What are the diagnostic methods for car faults?

1 Answers
VanEzra
07/30/25 5:28am
Diagnostic methods for car faults are as follows: 1. Observation and Inquiry Method: When a car develops a fault and requires diagnosis, the repair personnel should make a preliminary judgment about the car's model and usage period at first glance. The model can be identified from the exterior; by exposing the engine through the exterior or flipping the cab, the usage period can be determined. Experienced repair personnel can even immediately identify the car's fault. 2. Experience Method: As the name suggests, the Experience Method of diagnosing faults relies on the basic skills and extensive experience of the driver and repair personnel to quickly and accurately diagnose car faults. 3. Observation Method: The Observation Method involves the car mechanic carefully observing the fault phenomenon at the location indicated by the car user and then making a judgment about the fault. This is one of the most commonly used, basic, and effective fault diagnostic methods. 4. Auditory Method: Using hearing to diagnose car and engine faults is the most common and simple method. When the car is running, the engine operates under different conditions, and the car and engine as a whole produce a noisy yet regular sound. When a fault occurs in a certain part, abnormal sounds will emerge. Experienced individuals can immediately diagnose the car fault based on the abnormal sounds. 5. Test Method: Using the Test Method to diagnose car and engine faults is one of the common methods. The Test Method can be used to check the functions of the car and engine without or with minimal disassembly to achieve the purpose of diagnosing faults.
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