Toyota Corolla (E120): Components

Replacement

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    How to proceed with troubleshooting
    1 Vehicle brought in 2 Customer problem analysis check and symptom check 3 Problem symptoms table Without applicable symptoms, proceed to ”a”  with applicable symptoms, proceed to ”b” 4 Perform troubleshooting in the following method, depending on malfunction symptom ...

    Inspection procedure
    1 Check operation(overdrive) Drive the vehicle after the engine warms up.  check that overdrive on e off occurs by an operation of the o/d switch on–off. 2 Inspect terminal voltage(od) Remove the cruise control ecu assy with the connector still connected.  tur ...

    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 ...