Opel Astra, Zafira

Since 1998 of release

Repair and car operation



Opel Astra
+ Cars Opel Astra and Zafira
+ The operation manual
+ Routine maintenance
+ The engine
+ Systems of cooling, heating
- The power supply system and release
   + The power supply system
   - System of injection of fuel of petrol engines
      Principle of functioning of systems of injection of fuel
      Check of serviceability of functioning of system of injection of fuel
      Removal and installation of components of system of the central injection of fuel Multec
      Removal and installation of components of systems of the distributed injection of fuel Multec-S and Simtec-70
      The monitoring system of temperature of soaked up air (model with the central injection) - a principle of functioning and check of serviceability of functioning
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
   + Systems of injection and turbo-supercharging of the diesel engine
   + Systems of release and decrease in toxicity of the fulfilled gases
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



System of injection of fuel of petrol engines

The general information and safety measures

The general information

The electronic control system of the engine regulates quantity of fuel submitted to cylinders and exercises administration of ignition process. On petrol engines various control systems (the Principle of functioning of systems of injection of fuel see) are applied.

The electronic control system of the engine provides following possibilities:

  1. Exact dosage of fuel in any mode of operation that provides the small expense of fuel at high capacity.
  2. Reduction of the maintenance of harmful substances in the fulfilled gases thanks to exact dispensing of fuel and application каталитического the converter.
  3. Self-diagnostics of a control system by the engine provides possibility of fast troubleshooting. One of the major elements of a control system of the engine is the self-diagnostics subsystem. If during operation refusal of functioning any of system elements comes to light, in memory of processor ECM the corresponding code of malfunction is brought. Reading and identification of codes stored in memory (the engine Electric equipment see the Head) allows to reveal and eliminate a cause of a failure quickly.

The engine management block (ECM) plays a role of the brain centre and is equipped by the high-speed microprocessor. On the basis of the analysis of data ECM continuously arriving from information gauges defines the optimum moment of injection and necessary volume of injected fuel. The information processed by modules of management of transmission and иммобилизатора of the engine is thus considered also.

Elements of a control system of the engine keeps high working capacity for a long time and practically does not demand service. Only such elements of system require regular replacements during carrying out of maintenance service of the car, as the air filter and spark plugs. Serious works on adjustment and repair demand application of difficult diagnostic devices in view of what their performance should be entrusted to experts of a car repair shop.

Adjustment of number of turns of idling and concentration монооксида carbon (WITH) within the limits of maintenance service carrying out is not required.

Security measures at work with a control system of the petrol engine

Remember that fuel in a power supply system path at the working engine and the included ignition is under pressure. Residual superfluous pressure continues to be kept in system during even some time after deenergizing of ignition and before a detachment of components / undocking штуцерных sockets should be dumped!

Do not touch to ВВ to electroconducting of system of ignition at the working engine / a starter and do not make its detachment.

Persons with the implanted warm stimulator should not be supposed to service of elements of system of ignition at all! Connection and switching-off of measuring devices also should be made at the switched off ignition.

The detachment топливопроводов should be made at the switched off ignition.

At check компрессионного pressure in power supply system and ignition cylinders should be disconnected (the corresponding Section of the Head the Engine) see

The list of security measures see also – the Power supply system see.

Remarks on checks of a control system by the engine

By search of causes of failures, first of all, it is necessary to deduce diagnostic codes from memory of the processor, and also to check up tightness of connection of vacuum lines.

For reliable functioning of all electric elements of system pressure presence not below 11.5 Century is necessary

If after end of search and elimination of causes of failures the engine after start at once глохнет, can serve as the reason of such phenomenon blocking of anticreeping system, - interrogate memory of the processor, in case of need make adjustment of the corresponding knot of management.