VOLKSWAGEN GOLF IV

since 1997 of release

Repair and car operation



Foltsvagen Golf 4
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Cooling system
- 4. Fuel system
   + 4.1. Cars with petrol engines
   - 4.2. Cars with diesel engines
      4.2.1. Direct injection of fuel
      4.2.2. Fuel tank
      4.2.3. Specifications
      4.2.4. Check of system of preliminary heating of the diesel engine
      4.2.5. Check of candles of an incandescence
      4.2.6. Removal and installation of candles of an incandescence
      4.2.7. System of heating of fuel
      + 4.2.8. Fuel nozzles
      4.2.9. Moment of injection of the fuel pump of a high pressure
      4.2.10. Main malfunctions of a control system of the engine
+ 5. Exhaust system
+ 6. Ventilation and heating system
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment and electroschemes




4.2.4. Check of system of preliminary heating of the diesel engine

GENERAL INFORMATION

Arrangement of elements of management of the diesel engine in a motor compartment of the car with the diesel TDI engine

1–the valve for a retsirkulyatsiya of the fulfilled gases;
2–the switching valve of an inlet collector;
3–a fuel nozzle with the needle motion sensor;
4–control unit. For the diesel engine with system of direct injection. The sensor of height is integrated in the control unit;
5–the management valve for a retsirkulyatsiya of exhaust gases;
6–magnetic valve. For restriction of pressure of pressurization;
7–air flowmeter;
8–the sensor of temperature of cooling liquid;
9–sensor of turns of the engine;
  10-the electric socket for the needle motion sensor;
11-the electric socket for the sensor of turns of the engine;
12-electric socket of the fuel pump of a high pressure (TNVD). For the sensor of temperature of fuel, a regulator of volumes and the sensor of traffic control of a needle;
13-the valve to start injection;
14-the disconnecting fuel valve;
15-post of measurement of volume of the fuel pump of a high pressure. With the sensor of temperature of fuel a regulator of volumes and the sensor of traffic control of a needle;
16-the sensor of absolute pressure in an inlet collector with the temperature sensor

The following elements are not shown in drawing:

 – And – the switch of a pedal of a brake;
 – In – the stoplight switch;
 – With – the sensor of provision of a pedal of an accelerator;
 – D–switch of a pedal of coupling.

Check conditions

Tension of an onboard network of the car should be not lower than 11,5 Century.

The control unit the engine should be in a normal state.

Safety locks in a chain of giving of tension to glow plugs should be serviceable.

Check

PERFORMANCE ORDER
1. Switch off ignition.
2. Disconnect the electric socket from the sensor of temperature of cooling liquid (And – the sensor of temperature of cooling liquid, 1, 3 – contacts of the electric socket).
3. In this condition the control system of the engine considers that the engine cold and at inclusion of ignition will occur preliminary warming up of the diesel engine.
4. Disconnect electric sockets from incandescence candles.
5. Turn on the voltmeter between one of sockets of candles of an incandescence and mass of the car.
6. Include ignition. Thus the voltmeter should show that within 20 seconds tension to glow plugs moves.
7. Otherwise check an electric power-supply circuit of candles of an incandescence, find and eliminate malfunction.