Toyota Corolla (E120): Problem symptoms table

If a normal code is displayed during the dtc check but the problem still occurs, check the circuits for each problem, symptom in the order given in the table below and proceed to the relevant troubleshooting page.

Actuator motor circuit

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    Inspection procedure
    Hand–held tester: 1 Perform active test by hand–held tester(operation of circuit opening relay) Connect the hand–held tester to the dlc3.  turn the ignition switch on and push the hand–held tester main switch on.  select the item ”diagnosis / enhanced obd ii / active ...

    Replacement
    Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove seat track upper rail cover rh 4. Remove seat track upper rail cover lh 5. Remove front seat assy lh 6. Remove seat position air bag sensor Disconnect the connector of the seat position airbag sensor. ...

    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 ...