Subaru LEGACY 2003 Service Manual page 211

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
1 CHECK CONTACT POINT OF VALVE RE-
LAY.
1) Turn ignition switch to OFF.
2) Remove valve relay from relay box.
3) Connect battery to valve relay terminals
No. 85 and No. 86.
4) Measure resistance between valve relay
terminals.
Terminals
No. 30 — No. 87:
Is the measured value less than the speci-
fied value?
2 CHECK CONTACT POINT OF VALVE RE-
LAY.
Measure resistance between valve relay termi-
nals.
Terminals
No. 30 — No. 87a:
Does the measured value exceed the specified
value?
3 CHECK CONTACT POINT OF VALVE RE-
LAY.
1) Disconnect battery from valve relay termi-
nals.
2) Measure resistance between valve relay
terminals.
Terminals
No. 30 — No. 87:
Does the measured value exceed the spec-
ified value?
4 CHECK CONTACT POINT OF VALVE RE-
LAY.
Measure resistance between valve relay termi-
nals.
Terminals
No. 30 — No. 87a:
Is the measured value less than the specified
value?
5 CHECK SHORT OF VALVE RELAY.
Measure resistance between valve relay termi-
nals.
Terminals
No. 86 — No. 87:
No. 86 — No. 87a:
Does the measured value exceed the specified
value?
6 CHECK BATTERY SHORT IN CONTACT
POINT CIRCUIT OF RELAY BOX.
1) Disconnect connector (F90) from relay box.
2) Measure voltage between relay box con-
nector and chassis ground.
Connector & terminal
(VDC4) No. 5 (+) — Chassis ground ( − − − − ):
(VDC4) No. 1 (+) — Chassis ground ( − − − − ):
Is the measured value less than the speci-
fied value?
Value
0.5 Ω
1 MΩ
1 MΩ
0.5 Ω
1 MΩ
1 V
VDC-209
VDC (DIAGNOSTICS)
Yes
Go to step 2. Replace valve
relay.
Go to step 3. Replace valve
relay.
Go to step 4. Replace valve
relay.
Go to step 5. Replace valve
relay.
Go to step 6. Replace valve
relay.
Go to step 7. Replace relay box.
Check fuse No. 8
and SBF3.
No