Schematic representation of a diesel fuel injection system

Schematic representation of the diesel fuel injection system: 1 - Control device (EDC); installation point: in the engine compartment, on the right wing; 2 - Air conditioner switch; 3 - Clutch of the air conditioner compressor; 4 - Air conditioner relay; 5 - Crankshaft speed sensor; 6 - Exhaust gas recirculation valve (EGR); 7 - Exhaust gas catalyst; 8 - Ignition switch; 9 - Turbocharger; 10 - Battery; 11 - Air flow meter; 12 - Air filter; 13 - Vacuum converter (CVT valve); 13a - Vacuum pump; 14 - Fuel tank; 15 - Fuel tank heating element; 16 - Fuel filter; 17 - High pressure fuel pump; 17a - Magnetic shut-off valve; 18 - Jet; 19 - Diagnostic plug; 20 - Plug for autotesting; 21 - Fuel lever position sensor; 22 - Partial load solenoid valve; 23 - Magnetic switch for cold operation; 24 - Relay for cold operation; 25 - Coolant temperature sensor; 26 - Supply air cooler