If the load cell is connected to a multichannel weight transmitter or an intelligent junction box with built-in diagnostics, the malfunction of the load cell is signaled directly by the instrument (read also How to check if a load cell is working correctly - Built-in diagnostics).
If instead you want to run a more thorough test with the digital multimeter and measure the resistance and voltage values of the load cell, we've collected all the steps in this blog article in detail: How to check if a load cell is working correctly – Test with digital multimeter.