Toyota Corolla (E120): Circuit description

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: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    Circuit description
    This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the signal from the ecu. If a malfunction occurs in the actuator or speed sensor, etc. During cruise control operation, the rotor shaft between the motor and control plate is released. ...

    Fuel consumption information
    Fuel consumption information can be displayed on the audio system screen. System components Audio system screen Consumption ■ Trip information 1. Select on the main menu. 2. Select "Trip information". If a screen other than "Current" is displayed, select "Current". The image is an example ...

    Circuit description
    The intake air temperature (iat) sensor, mounted on the mass air flow (maf) sensor, monitors the intake air temperature. The iat sensor has a thermistor that varies its resistance depending on the temperature of the intake air. When the air temperature is low, the resistance in the thermisto ...