Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    How to proceed with troubleshooting
    Hint: carry out troubleshooting in accordance with the procedures on the following page. Here, only the basic procedures are shown. Details are provided in the diagnostics section, showing the most effective methods for each circuit. Confirm the troubleshooting procedures first for the releva ...

    Circuit description
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    Dialing
    1 Display the phone screen. 2 Select the “Dial Pad” tab and enter a phone number. To delete the input phone number, select . For the first digit, you can enter “+” by selecting “*” for a while. 3 Press the switch on the steering wheel or select . ...