Main Relay (Computer/Fuel System): Description and Operation

Fig. 4 ECCS (Main MFI) Relay And ECCS Control Unit (ECM) Location:

The ECCS/EFI relay, located on the ECCS control unit behind the center console, supplies voltage to the ECM. When the ignition key is in the ON or START position, battery voltage is supplied to the relay. This closes the relay allowing battery voltage to to supplied to the ECM.