What are the causes of car line failures? What should I do if the car line fails?

Hello 1Common faults in automobile circuits include open circuits, short circuits, leakage, and poor contact or poor insulation caused by loose wiring, moisture and corrosion. Open circuit: When there is an interruption at a certain point in the circuit from power to load.

Precautions should be taken for repairing line faults When replacing a burned out fuse, a fuse of the same specification should be used. The use of a fuse larger than the specified capacity can cause damage to the appliance or cause a fire.

When the electrical system fails, the phenomenon of the fault and the conditions under which the fault occurs should first be determined, so that the scope of the fault can be roughly determined.

Detection method of open circuit and poor contact fault As shown in the figure below, when a circuit break fault occurs in the line, the method of detecting resistance or voltage with a multimeter can be used to determine the location of the open circuit.

The most common reason why the battery is not working properly can be ruled out, look at it, thank you.

Hello according to your description, there are many reasons for the occurrence of circuit failures, if divided by the length of time, it can be divided into gradual failures and sudden failures, according to the use of equipment functions can be divided into destructive faults and functional faults, gradual faults are gradually formed, the fault is lighter at the beginning, and then a little bit stronger, the survival cycle is longer, and the causes of gradual failures are mostly friction and wear of parts. When the circuit is short-circuited or open-circuited, there will be sudden faults, destructive faults and functional faults, the former is that the electrical equipment has no ability to work, and the latter is the function of the electrical appliances is reduced, but it can still work. Hope mine is helpful to you, hope, thank you!!

If the line fails, generally speaking, the repairman is asked to come over for inspection and maintenance. There are many people who are not professional in the problem of the line, of course, if you have relevant experience, you can try to find the cause yourself. For example, if there is no way to ignite at the time of starting, then most of the cases are the starting motor, the battery, or a line fault of the ignition system.

Then we can see if the battery is normal before the holiday, whether there is this looseness, and then look at the ignition coil.

Whether there is a problem of falling off and short circuit, if there is, it should be connected in time, or replace the corresponding wire, which can effectively solve the problem. <>

But in life, if some people are not particularly clear, then they should call ** to some car repair masters, generally speaking, more than 20 kilometers to solve the problem is at most twice the fare, and then the maintenance cost is probably the same, not much higher.

Some of the problems may cause some parts to be damaged, so some parts should be replaced in time at this time. Generally speaking, replacing parts is something that some professional masters should do, such as some short circuits or some components are burned, then they need to be replaced in time, if it is a fuse.

If it is broken, then the fuse should also be replaced in time. <>

If the mechanic is not available, then you can try to call your friend over for a tow truck。If it is a manual transmission strap.

of the car, then it is easier to solve, if it is an automatic transmission.

The car is a little more troublesome, because the automatic car trailer will have a certain degree of difficulty, and a professional master is required to adjust accordingly, so that the trailer can be carried out. <>

Of course, if the car is inShelf lifeInside, then you can call me ** and ask the staff of the 4S store to consult the branch noisy car to understand, see where the specific problem is, and then whether it can be solved remotely。Because some lines may be loose to cause line failure, just connect some lines directly.

If the car line is faulty, you should find a car repairer to repair and inspect at this time, which will be sent directly to the 4S shop.

At this time, you need to prepare some adhesive tape to connect the circuit or you can also replace the circuit installation.

If the car line is faulty, it is best to send the car to the repair shop for repair, or call ** to find a maintenance master.

Directly call ** to find someone to repair, so that the car can be repaired, and we can also drive the car.

After the car line failure, if you need to deal with it quickly, you can immediately call the staff of the 4S store and send special personnel to the scene to deal with it, so that you can quickly judge the cause of the fault and deal with it correctly.

First of all, we can observe the indication of the ammeter, water temperature gauge, fuel gauge and oil pressure gauge on the dashboard of the car, and then judge whether there is a fault in the circuit, such as the cold state of the engine, when the ignition switch is turned on, the water temperature gauge indicates that the full scale position does not move, indicating that the water temperature gauge sensor is faulty or there is a problem with the line, at this time we need to repair, the best way is to send it to the 4S shop for maintenance, which is not only particularly safe, but also very fast.

First of all, you should park the car correctly, park the car on the side of the road in time and ensure the safety of the people in the car, turn on the hazard warning flashing lights in time and dial the maintenance ** alarm treatment.

You can change the parts of a machine, which is the fastest way, maybe you can drive the car directly to the repair shop and let the masters help you change it.

I think the best way is to rush to the rescue** and find a tow truck to tow the car away, because if you drive it like this, it will be dangerous.

1. The main reasons why the engine cannot be started are: check whether the distributor, spark plug, high-voltage line, etc. are damp due to the rain or car washing. Check whether the battery voltage is sufficient;

Solution: Turn off the vehicle first, dry the parts of the damp part before starting the car; Temporary power supply is provided by connecting the connecting cable to the battery of another (torture) vehicle in order to start the vehicle.

2. The main reasons for the vehicle to turn off when changing gears are: the engine idle speed is too low; The idle shut-off valve is not tightened and the plug comes off.

Solution: Adjust the gear to the correct idle gear according to the vehicle situation; If the plug on the idle shut-off valve or connection section falls off, simply plug it back in.

3. The steering wheel trembles when the vehicle is moving, and the main reasons are: whether there are mud blocks, stones and other debris sticking to the tires of the vehicle; The tire is deformed by impact or the wheel balance weight falls off; Wheel alignment is not performed after the tire is replaced.

Solution: Remove stones from the gaps of the tires and debris stuck on the wheels. In order to avoid potential safety hazards, the deformed tires should be replaced in time, and the nearest auto repair shop should be found to install the balance weight. You should find a professional auto repair shop in time to carry out four-wheel alignment to avoid potential safety hazards.

Hello The common faults of the circuit of the general car mainly include: open circuit, short circuit, damage to electrical equipment, etc.

Open circuit and short circuit, general wire use aging or collision, it is easy to appear above the situation.

Common faults in the rear beam circuit, what faults are so miraculous, generally speaking, if the group is all tail-chasing each other's messages. The leaves are green, and they are all woes.

1.The bulb burns out or isn't bright enough; Many car owners change to a large wattage. The thickness of the wire is designed according to the wattage and current size of the electrical appliance, if the wattage of the bulb becomes larger and the wire is still the original wiring harness, the wire will heat up after a long time of work, harden, and the current will increase ,..

2.line faults; Including poor contact, loose wiring, moisture, corrosion, etc., resulting in poor insulation, short circuit, open circuit ,..

3.component breakdown; Generally, electronic components are very sensitive to overcurrent voltage and temperature, such as the PN junction of transistors, which is prone to overvoltage breakdown ,..

4.Degradation of component aging performance; The old electrical and electronic components of the automobile circuit system are lost, the ignition efficiency is not high, and the throttle is not smooth,..

Common faults in automobile circuits include open circuits, short circuits and tie-in faults.

You can turn on the car circuit fault detection method for the car line fault. Compare the exchange method, which is the most old-fashioned, to replace a suspected defective part with a new type or a well-working accessory to confirm if the symptoms have changed or resolved. This method can be used when the temperature of the cooling water of the car is equal to abnormal, and the computer does not happen to diagnose it, and the problem with the water temperature sensor is suspected.

If the temperature indication anomaly disappears after replacing the new sensor, the original sensor is damaged. This method is simple, but it needs to be replaced with a new accessory or a good one.

The sound detection method is a method of checking for faults by the sound status in an instantaneous manner when working on specific electrically assembled parts. We can hear the sound of the relay when we check the quality of the relay. If there is sound, there is no problem with the relay's control line.

When we inspect the part of the line that is being controlled, this can shorten our repair time by a lot. Test light inspection method, now there are more and more electronic devices on the car, we should give up the previous inspection method of unyielding experiments, and use test light inspection.

The fault light of the car circuit can be turned on when it is on, and the fault light is on. Just say that there is a problem with a certain system, but in order to avoid accidents, it is better to stop the repair immediately. Most cars have alternators and voltage regulators that charge the battery while the engine is working to power the car.

A typical alternator can output between 500 and 1000 watts of power when needed. Cars rely heavily on batteries, so all cars have a battery indicator on the dashboard that warns you when the charging system fails.

The car has a simple circuit that monitors the voltage generated by the alternator. When the voltage is low, turn on the battery indicator. When the battery indicator lights up, it means that there is a problem with battery charging.

When driving, if the battery indicator is on and not off, the most common cause may be a broken alternator belt and a serious failure of the AC engine. After the battery indicator light is on, the car can continue to use the electricity stored in the battery, so it can continue to use the electricity stored in the battery. No part of the car will work after use.

Once the battery indicator light is on, it is possible to drive the car to the garage without damaging the parts. However, the battery runs out of power and the car must reach the garage before it turns off.

Of course not. The failure of the line will cause the vehicle to ignite, and even **, so do not continue to drive, and be sure to repair it in time.

Of course, you can't continue to drive, because if you continue to drive, it is easy to have traffic accidents and cause a bigger **.

If you continue to drive, it is very dangerous and prone to accidents.

Generally speaking, the failure of the automotive electrical system can be divided into two categories: one is the failure of electrical equipment; The other is a line failure. Electrical equipment failure refers to the loss of its original function of electrical equipment itself, including mechanical damage, electrical equipment burning, electronic component breakdown, aging, performance degradation, etc.

In actual use and maintenance, electrical equipment failures are often caused by line faults. Note: Electrical equipment failures can generally be repaired, but some non-detachable electronic devices can only be replaced after failure.

Line faultsLine faults include open circuits, short circuits, loose connections, poor contact, or poor insulation. Sometimes this kind of fault is prone to some illusions, which brings difficulties to fault diagnosis. If necessary, refer to the circuit diagram for troubleshooting.

For example, poor contact between the grounding wire and the body may lead to the electrical equipment switching out of control and the electrical equipment working chaotically. This is because some grounding wires are usually used by several electrical devices. Once the grounding wire is in poor contact, the working circuits of several electrical equipment are connected together, and it is possible to find the grounding path through other lines, resulting in the abnormal operation of one or more electrical equipment.

When the automotive circuit fails by visual diagnosis method, abnormal phenomena such as smoke, sparks, abnormal noise, scorching odor, and heat generation sometimes occur. These phenomena can be directly observed to determine the location of the fault. When a grounding (short circuit) fault occurs in an automobile circuit equipment, it can be judged by the open-circuit method, that is, after the electrical section suspected of having a grounding fault is disconnected, observe whether there is still a grounding fault in the electrical equipment, so as to judge the location and cause of the circuit grounding.

If the short circuit method is used to judge that the automobile circuit has an open circuit fault, it can also be judged by the short circuit method, that is, the circuit suspected of having an open circuit fault is short-circuited with a screwdriver or wire, and the change of the instrument pointer or the working condition of the electrical equipment is observed, so as to judge whether the circuit has an open circuit fault. The test lamp method uses a car bulb as a test lamp to check whether the circuit has an open circuit fault. Observe the indication of ammeter, water temperature gauge, fuel gauge, oil pressure gauge, etc.

Use the gauge method on the dashboard of the car to determine whether the circuit is faulty. For example, when the engine is cold and the ignition switch is on, the water temperature gauge indicates that the full scale position does not move, indicating that the water temperature gauge sensor is faulty or the line is grounded. The low-voltage grounding fire test method is to determine the spark generated by removing a wire of electrical equipment and touching the metal part of the car (grounding).

This method is relatively simple and is often used by automotive electricians. Grounding fire test methods can be divided into direct grounding and indirect grounding. The so-called direct grounding is a direct grounding that does not pass through the load to produce a strong spark.

For example, if the circuit from the ignition coil to the battery is faulty, we can remove the wire connecting the ignition switch from the ignition coil and scratch it on the body or frame. If there is a strong spark, the circuit is normal; If there is no spark, there is an open circuit in this circuit. Indirect grounding is to judge whether the line or load is faulty through the weak spark generated by the grounding of a certain load of the automobile electrical appliance.