Protege L4-1839cc 1.8L SOHC (1992)
Main Relay (Computer/Fuel System): Description and Operation
The Main Relay (also referred to as Fuel Injection Relay), located in a relay panel mounted forward of the left strut tower, supplies power to the ECU
and a number of ECU controlled devices when the ignition is switched "ON", including the circuit opening relay, distributor, fuel injectors and a variety
of solenoid valves.
The ECU energizes these devices when needed by completing the circuit to ground.
