Toyota Corolla (E120): 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 supplying power to terminal +b of the ecm.

If the ignition switch is turned off, the ecm continues to switch on the efi relay for a maximum of 2 seconds for the initial setting of the isc valve.

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    Floor shift cable transmission control shift
    Replacement Hint: components: 1. Remove air conditioner unit assy Hint: refer to the instructions for removal of the air conditioner unit assy. 2. Separate air bag sensor assy center  remove the 3 bolts, separate the airbag sensor assy center. 3. Remove exhaust pipe assy 4. Remo ...

    Initialization
    Select “Initialize” using . ● Initializing the sound settings Select “Sound setting” using and press (YES). For details about sound settings: ● Initializing the device information Select “Car Device Info” using and press (YES). Automatic connection of a portable ...

    Replacement
    1. Remove clutch start switch assy  disconnect the clutch start switch assy connector.  remove the nut and clutch start switch assy from the clutch pedal support. 2. Install clutch start switch assy  install the clutch start switch assy with the nut. Torque: 15.68 Nv ...