![]() ![]() Check valve timing (check for loose and jumped teeth on timing chain).Drive the vehicle for more than 10 minutes.Switch the ecm from normal mode to check mode using.Check whether dtc output recurs (dtc p0011 or p0012).Check the engine speed while operating the oil control.On the tester, select the following menu items:ĭiagnosis / enhanced obd ii / active test /.Start the engine and turn the tester on.Perform active test using intelligent tester (operate ocv).Select the following menu items: diagnosis /Įnhanced obd ii / dtc info / current codes.Turn the ignition switch on and turn the tester on.Connect the intelligent tester to the dlc3.Check any other dtcs output (in addition to dtc p0011 or p0012).Moving or stationary, if the engine was warmed up or not, if the air-fuel ratioĭata from the time the malfunction occurred. When troubleshooting, freeze frame data can help ![]() Read freeze frame data using the intelligent tester. If dtc p0011 or p0012 is present, check the vvt (variable valve timing) The dtc will remain set even if the system returns to normal after aįoreign objects are filtered out by the oil filter. Then, the ecm monitors the camshaft timing change for 5 seconds.ĭtc p0011 or p0012 may be set when foreign objects in the engine oil are If the difference between the target and actual camshaft timings is greater The vehicle has been driven at more than 64 km/h (40 mph) for 3 minutes.The engine is warm (the engine coolant temperature is 75°c or.The monitor will run if all of the following conditions are met: These dtcs indicate that the vvt controller cannot operate properly due to ocv After above conditions 1 and 2 are met, the ocv is forcibly activated 63ĭtc p0011 (advanced cam timing) is subject to 1 trip detection logic.ĭtc p0012 (retarded cam timing) is subject to 2 trip detection logic.It takes 5 seconds or more to change the valve timing by 5°ca.The difference between the target and actual intake valve timing is moreĪngle) and the condition continues for more than 4.5 Seconds.Intake valve timing are small, the ecm interprets this as the vvt controllerĪ dtc is set when the following conditions 1, 2 and 3 are met: If the difference between the target and actual intake valve timings is large, The ecm sends a target duty-cycle control signal to the ocv. The vvt system includes the ecm, the oil control valve (ocv) The ecm optimizes the intake valve timing using the vvt (variable valve Intake valve timing is verified by the ecm. The ecm detects the actual intakeįrom the camshaft and crankshaft position sensors, and performs feedback As a result, the relative positions ofĬrankshaft are optimized, the engine torque and fuel economy improve, and theĭecrease under overall driving conditions. The vvt controllerĪngle using oil pressure through the ocv. Theīased on the signals transmitted by several sensors. Intake air volume, throttle valve position and engine coolant temperature. Camshaft timing control is performed according to engine operating This control signal regulates the oilĬontroller. The vvt system includes the ecm, oil control valve (ocv) and vvt controller.ĭuty-cycle control signal to the ocv. Position "a" - timing over-retarded (bank 1) "a" - timing over-advanced or system performance (bank 1) Toyota RAV4 Service Manual / 2Az-fe engine mechanical / Sfi system / Diagnostic trouble code chart / Camshaft position "A" ![]()
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