Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Circuit description
    When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

    Switches
    Instrument panel light control dial Automatic High Beam switch Heated steering wheel switch* Windshield wiper de-icer switch* Outside rear view mirror switch Door lock switches Power window switches Window lock switch *: If equipped Meter control switches Paddle shift switches*1 C ...

    Engine oil
    With the engine at operating temperature and turned off, check the oil level on the dipstick. ■ Checking the engine oil 1 Park the vehicle on level ground. After warming up the engine and turning it off, wait more than 5 minutes for the oil to drain back into the bottom of the engine. 2 ...