The main relay EFI of electronic system of injection of fuel (EFI — Electronic Fuel Injection) submits pressure to the fuel pump. The relay copes on two electric chains. On the first chain management is carried out from the engine management block (PCM), and on the second — from the ignition lock. If after ignition inclusion engine start is not carried out, PCM will disconnect the relay of the fuel pump through 2 with. Further, at engine start, after the first impulse from the gauge of position of a camshaft of the relay includes the fuel pump.
Atomizers open on signals PCM individually in sequence of an operating procedure of cylinders. PCM operates time of opening of atomizers (duration of an impulse) which defines quantity of the fuel submitted to cylinders of the engine.
The switchboard on models with 1996 for 1998 will transform operating impulses PCM to current impulses in a primary winding of the coil of ignition. PCM uses signals from various gauges to calculate demanded installation of an advancing of ignition and time of accumulation of energy in the ignition coil.
The valve of a control system of frequency of rotation of idling (IAC — Idle Air Control) operates quantity of air arriving in cylinders of the engine on frequency of rotation of idling.
The vacuum valve (VSV) monitoring systems of allocation of steams of fuel (EVAP) – the electromagnetic valve operated PCM for clearing of the fuel coal filter and giving of steams of fuel to an inlet collector for their burning. This valve also name the regulating valve of clearing.