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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volkswagen Golf IV (1997 release)

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Volkswagen Golf 4
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Golf 4
Instructions
Engine
Cooling system
Fuel System
Cars with petrol engines
Removal and installation of the fuel pump / fuel level sensor
Removal and installation of the fuel filter (petrol engines)
Adjusting accelerator cable
Removing and installing air cleaner housing
Remote check of elements of fuel system
Checking the fuel pump
Checking the fuel pump relay
The engine management system
Technical data
Employment engine management system
Checking the fuel injection system
Sensors and actuators, engine control
Fuel
Ignition system
Direct Ignition
Spark plug
Removal and installation of a fuel highway and atomizers
The basic malfunctions of the engine management system
Cars with diesel engines
Exhaust system
Ventilation and heating system
Coupling
Transmission
Suspension brackets and power shafts
Steering
Wheels and tires
Brakes
Body
Electrical equipment and wiring
 


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Ignition system



Ignition system creates in each cylinder of the engine at a certain moment the spark that ignites the compressed fuel mixture. For the formation of a spark in the ignition coil voltage of the battery 12 is converted into a high voltage ignition 25 000-30 000 V.

To determine the ignition timing control unit uses the information stored in the memory and information from the sensors installed on the engine. Control signals from the ignition system gets a Hall sensor or encoder. Additionally, the ignition timing is corrected also on the knock sensor signal, which is susceptible to premature ignition and thus reduces the ignition timing.
A warning

At work on the ignition system, so as not to damage the semiconductor devices (diodes and transistors), you must meet the following requirements:

- During operation of the engine, do not disconnect the battery, generator or any electric sockets;
- When carrying out any works remove the negative plug from the accumulator;
- When carrying out electric welding on the vehicle, disconnect the generator and control unit;
- Do not operate the engine disconnected from the electrical system generator.

Do not touch the high-voltage wires by hand and do not remove them when the engine is running or cranking the engine a starter.

Cables and wires, ignition system instrumentation disconnect only when the ignition is switched off.

Sink engine produces only when the ignition is off.






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