2.6.4. The general instructions on self-diagnostics of system of injection
The block of management of the engine is equipped by self-diagnostics function. Before repair, and also for search of malfunctions first of all it is necessary to interrogate memory of malfunctions. It is necessary to check also vacuum hoses and connections (подсос air through thinnesses).
Hoses топливоподачи in a motor compartment are necessary for fixing only spring collars. Application of tightening or screw collars is inadmissible.
For excellent job of electric knots pressure not less is necessary than 11,5 Century
Do not use силиконосодержащие hermetics. Traces of silicone components soaked up by the engine do not burn down in the engine and damage a ljambda-probe.
Cars are equipped by the device of a stopping delivery of fuel at failure. It should reduce danger of fire of the car after blow thanks to that the fuel pump is disconnected by means of the relay of the fuel pump.
Simultaneously by means of this device improvement of parametres of process of start-up of the engine is reached also. At opening of a door of the driver the fuel pump is started on 2 with for pressure creation in fuel system, thus it is necessary to observe security measures.
Before opening of system of injection of a high pressure it is necessary to adhere to a following operations procedure necessarily
From safety reasons before opening of fuel system if АКБ
it is not disconnected, it is necessary to take out a safety lock 28 blocks of management of the fuel pump as the fuel pump joins by means of the door switch of illumination of a door of the driver (fig. 2.227
The safety lock is in колодке safety locks on the instrument panel.
By removal of a safety lock 28 power supplies of the plug 30 for the block of management of the fuel pump stop.
The injection system is divided into a high pressure contour (a maximum nearby 110 bar) and a contour of low pressure (nearby 6 bar).
Before opening of a contour of a high pressure, for example, for removal of the pump of a high pressure, a fuel stage, an atomizer, a fuel highway or the gauge of pressure of fuel, it is necessary to lower pressure of fuel to residual pressure прибл. 6 bar. The operations procedure is for this purpose described more low.