????Understand everything! About the car's hot air system. (Corsa) hot air solenoid valve, hot air valve, hot air radiator, air diffusers and panel selector switches. I show the location of the hoses, part names, and test the entire hot air system. With the multimeter. Resistance, voltage, volts and opening of the hot air solenoid valve. What is the solenoid valve? Open or close the flow of a certain equipment or pipe electrically. The valve is composed of two basic components that are the body, where the air passes through and the coil, responsible for the electrical actuation of the mechanical part of the valve. 00:00 Opening of all content. 00:30 Understand about the solenoid valve, and the hot air system. ???? With the vacuum function. The valve needs the #vacuum, generated inside the intake manifold. Through the cylinders and piston. This vacuum goes to the check valve, in one direction, entering the solenoid valve connected to 12v, and going to the hot air valve, causing it to close. Blocking the coolant from entering the hot air radiator. ????What is backfire????? It is a pop generated inside the manifold, after starting the car and accelerating quickly. ????What is a check valve in the brake servo and in the solenoid valve????? The check valve is responsible for locking the pressure and maintaining the air flow in only one direction, the vacuum. 02:42 How to use the multimeter to check the power supply. ????I connect the test leads to the solenoid valve. On the multimeter, I set it to the 20vts scale and continue to measure 12v of power supply. 03:10 understanding about connecting the selector switch on the panel. ???? When you turn on the hot air, on the #selectorswitch on the panel. The solenoid valve turns off! When you turn off the hot air on the selector switch. The solenoid valve receives 12v, to close the flow of coolant from the water pipe connected to the hot air radiator. 04:15 Inlet and outlet of the hot air valve. And operation! ????The radiator receives the coolant from the #waterpipe, and exits through the hot air valve! Being locked and open. When locked, it is receiving vacuum from the intake manifold. Open when the vacuum is isolated. 04:55 1st Test: Leakage and clogging of the hoses. I show if only air is entering and exiting. Water cannot pass through the hoses! 06:39 2nd Test: Tightness. Blowing the solenoid valve inlets to check if air is not passing through 08:06 3rd Test: Opening the solenoid valve with 12v ???? I apply 12v to the terminal and blow on the valve inlets to check if it is opening. And letting air pass through. 08:54 4th Test: Ohms resistance. ???? 200 ohm scale resistance variation is from 25 ohm to 35 ohms. 10:05 Summary with the car on. I show all the details, in summarized form! With the engine on. 11:02 Thanks to the subscribers and their comments. If you like the way I pass on all the content! be sure to check out other similar content. Tests and operations! ???? Canister of Corsa Wind, Classic Super and others... • ???? Canister of Corsa Wind, Classic Sup... subscribe to our channel and leave your like and comment on what you think! Do you have any questions? Comment! I will answer with pleasure. Click here???? / jd mechanics rodrigues