Subaru 2004 LEGACY Service Manual page 34

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK HARNESS BETWEEN ECM AND OIL
SWITCHING SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM and oil
switching solenoid valve.
3) Measure the resistance between ECM and
oil switching solenoid valve.
Connector & terminal
(B135) No. 25 — (E70) No. 1:
(B135) No. 24 — (E70) No. 2:
2 CHECK OIL SWITCHING SOLENOID VALVE.
1) Remove the oil switching solenoid valve
connector.
2) Measure the resistance between oil switch-
ing solenoid valve terminals.
Terminals
No. 1 — No. 2:
Check
Is the resistance less than 1
Ω?
Is the resistance 6 — 12 Ω?
EN(H6DO)(diag)-103
ENGINE (DIAGNOSTICS)
Yes
Go to step 2. Repair the open
circuit in harness
between ECM and
oil switching sole-
noid valve connec-
tor.
NOTE:
In this case repair
the following:
• Open circuit in
harness between
ECM and oil
switching solenoid
valve connector
• Poor contact in
coupling connector
Repair the poor Replace the oil
contact in ECM switching solenoid
and oil switching valve. <Ref. to
solenoid valve. ME(H6DO)-78, Oil
Flow Control Sole-
noid Valve.>
No