Dual Relay

The dual relay is composed of 2 relays which control current supply for entire electronic fuel injection system and which disengages system (electrically) from battery when ignition is turned to off position.

When ignition switch is on, the main relay points close, providing voltage to the ECU and pre-resistors (if used) of the electronic fuel injection system. The other relay within the dual relay, controls current to the electric fuel pump. These points close during cranking and when points of airflow valve are closed. This design is to cut-off current to fuel pump in the event that engine stops (airflow meter closed).