This winding consists of several turns of thick wire. Under the influence of electric current around the iron core in the ignition coil, a powerful magnetic field is created - the energy supplied to the system for ignition.
Under the trim on the side at the feet of the front passenger in models with a 5-cylinder engine is the control unit (4) fully electronic ignition system (VEZ). It also has a height sensor (3), control unit KE-III-Jetronic (1), as well as the automatic transmission control unit (2). More on this in the chapter «Body electrical system».
If the piston approaches the point at which the incoming and compressed mixture should ignite - the moment of ignition - the current in the ignition coil is interrupted. This happens at the command of the control unit.
When the current is turned off, the magnetic field in the ignition coil is interrupted. In this case, the following happens: in the secondary winding, consisting of a very large number of turns of thin wire, a high-voltage current pulse of several tens of thousands of volts occurs.
This secondary voltage of the ignition system is supplied through the distributor (for models with a 6-cylinder engine directly) on that spark plug, the sequence of which came up in the order of operation of the engine cylinders. The mixture ignites and the engine cranks further. The circuit closes, the process repeats.
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