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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    Malfunction in water temperature receiver gauge
    Wiring diagram Inspection procedure 1 Read value of hand–held tester Check output value of ecm.  Connect the hand–held tester to dlc3.  Turn the ignition switch to on and push the hand–held tester main switch on.  Select the data list mode on the hand–he ...

    Circuit description
    A thermistor is built in the engine coolant temperature sensor and changes the resistance value according to the engine coolant temperature. The structure of the sensor and connection to the ecm is the same as those of the intake air temperature sensor. Hint: if the ecm detects the dtc ...

    Changing audio source
    1 Press the “AUDIO” button to display the audio source selection screen. If the audio source selection screen is not displayed, press the “AUDIO” button again. 2 Select the desired audio source. 1 Select the desired audio source then or to reorder. ...