Subaru Legacy 2002 Service Manual page 2529

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
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 31/(VDC5) No. 5 — (VDC2) No. 2:
DTC 33/(VDC5) No. 8 — (VDC2) No. 2:
DTC 35/(VDC5) No. 7 — (VDC2) No. 2:
DTC 37/(VDC5) No. 6 — (VDC2) No. 2:
DTC 61/(VDC5) No. 9 — (VDC2) No. 2:
DTC 62/(VDC5) No. 12 — (VDC2) No. 2:
2 CHECK GROUND SHORT OF SOLENOID
VALVE.
Measure resistance between VDCH/U con-
nector and chassis ground.
Connector & terminal
DTC 31/(VDC5) No. 5 — Chassis
ground:
DTC 33/(VDC5) No. 8 — Chassis
ground:
DTC 35/(VDC5) No. 7 — Chassis
ground:
DTC 37/(VDC5) No. 6 — Chassis
ground:
DTC 61/(VDC5) No. 9 — Chassis
ground:
DTC 62/(VDC5) No. 12 — 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 31/(VDC5) No. 5 (+) — Chassis
ground (−):
DTC 33/(VDC5) No. 8 (+) — Chassis
ground (−):
DTC 35/(VDC5) No. 7 (+) — Chassis
ground (−):
DTC 37/(VDC5) No. 6 (+) — Chassis
ground (−):
DTC 61/(VDC5) No. 9 (+) — Chassis
ground (−):
DTC 62/(VDC5) No. 12 (+) — Chassis
ground (−):
Step
Is the resistance between
8.04 and 9.04 Ω?
Is the resistance more than
1 MΩ?
Is the voltage less than 1
V?
VDC-70
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).>