2018 chevy trax blower motor resistor location

#2018 chevy trax blower motor resistor location driver
#2018 chevy trax blower motor resistor location manual

Or, carmakers can opt for a motor resistor AND a high speed relay. See the wiring diagram for that setup below. Or, carmakers can supply power to the motor and control blower speeds on the ground side of the circuit. In those applications, the motor resistor reduces power for the slower speeds and the blower motor has a permanent ground connection to complete the circuit. In one design, the car maker supplies battery power to the speed switch, which switches the power to the appropriate connection on the blower motor resistor.

#2018 chevy trax blower motor resistor location manual

Blower motor wiring diagrams for three or four speed systemsĬarmakers use these three common wiring methods to supply power and ground to the blower motor in a manual system using a blower motor resistor.

#2018 chevy trax blower motor resistor location driver

So a half speed driver request will result in the blower motor controller pulsing the ground connection off twice as often as when the fan is running at full speed. To obtain the requested speed, the motor controller rapidly pulses the ground circuit on and off. The control head then sends a command to the motor controller to change the speed to the driver’s preferences.

In most cases, the controller receives a digital input from the speed switch or HVAC control head. What is a blower motor controller?Ī variable speed motor is controlled by a digital speed controller. So you may have high speed, but no lower speeds. The resistors are arranged in series to reduce the voltage in steps, depending on where in the series you apply power.īlower resistors can burn out.

Heating systems with just 3 or 4 speeds use a blower motor resistor along with the speed switch to regulate the motor speed. Why do you need to know that? Because most automatic systems use an electronic motor controller while manual systems usually use a blower motor resistors to obtain 3 or 4 different speeds. If you have a manual system where you vary the temperature, you probably have a 3 or 4 speed fan. In that case, you usually have a variable speed fan.

Here are the blower motor fix steps: To determine which blower motor wiring diagram, first determine if you have a manual or automatic heating system in your vehicleĭo you set the temperature and the system keeps that temperature or do you have to adjust the temperature up manually and then turn it down once the cabin heats up? If you set the temperature and the system takes care of the rest, you have automatic climate control. Repair Topics > Heating system and Blower > Blower motor wiring diagrams Blower motor wiring diagrams Blower motor wiring diagrams - two most common diagramsĪ blower motor problem is easy to fix if you understand how your particular system is wired.