Subaru LEGACY 2003 Service Manual page 67

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
Step
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:
Is the measured value within the specified
range?
2 CHECK GROUND SHORT OF SOLENOID
VALVE.
Measure resistance between VDCH/U connec-
tor 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:
Does the measured value exceed the specified
value?
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 ( − − − − ):
Is the measured value less than the speci-
fied value?
Value
8.04 — 9.04 Ω
1 MΩ
1 V
VDC-65
VDC (DIAGNOSTICS)
Yes
Go to step 2. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Go to step 3. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Go to step 4. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
No