How do resistors on a circuit measure resistance?
The principle of the measurement results were tested, such as the resistance you see is 1K, if the measured value is less than 1K is normal.
If it is greater than 1K, it means that the resistor may have been broken. Of course, if the resistance is 0, then you should check to see if there is anything else that will affect the measurement. If not explained, the resistor is short circuited.
This should be a general understanding of the circuit's access to the resistor, such as whether the two points of the resistor are inductance, diode, short circuited, and so on, which can affect the measurement of resistance.
