How can I check the shot generator?
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The generator is one of the most important elements of the car,he is responsible for the correct operation of all nodes that need electricity. Of course, if there are problems with power in the car, the first "culprit" is the generator. That's why it's important to be able to test it yourself. Let's figure out how to test the generator using a tester (multimeter).
Checking the elements of the generator
The generator has 4 main constituent elements,the efficiency of which gives a complete picture of the functioning of the generator. If one of the elements is faulty, then the generator can not work correctly. Thus, to check the generator, you need to check each of the elements.
- We turn on the multimeter in the DC voltage measurement mode.
- We start the car.
- At the terminals of the battery we measure the voltage value - the value should fluctuate in the range 14 - 14.2 V (otherwise the relay is malfunctioning).
- Push on the accelerator, watch the voltage - it should increase by 0, 5 V (otherwise - the relay is malfunctioning).
- Turn on the multimeter sound mode.
- "Call" each diode (all of them in bridge 6) in both directions.
- If all the diodes "ring" only in one direction, they are in good order, otherwise they are not.
The stator of the generator
- Disconnect the diode bridge from the stator.
- We inspect the winding - no deposits and damage should not be.
- Switch the multimeter to the resistance measurement mode.
- We measure the resistance value between the stator housing and the winding.
- If the value is much greater than 50 kΩ, the stator is OK, if the value is close to 50 kΩ, it will soon fail, less than 50 kΩ, is defective.
Rotor of the generator
- We pull out the rotor and inspect for visible damage.
- We check the integrity of the winding.
- We measure the resistance between the contact rings.
- If the resistance value is equal to several Ohms, - the rotor is corrected, if the device shows zero or infinity, - no.
That's all the checks that need to be done with the generator. If all checks have shown that the generator is working correctly, then you need to look for the problem further.