On-board DC vehicle network with rated voltage of 12 V

The electrical equipment is made according to a single-wire scheme: the negative terminals of the sources and consumers of electricity are connected to the "mass" - the body and power unit of the car, which perform the function of the second wire.

The scheme is divided into two parts. Each scheme corresponds to the numbering of the parts included in the scheme.

Engine diagram with mechanical throttle valve of Nissan Almera car

1 - generator; 2 - air conditioner compressor; Z - cooling system fan; 4 - additional resistor; 5 - starter; 6 - battery; 7 - absolute air pressure sensor; 9 - coolant temperature sensor; 10 - crankshaft position sensor; 11 - intake air temperature sensor; 12 - adsorber purge valve; 13 - oxygen concentration control sensor; 14 - connection block with wiring harness of oxygen concentration control sensor; 15 - diagnostic oxygen concentration sensor; 16 - connection block with wiring harness of diagnostic oxygen concentration sensor; 17 - ignition coils;

Continuation of the wiring diagram of the motor with a mechanically driven damper

Engine diagram with mechanical throttle valve of Nissan Almera car

18 - spark plugs; 19 - injectors; 20 - throttle position sensor; 21 - idling regulator; 22 - detonation sensor; 23 - refrigerant pressure sensor; 24 - pressure sensor in the power steering system; 25- insufficient oil pressure sensor; 26 - reverse light switch; 28 - electronic engine control unit (controller); 29 - fuse box and relay in the engine compartment; 30 - high speed relay of the cooling system fan; 31 - low speed relay of the cooling system fan; 32 - air conditioner compressor relay; 33 - fuel pump relay and ignition coils; 34 - main relay; 35, 36 - fuses in the relay block and fuses in the engine compartment; 37- connection block with the body wiring harness

The diagram of the rear part of the body wiring harness is located in the article - Wiring diagram of the rear wiring harness of the Nissan Almera car body