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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    Maintenance data (fuel, oil level, etc.)
    Dimensions and weight *1:Unladen vehicles *2:Vehicles without 18-inch tires *3:Vehicles with 18-inch tires for Guam and Saipan *4:Vehicles with 18-inch tires except for Guam and Saipan *5:For Guam and Saipan Seating capacity Vehicle identification ■ Vehicle identification number The vehicle iden ...

    Location of the storage features
    Bottle holders/door pockets Open trays (if equipped) Glove box Cup holders (if equipped) Console box WARNING ■Items that should not be left in the storage spaces Do not leave glasses, spray cans in the storage spaces, as this may cause the following when cabin temperature becomes high: ...

    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 ...