1A-44 Engine General Information and Diagnosis:
Step Action Yes No
8 Oil control valve electrical circuit check Go to Step 9. “YEL/RED” wire or
1) Disconnect connector from oil control valve with ignition
“YEL/GRN” wire circuit
switch turned OFF.
is open or high
2) Measure resistance between “C37-60” terminal of ECM
resistance.
connector and “YEL/RED” wire terminal of oil control
valve connector and between “C37-59” terminal of ECM
connector and “YEL/GRN” wire terminal of oil control
valve connector.
Is resistance below 1 Ω?
9 Oil control valve check Substitute a known- Faulty oil control valve.
Check oil control valve referring to “Oil Control Valve good ECM and recheck.
Inspection: in Section 1D”.
Is resistance within specified value?
DTC P0011 / P0012: Camshaft Position - Timing Over-Advanced or System Performance / -Retarded
S4RS0A1104015
System Description
Actual value of advanced valve timing does not reach target value.
Valve timing is advanced although ECM command is most retarding.
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
Actual value of advanced valve timing does not reach • Oil control valve
target value, or valve timing is advanced although ECM
• Oil galleries of timing sprocket
command is most retarding.
• Intake camshaft timing sprocket (Camshaft position
(2 driving cycle detection logic)
control (VVT) actuator)
• Oil control valve circuit
•ECM
DTC Confirmation Procedure
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and tester, on a level road.
NOTE:
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)