Toyota Corolla (E120): Evaporative emission control system

Dtc p0441 evaporative emission control system incorrect purge flow

Dtc p0446 evaporative emission control system vent control circuit

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Vehicle control system
Ignition or starter switch assy Replacement 1. Remove steering column cover 2. Remove ignition or starter switch assy Disconnect the ignition switch connector and unlock warning switch connector.  remove the 2 clamps.  remove the 2 screws and ignition switch. Inspectio ...

Circuit description
The vehicle speed sensor circuit is sent to cruise control ecu assy as a vehicle speed signal. For each rotation of the shaft, the vehicle speed sensor sends a signal through the combination meter assembly to the cruise control ecu assy (see the following chart). The cruise control ecu assy ...

Fuel information
You must only use unleaded gasoline in your vehicle. Select octane rating 87 (Research Octane Number 91) or higher. Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking. Persistent knocking can lead to engine damage. At minimum, the gasoline you use should ...