Subaru LEGACY 2003 Service Manual page 108

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (DIAGNOSTICS)
27 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between VDCCM connec-
tor and chassis ground.
Connector & terminal
(F87) No. 30 (+) — Chassis ground ( − − − − ):
(F87) No. 24 (+) — Chassis ground ( − − − − ):
(F87) No. 23 (+) — Chassis ground ( − − − − ):
(F87) No. 31 (+) — Chassis ground ( − − − − ):
(F87) No. 26 (+) — Chassis ground ( − − − − ):
(F87) No. 25 (+) — Chassis ground ( − − − − ):
(F87) No. 3 (+) — Chassis ground ( − − − − ):
(F87) No. 51 (+) — Chassis ground ( − − − − ):
(F87) No. 50 (+) — Chassis ground ( − − − − ):
(F87) No. 4 (+) — Chassis ground ( − − − − ):
(F87) No. 2 (+) — Chassis ground ( − − − − ):
(F87) No. 29 (+) — Chassis ground ( − − − − ):
Is the measured value less than the speci-
fied value?
28 CHECK GROUND SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Measure resistance between VDCCM con-
nector and chassis ground.
Connector & terminal
(F87) No. 30 — Chassis ground:
(F87) No. 24 — Chassis ground:
(F87) No. 23 — Chassis ground:
(F87) No. 31 — Chassis ground:
(F87) No. 26 — Chassis ground:
(F87) No. 25 — Chassis ground:
(F87) No. 3 — Chassis ground:
(F87) No. 51 — Chassis ground:
(F87) No. 50 — Chassis ground:
(F87) No. 4 — Chassis ground:
(F87) No. 2 — Chassis ground:
(F87) No. 29 — Chassis ground:
Does the measured value exceed the spec-
ified value?
29 CHECK HARNESS/CONNECTOR BETWEEN
VDCCM AND VDCH/U.
1) Connect connector (F91) to VDCH/U.
2) Measure resistance between VDCCM con-
nector and VDCH/U connector.
Connector & terminal
(F87) No. 30 — (VDC2) No. 2:
(F87) No. 24 — (VDC2) No. 2:
(F87) No. 23 — (VDC2) No. 2:
(F87) No. 31 — (VDC2) No. 2:
(F87) No. 26 — (VDC2) No. 2:
(F87) No. 25 — (VDC2) No. 2:
Is the measured value within the specified
range?
Step Value
1 V
1 MΩ
8.0 — 10.0 Ω
VDC-106
Yes
Go to step 28. Repair harness
between VDCH/U
and VDCCM and
check all fuses.
Go to step 29. Repair harness
between VDCH/U
and VDCCM.
Go to step 30. Repair harness/
connector
between VDCH/U
and VDCCM.
No