Subaru LEGACY 2003 Service Manual page 207

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
12 CHECK GROUND SHORT IN CONTROL
SYSTEM HARNESS OF VALVE RELAY.
Measure resistance between VDCCM connec-
tor and chassis ground.
Connector & terminal
(F87) No. 47 — Chassis ground:
(F87) No. 27 — Chassis ground:
Does the measured value exceed the specified
value?
13 CHECK OPEN CIRCUIT IN CONTACT POINT
CIRCUIT OF RELAY BOX.
Measure resistance between VDCH/U connec-
tor and valve relay installing point.
Connector & terminal
(VDC1) No. 2 — (VDC6) No. 30:
Is the measured value less than the specified
value?
14 CHECK GROUND SHORT IN CONTACT
POINT CIRCUIT OF RELAY BOX.
Measure resistance between VDCH/U connec-
tor and chassis ground.
Connector & terminal
(VDC1) No. 2 — Chassis ground:
Does the measured value exceed the specified
value?
15 CHECK RESISTANCE OF INLET AND CUT
SOLENOID VALVES.
1) Disconnect connector from VDCH/U.
2) Measure resistance between VDCH/U con-
nector terminals.
Connector & terminal
(VDC5) No. 8 — (VDC2) No. 2:
(VDC5) No. 5 — (VDC2) No. 2:
(VDC5) No. 6 — (VDC2) No. 2:
(VDC5) No. 7 — (VDC2) No. 2:
(VDC5) No. 9 — (VDC2) No. 2:
(VDC5) No. 12 — (VDC2) No. 2:
Is the measured value within the specified
range?
16 CHECK RESISTANCE OF OUTLET SOLE-
NOID VALVE.
Measure resistance between VDCH/U connec-
tor terminals.
Connector & terminal
(VDC5) No. 4 — (VDC2) No. 2:
(VDC5) No. 1 — (VDC2) No. 2:
(VDC5) No. 2 — (VDC2) No. 2:
(VDC5) No. 3 — (VDC2) No. 2:
(VDC5) No. 10 — (VDC2) No. 2:
(VDC5) No. 11 — (VDC2) No. 2:
Is the measured value within the specified
range?
Value
1 MΩ
0.5 Ω
1 MΩ
8.04 — 9.04 Ω
4.04 — 4.54 Ω
VDC-205
VDC (DIAGNOSTICS)
Yes
Go to step 13. Repair harness
between VDCCM
and relay box.
Go to step 14. Replace relay box.
Go to step 15. Replace relay box
and check fuse
No. 8.
Go to step 16. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Go to step 17. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
No