Circuit open: 1 - ignition switch; 2 - electromagnetic starting nozzle; 3 - thermal time relay; 4 - relay for turning on the fuel pump; 5 - fuel electric pump; 6 - control pressure regulator; 7 - valve for additional air supply.
Starting a cold engine. Voltage is applied to the starting injector and the thermal time relay. engine running (voltage is supplied from the output «1» ignition coils). The fuel pump relay, the electric fuel pump, the auxiliary air supply valve and the control pressure regulator are turned on.
Ignition on, engine running. The fuel pump enable relay, electric fuel pump, auxiliary air supply valve and control pressure regulator are turned on
Ignition on, engine not running. Output voltage «1» ignition coil is not supplied. The fuel pump enable relay, electric fuel pump, auxiliary air supply valve and control pressure regulator are de-energized
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