What do you mean the throttle H bridge is open?

The open circuit of throttle H bridge indicates that there is a problem with one of the four-wheel drive solenoid valves.

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful. Connected with the air filter and the engine block, it is called the throat of the automobile engine. Throttle four-stroke gasoline engines are generally like this. Throttle is one of the most important components in EFI automobile engine system.

The upper part is the air cleaner grille, and the lower part is the engine block, which is the throat of the automobile engine. Whether the acceleration of a car is flexible or not has a lot to do with the dirt of the throttle. Cleaning the throttle can reduce fuel consumption and make the engine flexible and powerful. Whether the throttle should be removed for cleaning is also the focus of discussion among car owners.

Throttle cleaning

When cleaning the throttle valve, it is not necessary to disassemble it, but the sealing part of the inlet steam must be cleaned, and the idle motor must be disassembled for cleaning. There are advantages and disadvantages of cleaning nozzles by borrowing and disassembling. Generally speaking, the maintenance station recommends disassembly and cleaning to prevent other unnecessary waste, such as replacing the sealing ring after disassembly or installing some other gaskets or leaking oil during disassembly.

After cleaning, the throttle will be initialized according to the disassembly procedure just now. After cleaning, the throttle needs to be initialized, because the computer has memory function when adjusting the throttle opening, because there was sludge blockage in the past. In order to ensure the air intake, the computer will automatically adjust the throttle opening to keep the air intake in a normal state.