Toyota Corolla (E120): Circuit description

This is the power source of the ecu, hence the actuators.

Wiring diagram

Wiring diagram

Inspection procedure

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    Sound quality is bad only when cd is played(volume is too low)
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    Air conditioning filter
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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 . ...