What Causes a Car to Stop Generating Electricity?

[StAngelina]

Here are the reasons why a generator may not generate electricity and their solutions: 1. The generator belt is broken or slipping, causing the issue. Tighten the adjustment device or replace the belt; 2. There is an open circuit in the generator output wire. Check the condition of the wire; 3. The rotor part is stuck. Manually test if it rotates smoothly. Below are methods to determine if the engine has a fault: 1. Use a multimeter in voltage mode. Set the multimeter knob to the 30V DC voltage range, connect the red probe to the generator's 'armature' terminal, and the black probe to the casing. Run the engine at medium speed or higher. The standard voltage for a 12V electrical system should be around 14V, and for a 24V electrical system, it should be around 28V. If the measured voltage is the same as the battery voltage, it indicates the generator is not generating electricity. 2. Use an external ammeter for testing. If there is no ammeter on the car dashboard, an external DC ammeter can be used for detection.