Subaru LEGACY 2003 Service Manual page 245

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
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?
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, VDCCM Connector
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?
3 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in yaw rate and lateral G
sensor connector?
4 CHECK HARNESS OF YAW RATE AND LAT-
ERAL G SENSOR.
1) Turn ignition switch OFF.
2) Disconnect connector from VDCCM.
3) Measure resistance between VDCCM and
yaw rate and lateral G sensor.
Connector & terminal
(F87) No. 65 — (R100) No. 4:
Is the measured value less than the speci-
fied value?
5 CHECK GROUND SHORT OF HARNESS.
Measure resistance between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 65 — Chassis ground:
Does the measured value exceed the specified
value?
6 CHECK BATTERY SHORT OF HARNESS.
Measure voltage between VDCCM and chas-
sis ground.
Connector & terminal
(F87) No. 65 (+) — Chassis ground ( − − − − ):
Is the measured value less than the specified
value?
Value
10 — 15 V
10 — 15 V
There is poor contact.
0.5 Ω
1 MΩ
0.5 V
VDC-243
VDC (DIAGNOSTICS)
Yes
Go to step 4. Go to step 2.
Repair harness Go to step 3.
between yaw rate
and lateral G sen-
sor and VDCCM.
Repair or replace Replace VDCCM.
VDCCM connec- <Ref. to VDC-8,
tor. VDC Control Mod-
ule (VDCCM).>
Go to step 5. Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
Go to step 6. Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
Go to step 7. Repair harness
between yaw rate
and lateral G sen-
sor and VDCCM.
No