Toyota Corolla (E120): Readiness monitor drive pattern

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Circuit description
A thermistor is built in the engine coolant temperature sensor and changes the resistance value according to the engine coolant temperature. The structure of the sensor and connection to the ecm is the same as those of the intake air temperature sensor. Hint: if the ecm detects the dtc ...

Basic inspection
Resistance measuring condition of electronic parts  unless stated, all resistance is measured at an ambient temperature of 20 c (68 °F). As the resistance may be outside the specifications if measured at high temperatures immediately after the vehicle has been running, measu ...

Circuit description
The vapor pressure sensor, vsv for canister closed valve (ccv), vsv for pressure switching valve are used to detect abnormalities in the evaporative emission control system. The ecm decides whether there is an abnormality in the evaporative emission control system based on the vapor pressur ...