What are the ways to check your car's wiring harness

Do you know the methods of checking automotive wiring harnesses? Special tool testing methods, test light testing methods are more suitable for checking the common failure situation of transmission line short circuit. When using the temporary test light method, it should be noted that the power of the test light should not be too large, to detect whether the electronic controller control output terminals are exported, whether there is enough export, in particular, care must be taken to prevent damage to the control board overweight. It is recommended to use the diode test light. When a part of the automobile electrical system malfunction, there will be smoke, flame, abnormal noise, burning odor, sustained high temperature and other abnormalities. According to the human visual organs of hearing, touching, smelling, looking at the wiring harness and household electrical appliances for image checking, inferring the location of the fault, greatly improving the speed of maintenance. For example, when automobile wiring fails, abnormal conditions such as smoke, flame, abnormal noise, burning odor, and sustained high temperature often occur. Based on image inspection, the fault location and common fault characteristics can be quickly deduced. Automotive Wiring Harness CJTSMT Transmission Line Jumper Wiring Inspection Method Jumper wiring method means that after suspected faulty transmission line wiring, observe the changes in the meter pointer or the work of the electrical equipment, and then deduce whether there is a short circuit or poor contact on the circuit board of common faults. Cross-wiring refers to the connection of two power circuits through a wire to two points, cross-wiring power circuits between two points of the potential difference is zero, not a short-circuit fault. Instrumentation equipment detection methods are used to diagnose vehicle wiring faults using comprehensive fault detectors, digital multimeters, no waveforms, current clamps and other instrumentation equipment. For electronic control system vehicles, a comprehensive fault detector is generally used to search for engine fault codes and diagnose the vehicle fault category; then a multimeter, current clamp or no waveform is used to check the operating voltage, resistance, current or waveform of the relevant power supply to diagnose the cause of the electronic wiring harness transmission line fault.

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