In auto maintenance, make no arbitrary judgement of the good or bad of any sensor or implementer, let alone replace it, many repairers read the fail code at the outset, but sometimes a small detail computer can also miss, or even fail-out, and, in short, you can try it in the following simple ways:
Intuitive
In case of failure, the power lines of the various sensors and implementers should first be checked, and most of the failures are generally due to poor or short-circuit contact. Within the distribution of the lines, inspections are to be carried out from the point where they are prone to wear and tear, when the author was repairing a malfunctioned vehicle, which suddenly went off while travelling on a large road in a local mountain pit, and could never be activated again. The driver had called several car mechanics for first aid, but the repairer, after testing, considered that the subwire (sensor) had been damaged, but could not do so with new items. In taking over the vehicle, taking into account the road and terrain conditions in the event of a sudden breakdown at the time, the author directly checked the distribution points of the line and areas prone to wear and tear, and found that four steering lines had been broken in the vicinity of the firewall near the brake booster, and that no consideration had been given to any of the lines that would have enabled the engine to start after repair. It was only later known that two of the lines were the lines of the ignition system, and that the engine stubs were damaged as the vehicle was travelling, resulting in excessive stress between the engine and the beam, which caused the above-mentioned malfunction。
Vibration method
Most cars only experience problems when they move and vibrate, where they can be tested using vibration. Vibration sites are dominated by connectors, wiring, sensors, implementers, etc. For connectors, a light vibrate connector in its vertical and horizontal direction; for lines, a light swing of the line connector in its vertical or horizontal direction should be carefully checked; for sensors, various sensors may be lightly slapped by hand, but not by force; for implementers, an executioner may not work because of internal problems, sometimes miracles after external vibration. The author had encountered an example of a car with no glitch, which had no broken code output at the time, had replaced the air flow meter at another repair plant but was still inoperable, had taken over the vehicle, tried to turn the air flow meter plugs on, failed, did not find any problem with the connectors and transducer plugs and circuits, and later opened the driver's seat to the plugper, shot the engine euu with his hand, lost it miraclely, and continued to shake when it went down, indicating that the problem was on the plug-plugs of the engine ecu, which had disappeared until the plugs had been reprocessed。
Axis method
Some of the problems can occur in invisible places, which can cause motors to fail to start when the problem is serious, sometimes bad or bad. In such cases, a small clamp can be used to tie the wire to a single piece of the test vehicle, which can easily be pulled out as long as there is a break in the circuit anywhere. One of the sedan vehicles is sometimes not easily activated, which is of course difficult to find, but the writer found out when he used this method to repair the car. At that time, the vehicle could not have been activated, and it was easily pulled out of the line with a little clamp on the line, which was found to be a worn-out line, which, since the ground was a hard plastic, did not cause a line-laying accident, pending repair and resolution of the failure。
Heating
Some malfunctions occur only in hot vehicles and may be caused by the heat of the spare parts or sensors in question, when a heating test of the parts or sensors that are likely to cause the failure can be performed using electro-blowing or similar heating tools to check if the failure occurs, but it is clear that the heating temperature cannot exceed 60°c for some sensors, let alone directly heat parts in computers. There was a santana 2000 car, which was in good condition when it was cold, and a hot car sometimes suffered from a lack of speed, sometimes at a low speed and even when the fire went out. The author initially heated the vehicle's water temperature sensor with an electric blower, and accidentally discovered that the temperature of the sensor was higher and the resistance was greater, and after trying to pull the plug, the vehicle was normal and the water temperature sensor was replaced and the malfunction was eliminated。
Water showers
Some of the malfunctions occur only in rainy days or in low-temperature environments, where they can be done with water gonorrhea and can be sprayed with water on vehicles to check where the failure is. However, attention is drawn to the fact that water may not be sprayed directly on engine electrically controlled parts, indirectly changing temperature and humidity in front of the radiator, or on electronics. A car could not start the engine after washing the car, but only a few hours later did it start again. In order to prevent similar problems from reoccurring, the driver sent the car to the company where the writer was based, considering that the problem had occurred at the time of the car wash, so that the vehicle was sprayed directly with water, the car started normally, and when the water was sprayed onto the subwires, the engine slowly shivered, and then the fire stopped and could no longer be activated. The sub-wire was carefully observed, and it was found that the sub-wirecaps had exploded and that the water had infiltrated from the cracks into the sub-wires before the failure was completely eliminated after replacing the sub-wire caps。
