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
    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 ...

    Using an anchor bracket (for top tether strap) (except for Puerto Rico)
    ■ Anchor brackets (for top tether strap) Anchor brackets are provided for each rear seat. Use anchor brackets when fixing the top tether strap. Anchor brackets Top tether strap ■ Fixing the top tether strap to the anchor bracket Install the child restraint system in accordance to the opera ...

    Trip information
    ■ Switching the display Items displayed can be switched by pressing the “DISP” switch. ■ Odometer Displays the total distance the vehicle has been driven. Except vehicles with a manual transmission: Press and hold the “DISP” switch to change the display to the Eco Driving ...