When the ignition key is turned to the START position, power is supplied to the starter traction relay, which switches the battery directly to the starter motor. The motor begins to rotate, simultaneously turning the flywheel/drive disk ring gear and, accordingly, the engine crankshaft.
On models with automatic transmission, a starter enable switch sensor is included in the starter operation control circuit, preventing the possibility of starting the engine in transmission positions other than "P" and "N". On models with manual transmission, starting the engine becomes possible only when the clutch is depressed, which is controlled by the starter circuit open switch sensor.
When performing any service on the components of the starting system, the following special precautions must be observed:
- a) Remember that excessively long cranking of the engine with the starter can cause serious damage to the electric motor of the latter due to overheating. Never use the starter continuously for more than 15 seconds, after which it should be allowed to cool for one to two minutes;
- b) Do not forget that the starter is connected directly to the battery, which, if handled carelessly, as a result of overloads and short circuits, makes it possible for arcing to occur, which in turn can lead to ignition of the wiring;
- c) When performing any work on the components of the starting system, it is imperative to disconnect the negative cable from the battery - remember that if the stereo system installed in the car is equipped with a security code, before disconnecting the battery you should make sure you know the correct combination to activate the audio system!