Subaru Legacy 2002 Service Manual page 2621

DIAGNOSTICS CHART WITH SELECT MONITOR
VDC (Diagnostics)
No.
1 CHECK RESISTANCE OF SOLENOID
VALVE.
1) Turn ignition switch to OFF.
2) Disconnect two connectors (VDC1, F91)
from VDCH/U.
3) Measure resistance between VDCH/U con-
nector terminals.
Connector & terminal
DTC 32/(VDC5) No. 1 — (VDC2) No. 2:
DTC 34/(VDC5) No. 4 — (VDC2) No. 2:
DTC 36/(VDC5) No. 3 — (VDC2) No. 2:
DTC 38/(VDC5) No. 2 — (VDC2) No. 2:
DTC 63/(VDC5) No. 10 — (VDC2) No. 2:
DTC 64/(VDC5) No. 11 — (VDC2) No. 2:
2 CHECK GROUND SHORT OF SOLENOID
VALVE.
Measure resistance 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:
3 CHECK BATTERY SHORT OF SOLENOID
VALVE.
1) Disconnect connector from VDCCM.
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 (−):
Step
Is the resistance between
3.8 and 4.8 Ω?
Is the resistance more than
1 MΩ?
Is the voltage less than 1
V?
VDC-162
Check Yes
Go to step 2.
Go to step 3.
Go to step 4.
No
Replace VDCH/U.
<Ref. to VDC-11,
Hydraulic Control
Unit (H/U).>
Replace VDCH/U.
<Ref. to VDC-11,
Hydraulic Control
Unit (H/U).>
Replace VDCH/U.
<Ref. to VDC-11,
Hydraulic Control
Unit (H/U).>