Sonata GL V6-3.0L (1997)
Main Relay (Computer/Fuel System): Description and Operation
MFI CONTROL RELAY
When the ignition switch is turned on, battery voltage is applied from the ignition switch to the ECM, turning ON the ignition power transistor and
energizing the MFI control relay coil. This turns ON the MFI control relay switch, and supplies power from the battery to the ECM through the
MFI control relay switch.
