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

Description
The main relay actually contains two individual relays.
This relay is installed behind the passengers seat back panel.
One relay is energized whenever the ignition is on which supplies the battery voltage to the ECU, power to the injectors, and power for the second relay.
The second relay is energized for 2 seconds when the ignition is switched on, and when the engine is running which supplies power to the fuel pump.