What are the methods for detecting circuits?

[DeKaylee]

Methods for detecting circuits are as follows: 1. Visual Diagnosis Method: When a car circuit malfunctions, abnormal phenomena such as smoke, sparks, unusual noises, burning smells, or overheating may occur. These phenomena can be directly observed to determine the location of the fault. 2. Open Circuit Method: If a ground fault (short circuit) occurs in the car's electrical equipment, the open circuit method can be used for diagnosis. This involves disconnecting the suspected faulty circuit section and observing whether the ground fault persists in the electrical equipment, thereby identifying the location and cause of the circuit grounding. 3. Short Circuit Method: For open circuit faults in car circuits, the short circuit method can also be employed. This involves using a screwdriver or wire to short-circuit the suspected open circuit section and observing changes in the instrument pointer or the operational status of the electrical equipment to determine if an open circuit fault exists in the circuit.