Relationship between air flow and throttle opening

I am the respondent, not the questioner. It seems that your help was sent to the wrong person.

The main function of the air flow meter is to check the air intake of the cylinder.

The main purpose of detecting the opening of throttle position sensor is to understand the owner's control intention. In fact, when refueling, the pedal cable is connected to the throttle body, so that the computer can know that you are refueling or need to slow down, and will control the engine and wave automatically to meet the needs of the owner.

Both the air flow meter and the throttle valve are installed on the intake system, and the relationship between them is subtle. Although there is no direct connection, when the air flow meter is damaged, the opening value of the throttle position sensor can temporarily replace the data signal of the air flow meter, and the engine ECU can use this signal to verify the memory data stored in the original ECU to control the engine to keep running (some cars are designed in this way, which does not represent all cars). Under normal circumstances, the engine needs both data to better control the engine to meet the demand. It can be said that the two are coordinated and indispensable, and this is the relationship between them.