Electrical Relays

The main relay, diode unit, and fuel pump relay are located on the firewall next to the battery. When ignition is turned on, the main relay is activate. This connects the battery circuit to the ballast resistors and injectors. The main relay also allows current to flow to the control unit and the fuel pump switch on the air flow meter.

Relays are located in engine compartment, near battery. When engine is cranked for starting, the diode unit is activated. This energizes the auxiliary air valve, cold start system, and fuel pump.