Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    Making a phone call
    To enter the “PHONE” mode, press the off-hook switch. ■ Making a phone call ● Dialing by selecting a name ● Speed dialing ● Dialing by entering the number ● Dialing from call histories ■ Receiving a phone call ● Answering the phone ● Refusi ...

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    It is possible to customize the language and Eco Driving Indicator Light settings using the “DISP” switch. When customizing vehicle features, ensure that the vehicle is parked in a safe place with the shift the shift lever to P (continuously variable transmission) or N (manual transmissio ...

    Engine
    On–vehicle inspection Hint: inspect these items on a cooled down engine. 1. Inspect drive belt 2. Replace spark plugs 3. Inspect air filter Remove the air filter.  visually check that the air filter is not excessively damaged, dirty or oily. Peplace the air filter if nece ...