Toyota Corolla (E120): Components

Overhaul

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    Circuit description
    When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

    Circuit description
    The ecm compares the two waveforms of the heated oxygen sensors located before and after the catalyst to determine whether or not the catalyst performance has deteriorated. Air–fuel ratio feedback compensation keeps the waveform of the heated oxygen sensor in front of the catalyst alterna ...

    Automatic transaxle fluid (atm)
    On–vehicle inspection 1. Check the fluid level Hint: drive the vehicle so that the engine and transaxle are at normal operating temperature. Fluid temperature: 70 – 80 °c (158 – 176 °f)  park the vehicle on a level surface and set the parking brake.  with the engin ...