车灯是汽车上一个非常重要的部件，在夜间行驶时需要用到车灯。大灯有远光和近光，远光的照射距离更远，亮度也更高。汽车大灯不亮排查方法：
The lamp is a very important part of the car, it needs to be used when driving at night. The headlamp has high beam and low beam, the illumination distance of high beam is farther, and the brightness is also higher. Troubleshooting method for automobile headlight failure:
一、熔丝是否烧断：用螺丝将刀将变光开关火线分别与远、近光接线柱搭接时，分下面几种情况：
1、 Whether the fuse is burnt out: when the live wire of the dimmer switch is lapped with the far and low beam terminals with a screw driver, the following conditions shall be considered:
1、灯都亮，表明变光开关有故降。
1. The lights are on, indicating that the dimmer switch is down.
2、若搭—接时，远光亮、近光不亮，则故障在变光开关到大灯之间或到近光灯之间。
2. If the high beam is bright and the low beam is not bright when connecting, the fault is between the dimmer switch and the headlamp or between the low beam lamp.
3、若大灯远光灯不亮时，应查看远光指示灯是否亮，若亮，表明故障在接线板至大灯之间，若不亮，则表明接线板至变光开关之间有故障。
3. If the high beam headlight is not on, check whether the high beam indicator is on. If it is on, it indicates that the fault is between the wiring block and the headlamp; if not, it indicates that there is a fault between the wiring board and the dimmer switch.
4、若只有一个大灯亮，另一个不亮，则可能是灯丝烧断或接线有断路，或是搭铁不良(大灯亮度弱)。
4. If only one headlamp is on and the other is not on, it may be that the filament is burnt out or the wiring is open circuit, or the grounding is poor (the headlamp brightness is weak).
二、车灯灯泡被烧：
2、 Lamp bulb burned:
1、电压调节器有故障，电压过高。
1. The voltage regulator is faulty and the voltage is too high.
2、蓄电池导线接触不良，造成发电机空载电压过高。
2. Poor contact of battery lead leads to high no-load voltage of generator.
3、发电机电枢和磁场线圈间有短路。
3. There is a short circuit between the generator armature and the field coil.
近光灯灯泡更换方法如下；
The replacement method of low beam lamp bulb is as follows:;
1、将灯泡的电源插口拔开。拔开电源接口后，将灯泡背后的防水盖拿掉，就可以看到里面的灯泡了。灯泡一般是由钢丝卡簧固定，某些车型的灯泡还带有塑料底座。
1. Pull out the power socket of the bulb. After unplugging the power connector, take off the waterproof cover behind the bulb, and you can see the bulb inside. The bulb is usually fixed by a steel wire clip, and some models have a plastic base.
2、拔下供电卡扣后（部分车型还有防尘罩，取下即可），按住供电卡扣的限位释放按键，轻轻的拔下供电卡扣。此时就可以看见暴露出来的灯泡儿了。逆时针旋转灯泡底座，很快会听见清脆的“咔”的一声就说明到头了，可以轻轻的拿出来了。
2. After pulling out the power supply buckle (some models have dust cover, just take it off), press and hold the limit release button of the power supply buckle, and gently pull out the power supply buckle. At this point, you can see the exposed light bulb. Turn the bulb base anticlockwise, and you will soon hear a crisp "click" sound, indicating that the end is over, and it can be gently taken out.
3、将新灯泡放入反射罩，对准灯泡的固定卡位，捏住两边的钢丝卡簧往里推，将新灯泡固定在反射罩内。重新盖上防水盖，将灯泡电源插上，更换操作便完成了。
3. Put the new bulb into the reflector, align it with the fixed clamp position of the bulb, pinch the steel wire clips on both sides and push it inward to fix the new bulb in the reflector. Re cover the waterproof cover, plug in the bulb power supply, and the replacement operation is completed.
