rate and
Lateral G Sensor.>
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
Step
Value
Yes
No
VDC-245
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
MEMO:
VDC-246
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
AV:DTC 72 ABNORMAL YAW RATE SENSOR REFERENCE VOLTAGE
DIAGNOSIS:
• Faulty yaw rate sensor
TROUBLE SYMPTOM:
• VDC does not operate.
WIRING DIAGRAM:
VDC00182
65
63
67
66
70
64
10
11
9
F88
F55
R49
4
3
12
2
4
5
8
1
5
6
R100
6
F88
R100
F55
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
F87
VDC
CONTROL
MODULE
YAW RATE
AND LATERAL G
SENSOR
1
3
4 5 6
2
1 2 3
4 5
6 7 8 9 10 11 12
3
1
3
4 5 6
2
VDC-247
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
Step
Value
Yes
No
1
CHECK POWER SUPPLY OF YAW RATE
AND LATERAL G SENSOR.
1) Turn ignition switch OFF.
2) Disconnect connector from yaw rate and
lateral G sensor.
3) Turn ignition switch to ON.
4) Measure voltage between yaw rate and lat-
eral G sensor and chassis ground.
Connector & terminal
(R100) No. 3 (
++++
) — Chassis ground (
−−−−
):
Is the measured value within the specified
range?
10 — 15 V
2
CHECK OUTPUT VOLTAGE OF VDCCM.
1) Turn ignition switch to OFF.
2) Disconnect connector from VDCCM.
3) Remove cover for VDCCM connector.
<Ref. to VDC-19, REMOVE, VDCCM Con-
nector Cover.>
4) Connect connector to VDCCM.
5) Turn ignition switch to ON.
6) Measure voltage between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 63 (
++++
) — Chassis ground (
−−−−
):
Is the measured value within the specified
range?
10 — 15 V
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
3
CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in yaw rate and lateral G
sensor connector?
There is poor contact.
Repair or replace
VDCCM connec-
tor.
Replace VDCCM.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
4
CHECK HARNESS OF YAW RATE AND LAT-
ERAL G SENSOR.
1) Disconnect connector from VDCCM.
2) Measure resistance between VDCCM and
yaw rate and lateral G sensor.
Connector & terminal
(F87) No. 66 — (R100) No. 1:
Is the measured value less than the speci-
fied value?
0.5
Ω
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
5
CHECK GROUND SHORT OF HARNESS.
Measure resistance between VDCCM and
chassis ground.
Connector & terminalDoes the measured
value exceed the specified value?
(F87) No. 66 — Chassis ground:
Does the measured value exceed the specified
value?
1 M
Ω
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
6
CHECK BATTERY SHORT OF HARNESS.
Measure voltage between VDCCM and chas-
sis ground.
Connector & terminal
(F87) No. 66 (+) — Chassis ground (
−−−−
):
Is the measured value less than the specified
value?
0.5 V
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
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