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7.2.1. Introduction


Places of installation of units of system of decrease in toxicity on the 4-cylinder engine

1. Diagnostic socket
2. The vacuum distributor operating
recirculation valve
3. Recirculation valve
4. The sensor of absolute pressure in the soaking-up collector
5. Sensor of turn of a butterfly valve
6. Liquid temperature sensor
7. Block of coils of ignition
8. Oxygen sensor

Arrangement of devices of systems of decrease in toxicity on the 6-cylinder engine

1. Diagnostic socket
2. Recirculation valve
3. Perepuskna air valve
idling
4. Sensor of turn of a butterfly valve
5. Stream speed sensor
6. Ignition block
7. Oxygen sensor
8. Blocks of coils of ignition
9. Liquid temperature sensor

The considered cars are equipped with several systems of decrease in toxicity of exhaust gases. Treat them:

  – onboard system of diagnostics (OBD system);
  – control system of the engine (EFI system);
  – system of recirculation (EGR system);
  – system of catching of vapors of gasoline (EVAP system);
  – system of compulsory ventilation of a case (PCV system);
  – system of the choice of the channel of absorption (ACIS system);
  – catalytic converter.
The concrete type of the applied systems with the indication of adjusting data is specified on podkapotny plates (VECI plate).

The plate with the indication of distributing of vacuum hoses