Subaru LEGACY 2003 Service Manual page 74

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (DIAGNOSTICS)
4 CHECK BATTERY SHORT OF SOLENOID
VALVE.
1) Turn ignition switch to ON.
2) Measure voltage between VDCH/U con-
nector and chassis ground.
Connector & terminal
DTC 32/(VDC5) No. 1 (+) — Chassis
ground ( − − − − ):
DTC 34/(VDC5) No. 4 (+) — Chassis
ground ( − − − − ):
DTC 36/(VDC5) No. 3 (+) — Chassis
ground ( − − − − ):
DTC 38/(VDC5) No. 2 (+) — Chassis
ground ( − − − − ):
DTC 63/(VDC5) No. 10 (+) — Chassis
ground ( − − − − ):
DTC 64/(VDC5) No. 11 (+) — Chassis
ground ( − − − − ):
Is the measured value less than the speci-
fied value?
5 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Measure voltage between VDCCM connec-
tor and chassis ground.
Connector & terminal
DTC 32/(F87) No. 3 (+) — Chassis
ground ( − − − − ):
DTC 34/(F87) No. 51 (+) — Chassis
ground ( − − − − ):
DTC 36/(F87) No. 50 (+) — Chassis
ground ( − − − − ):
DTC 38/(F87) No. 4 (+) — Chassis
ground ( − − − − ):
DTC 63/(F87) No. 29 (+) — Chassis
ground ( − − − − ):
DTC 64/(F87) No. 2 (+) — Chassis
ground ( − − − − ):
Is the measured value less than the speci-
fied value?
6 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between VDCCM connec-
tor and chassis ground.
Connector & terminal
DTC 32/(F87) No. 3 (+) — Chassis
ground ( − − − − ):
DTC 34/(F87) No. 51 (+) — Chassis
ground ( − − − − ):
DTC 36/(F87) No. 50 (+) — Chassis
ground ( − − − − ):
DTC 38/(F87) No. 4 (+) — Chassis
ground ( − − − − ):
DTC 63/(F87) No. 29 (+) — Chassis
ground ( − − − − ):
DTC 64/(F87) No. 2 (+) — Chassis
ground ( − − − − ):
Is the measured value less than the speci-
fied value?
Step Value
1 V
1 V
1 V
VDC-72
Yes
Go to step 5. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Go to step 6. Repair harness
between VDCCM
and VDCH/U.
Go to step 7. Repair harness
between VDCCM
and VDCH/U.
No