The electric starter (also called the starter) is an important component used to start the engine in mechanical equipment such as automobiles. Detecting the status of the electric starter is a key step to ensure its normal operation. The following are some common electric starter detection methods:

1. Appearance inspection
Check the battery: Check whether the battery terminal is loose or oxidized, ensure that the battery is fully charged, and the battery connection is normal.
Check the connection wire: Check whether the connection wire between the starter and the battery is firm, not disconnected or loose.
2. Voltage detection
Detect the voltage after starting the ignition lock:
Connect the power of the whole vehicle and turn on the ignition lock.
Detect the voltage between the relevant terminals. The specific steps and judgment criteria may vary depending on the vehicle model and starter model but usually include detecting the voltage after starting the ignition lock and measuring the voltage between different terminals.
If there is no voltage, check whether the corresponding circuit or component has a circuit break or fault.
If there is voltage but it is lower than the normal value, it may be that the voltage drop of the relevant component is too large or there is other fault.
If the voltage is higher than the normal value, continue to detect it according to the subsequent steps.
Detect the voltage between the two terminals:
If there is voltage and it is higher than a certain value (such as 25.4V), it means that the contact cannot be connected and the starter needs to be replaced.
If there is no voltage, it means that the contact has been connected. At this time, check whether the connection line between the starter and the battery is disconnected or loose and whether the grounding wire is firm. If there is a problem, perform corresponding repairs; otherwise, the problem may be inside the starter and the starter needs to be replaced.
3. Performance test
Directly test the performance of the starter:
Connect the starter to the positive and negative batteries and the ground wire of the car.
Use the live wire to connect to the spark plug coil.
Observe the operation of the starter.
If the starter can run smoothly and there is no abnormal noise, smoke, or burning, it usually means that the starter is in good working condition.
If there is an abnormal phenomenon, such as noise, smoke or burning, it may be a signal that the starter itself is damaged and should be replaced in time.
Check the commutator, contacts, and contact plate:
If the surface of the commutator is ablated, it can be polished with sandpaper. If the out-of-roundness exceeds a certain value (such as 0.05mm), it should be processed on a lathe to make it round.
If the contact and contact plate surfaces are slightly burned, they can be polished with sandpaper. If the burn is serious, the relevant parts need to be replaced.
IV. Precautions
When testing the electric starter, make sure that the power supply is disconnected to avoid the risk of electric shock.
During the test, the relevant data should be carefully observed and recorded for subsequent analysis and judgment.
If the electric starter is found to be faulty or damaged, it should be replaced or repaired in time to ensure the normal operation of the equipment.
In summary, the detection methods of the electric starter include appearance inspection, voltage detection, performance detection, and precautions. By using these methods in combination, the status of the electric starter can be accurately judged, and corresponding repair or replacement measures can be taken.