Toyota Corolla (E170): Have the malfunction repaired immediately. (vehicles with a smart key system)

After taking the specified steps to correct the suspected problem, check that the warning message and light go off.

■Warning buzzer

■Warning buzzer

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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 ...

    Hood
    Adjustment Hint: since the centering bolt is used as a hood hinge and hood lock set bolt, the hood and hood lock can not be adjusted with it on. Substitute a bolt with washer for the centering bolt. 1. Inspect hood sub–assy Check that the clearance is within the standard value. ...

    Correct driving posture
    1 Adjust the angle of the seatback so that you are sitting straight up and so that you do not have to lean forward to steer. 2 Adjust the seat so that you can depress the pedals fully and so that your arms bend slightly at the elbow when gripping the steering wheel. 3 Lock the head restraint ...