Let's not confuse the air conditioning , heating and ventilation of this Toyota Previa. Heating and air conditioning are systems that can lower or increase the air temperature. The first by means of the heat emitted by the engine, and the second with the help of a liquid refrigerant . Your ventilation is all of the ducts and systems that will allow air to reach the interior. The fundamental component is the kicker which emits air into your vehicle. In the event that the air arrives little or not at all, it is probably a ventilation malfunction. We will see in this text how a breakdown works, so as to better identify the problems and assimilate how to remedy them.
How a ventilation works on a Toyota Previa
The ventilation is used initially to regenerate the air inside the passenger compartment of this Toyota Previa. Regarding the pulser, it is generally made of a resistor, a turbine, and a motor. The more the integral resistance of the circuit is lowered, the faster the turbine operates. By turning the button in the vehicle, the resistance is reduced.
Toyota Previa: frequent ventilation problems
Dirty air ducts
When the ventilation works but a small amount of air arrives inside the passenger compartment of this Toyota Previa, it is conceivable that your air shutters are blocked. Using a screwdriver flat, do not hesitate to remove the air shutter covers. You just have to check inside if they are blocked. When it is the case do not hesitate to scour them, as well as the shutters.
Dirty cabin filter
When you smell odors and this ventilation is weak, the malfunction probably comes from the cabin filter of this Toyota Previa. It clogs and piles up bacteria with the years. It is completely normal for it to be dirty, it is used to filter the air that reaches you. There is no manufacturer's instruction on when to replace it. We just advise you to remove it, check its condition. When the latter is really black, it will have to be changed.
Resistance of the blower HS
When the ventilation adjustment of the Toyota Previa does not work well, if not really, it is probably related to the resistance. This resistance increases the voltage to increase the speed of the turbine. A strange functioning of this ventilation is probably due to a resistance malfunction. This little microchip is difficult to repair. You will have to change it.
HS blower motor
There are two fairly regular problems with the kicker. The brushes may be damaged. Over the years, they will wear out and cause electrical faults. Your fan may run very randomly or even stop working at all. The malfunction may also come from bearings of the fan motor. When the ventilation makes a sharp noise, like a rusty mechanism, it can happen that its bearings require lubrication. We invite you to comment on this text if your dysfunction is different in order to help other readers. Good walk!