What is the V level for China 6 vehicles?

What is the difference between the yellow and red lights of the airbag?

The difference between the yellow and red lights of the airbag lies in the reasons for their illumination: 1. The yellow light indicates a fault in the airbag system, such as wiring or sensor issues. 2. The red light indicates problems like a faulty steering wheel clock spring, loose or poor contact of the airbag sensor, airbag body failure, or airbag ECU wiring issues. The airbag is an auxiliary configuration for passive vehicle safety, composed of the airbag sensor, collision airbag, and electronic control device. Below is how the airbag works: 1. When the vehicle experiences a certain level of collision force, the airbag system triggers a chemical reaction similar to a small explosive detonation. The airbag, hidden within the vehicle, inflates and deploys instantly, positioning itself in time before the occupant's body collides with interior components. 2. When the body contacts the airbag, the airbag begins to deflate through the holes on its surface, cushioning the impact and reducing the force exerted on the body.

7

3

Share

Which cylinder does the P0351 fault code indicate?

P0351 indicates a fault in the fifth cylinder; it refers to a primary or secondary circuit malfunction in ignition coil A. Below are the relevant details: 1. The control module in the ECU may have failed; alternatively, the control module could be within the ignition coil. 2. The ignition coil may have an internal breakdown or a primary short/open circuit. It is recommended to try replacing the ignition coil. If that doesn't work, consider replacing the ECU, provided the high-voltage damping wire and spark plugs are functioning correctly. Here is an introduction to the P0351 fault code: 1. The role of the ignition coil is to transform the 12-volt voltage from the car battery into the thousands or even tens of thousands of volts required for spark plug ignition. 2. The ignition coil contains two sets of windings: the primary coil and the secondary coil. The primary coil has thicker enameled wire with fewer turns, while the secondary coil uses thinner enameled wire with relatively more turns. 3. When the primary coil is connected to a power source, a strong magnetic field is generated around it as the current increases, and the iron core stores this magnetic energy. When the switching device disconnects the primary coil circuit, the magnetic field of the primary coil rapidly decays, inducing a high voltage in the secondary coil. 4. The Electronic Control Unit (ECU) continuously monitors each ignition main circuit. If the ECU does not receive a valid Ignition Diagnostic Monitor (IDM) pulse signal from the ignition module (integrated into the ECU), this fault code will appear. Possible causes include issues with the ignition start/run circuit, ignition coil circuit, the ignition coil itself, or a fault in the Electronic Control Module (PCM or ECM).

16

3

Share

What Causes the Engine to Roar Without Power When Accelerating Hard?

When the car's accelerator is pressed hard but lacks power, it is due to abnormal engine performance. The following are specific reasons: 1. The car engine operates through the coordinated work of the intake system, ignition system, and fuel system. If any of these components has an issue, it can potentially reduce the engine's power, leading to unresponsiveness when pressing the accelerator, inability to increase engine speed, and lack of power during acceleration. 2. When the accelerator is pressed, the throttle cable moves the throttle valve, which has a position sensor. The control unit uses the signal from the throttle position sensor to determine the throttle opening, calculates the corresponding signal voltage, and then determines the fuel injection amount based on this voltage. If the throttle position sensor is dirty or the voltage is imbalanced, it can cause electronic throttle failure, resulting in a lack of power when accelerating hard. 3. Apart from electronic throttle issues, attention should also be paid to the engine's intake, fuel system, and ignition system. If there is a leak or blockage in the intake system, it can also lead to a lack of power when accelerating hard.

6

1

Share

Do I Need to Replace Tires at 70,000 Kilometers?

Tires generally have a service life of about 3 years or 80,000 kilometers, but this is not absolute. The wear and tear of tires are greatly influenced by road conditions. Smooth roads extend tire life, while bumpy or gravel roads will definitely reduce it. Here are methods to determine if tires need replacement: 1. Tread Depth Check: The condition of tire treads directly affects traction and vehicle stability. If the tread is too thin or worn out, it can lead to longer braking distances and increased risk of skidding in rainy conditions. Regularly check the tread depth. Typically, each tire has a tread wear indicator; if the tread wears down to this mark, it's time to replace the tire, meaning the tread depth is less than 1.6 mm. 2. Rubber Aging Check: The most common sign of rubber aging is cracking or fine cracks on the tire surface, known as tire cracking. Tire rubber requires a certain hardness, achieved through a manufacturing process called vulcanization. Vulcanized rubber increases hardness but will age over time. Therefore, tires generally have a lifespan of about 3 years.

5

3

Share

How to Solve Slow Car Ignition?

Slow car ignition may involve reasons such as a faulty oxygen sensor, air leaks in the intake system, a clogged throttle, low fuel pressure, incorrect ignition timing, or low cylinder compression pressure, all of which can lead to slow ignition. The specific cause needs to be diagnosed by a professional. Below are solutions for slow ignition: 1. If the car ignites slowly when cold but normally when warm, it is likely due to cold weather. 2. In winter, lower temperatures cause the engine block to be cold during startup, making fuel difficult to atomize. This results in insufficient mixing of fuel and air in the cylinder, and a sharp drop in gasoline vaporization. Additionally, the viscosity of engine oil increases in winter, raising the engine's operating resistance and causing difficulty or failure to start. This is normal and not a cause for concern. 3. If ignition is slow in summer, first consider issues with the ignition system. It could be a problem with the spark plugs, such as reaching the end of their lifespan or excessive electrode gap. Solution: Replace the spark plugs.

9

5

Share

What are the symptoms of a broken intake flap?

Mainly, a broken intake flap causes air leakage due to cracking, leading to symptoms such as high idle speed, weak acceleration, and stalling during acceleration. Severe cracking can even prevent the car from starting. Here is additional information: 1. If the intake manifold is damaged, it will cause air leakage, reducing gas pressure, which in turn weakens the intake capacity, decreases engine power, and results in insufficient air intake. This can also lead to increased carbon buildup. These issues are generally caused by a cracked intake manifold. 2. Air leakage from the intake manifold will produce noise, and the car may experience shaking, unstable idle speed, weak acceleration, and stalling. Severe cracking can even prevent the car from starting.

2

1

Share

What is the V level for China 6 vehicles?

What is the difference between the yellow and red lights of the airbag?

Which cylinder does the P0351 fault code indicate?

What Causes the Engine to Roar Without Power When Accelerating Hard?

Do I Need to Replace Tires at 70,000 Kilometers?

How to Solve Slow Car Ignition?

What are the symptoms of a broken intake flap?

Which line to stop at for the fixed-point parking on the slope in Subject 2?

Can You Shift from D to S Gear While Driving an Automatic Car?

How to Return Paddle Shifters to Automatic Mode?

What is the correct way to use the automatic transmission D+ and D-?