EN(H4DOTC)(diag)-169
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND OIL
FLOW CONTROL SOLENOID VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and
oil flow control solenoid valve.
3) Measure the resistance between ECM and
oil flow control solenoid valve.
Connector & terminal
(B134) No. 18 — (E38) No. 1:
(B134) No. 28 — (E38) No. 2:
Is the resistance less than 1
Ω?
Go to step 2.
Repair the open
circuit of harness
between ECM and
oil flow control
solenoid valve
connector.
NOTE:
In this case, repair
the following:
• Open circuit of
harness between
ECM and oil flow
control solenoid
valve connector
• Poor contact in
coupling connector
2
CHECK OIL FLOW CONTROL SOLENOID
VALVE.
1) Disconnect the oil flow control solenoid
valve connector.
2) Measure the resistance between oil flow
control solenoid valve terminals.
Terminals
No. 1 — No. 2:
Is the resistance 6 — 12
Ω?
Repair the poor
contact in ECM
and oil flow con-
trol solenoid valve.
Replace the oil
flow control sole-
noid valve. <Ref.
to ME(H4DOTC)-
56, Camshaft.>