Subaru Forester 2004 Service Manual page 224

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK HARNESS BETWEEN ECM AND OIL
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM and oil
flow control solenoid valve.
3) Measure the resistance between ECM and
oil flow control solenoid valve.
Connector & terminal
(B134) No. 19 — (E37) No. 1:
(B134) No. 29 — (E37) No. 2:
2 CHECK HARNESS BETWEEN ECM AND OIL
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM and oil
flow control solenoid valve.
3) Measure the resistance between oil flow
control solenoid valve and engine ground.
Connector & terminal
(E37) No. 1 — Engine ground:
(E37) No. 2 — Engine ground:
3 CHECK OIL FLOW CONTROL SOLENOID
VALVE.
1) Remove the oil flow control solenoid valve
connector.
2) Measure the resistance between oil flow
control solenoid valve terminals.
Terminals
No. 1 — No. 2:
Check
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance 6 — 12 Ω?
EN(H4DOTC 2.5)-223
ENGINE (DIAGNOSTIC)
Yes
Go to step 2. Repair open circuit
in harness between
ECM and oil flow
control solenoid
valve connector.
NOTE:
In this case, repair
the following
• Open circuit in
harness between
ECM and oil flow
control solenoid
valve connector
• Poor contact in
coupling connector
Go to step 3. Repair short circuit
between ECM and
oil flow control
solenoid valve
connector.
Repair poor con- Replace the oil
tact in ECM and oil flow control sole-
flow control sole- noid valve. <Ref.
noid valve. to ME(H4DOTC)-
68, Camshaft.>
No