307 The left turn signal lamp flashed, and the left rear light did not light up. Fault repair operation.
BonnieBronte 
8 An old lion for more than ten years, the left turn signal occasionally flashed across the previous month, and it can automatically return to normal. Check that all the lights are in good condition. During the National Day holiday, it was found that they no longer automatically return to normal. Check that the left rear turn signal signal does not light up. Remove the left rear light group assembly, check that the bulb is normal and there is no open circuit, and check that the relevant fuses are in good condition. Combined with the fact that this fault can automatically recover in the early stage, it is estimated that it was caused by poor contact between the relevant parts of the lamp set, which finally led to an open circuit. Unplug the plug and inspect, and it was found that the fourth pin was corroded and broken inside the plug. If you go to the 4s or a repair shop, 100% of the lamp set assembly and plug will be replaced. A certain precious lamp board is 120 yuan/piece, and the plug is 30 yuan/piece. Plus the working hours, it costs at least 300 yuan. An old car and a small circuit failure, you can do it yourself and just fly a cord. It’s simple. The following is a detailed illustration to share with you.
Removed light panel assembly
Connect the wire and the flying wire on the fourth leg with a thread-free tool, use pliers to press the metal sheet on it, then button the button, the connection is completed, turn on the left turn signal, and finally return to normal.
The principle is very simple, that is, the original connection is not working. Now I open the connection again, connect the metal part connected to the pins with the copper pillar, and then connect the plug to the metal part connected to the copper pillar through a breakable wire connection tool, directly replacing the previous plug-in connection.
Fault analysis: The connection between the pins and the plug is not tight, the turn signal flashes frequently, causing this connector to be used more frequently than other connectors, and the vibration of the car causes sparks. Multiple sparks cause metal oxidation, producing oxides, and the oxides are wetted. The oxides further cause metal corrosion, and eventually change from quantitative change to qualitative change, and the connection is completely disconnected.
Price calculation: For copper pillars and breakable wire connection tools, the wires add up to no more than 10 yuan, which takes 1 hour. Do it yourself to have enough food and clothing and fully experience the fun of doing it.
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