Subaru Legacy III (2000-2003 year). Service manual — part 804
VDC-252
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
7
CHECK GROUND CIRCUIT OF VDCCM.
1) Disconnect connector from VDCCM.
2) Remove cover from VDCCM connector.
<Ref. to VDC-19, VDCCM Connector
Cover.>
3) Connect connector to VDCCM.
4) Measure resistance between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 64 — Chassis ground:
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.
8
CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in VDCCM connector?
There is poor contact.
Repair or replace
VDCCM connec-
tor.
Replace VDCCM.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
9
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. 65 — (R100) No. 4:
(F87) No. 66 — (R100) No. 1:
(F87) No. 67 — (R100) No. 2:
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.
10
CHECK GROUND SHORT OF HARNESS.
Measure resistance between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 65 — Chassis ground:
(F87) No. 66 — Chassis ground:
(F87) No. 67 — 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.
11
CHECK BATTERY SHORT OF HARNESS.
Measure voltage between VDCCM and chas-
sis ground.
Connector & terminal
(F87) No. 65 (+) — Chassis ground (
−−−−
):
(F87) No. 66 (+) — Chassis ground (
−−−−
):
(F87) No. 67 (+) — 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.
12
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 (
−−−−
):
(F87) No. 66 (
++++
) — Chassis ground (
−−−−
):
(F87) No. 67 (
++++
) — Chassis ground (
−−−−
):
Is the measured value less than the speci-
fied value?
0.5 V
Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
Step
Value
Yes
No
VDC-253
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
13
CHECK YAW RATE AND LATERAL G SEN-
SOR.
1) Turn ignition switch to OFF.
2) Install yaw rate and lateral G sensor to
body.
3) Connect all connectors.
4) Turn ignition switch to ON.
5) Measure voltage between yaw rate and lat-
eral G sensor connector terminals.
Connector & terminal
(F87) No. 66 (+) — No. 64 (
−−−−
):
Is the measured value within the specified
range?
2.1 — 2.9 V
Replace VDCCM.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Replace yaw rate
and lateral G sen-
sor. <Ref. to VDC-
22, Yaw Rate and
Lateral G Sensor.>
Step
Value
Yes
No
VDC-254
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
AX:DTC 73 LATERAL G SENSOR OFFSET IS TOO BIG.
NOTE:
For diagnostic procedure, refer to DTC 73. <Ref. to VDC-256, DTC 73 EXCESSIVE LATERAL G SENSOR
SIGNAL, Diagnostics Chart with Select Monitor.>
AY:DTC 73 ABNORMAL LATERAL G SENSOR OUTPUT
NOTE:
For diagnostic procedure, refer to DTC 73. <Ref. to VDC-256, DTC 73 EXCESSIVE LATERAL G SENSOR
SIGNAL, Diagnostics Chart with Select Monitor.>
AZ:DTC 73 CHANGE RANGE OF LATERAL G SENSOR IS TOO BIG.
NOTE:
For diagnostic procedure, refer to DTC 73. <Ref. to
VDC-256, DTC 73 EXCESSIVE LATERAL G SEN-
SOR SIGNAL, Diagnostics Chart with Select Mon-
itor.>
VDC-255
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
MEMO:
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