Where is the blower motor control module located?

Where is the blower motor control module located?

It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.

What controls the blower motor speed?

blower motor resistor
The blower motor resistor is an electrical component that is a part of the vehicle’s heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed.

How do you change a blower motor speed resistor?

How to Replace a Blower Motor Resistor

1. Step 1: Remove the glove box door, if necessary.
2. Step 2: Disconnect the wiring harness and remove screws.
3. Step 3: Remove and replace the blower motor resistor.
4. Step 4: Tighten screws and reattach wiring harness.
5. Step 5: Reinstall the glove box door.

Where is the heater blower located?

The blower motor is usually under the dashboard on the passenger side. Blower motors that make loud squeaks or rattling noises may be worn out and on the verge of packing it in, but sometimes those noises are caused by leaves or other debris that can be cleaned out after the motor is removed from the vehicle.

What does a blower control module do?

An A/C fan control module helps to control the blower that supplies air to the cabin of a vehicle, as well as the cooling fans. The module helps to make sure that the cool air that is produced within the A/C system of a car is blown into the cabin.

How can I make my blower motor faster?

You can increase or decrease the blower speed by slightly adjusting the pulley on the blower drive motor. To increase blower speed, slightly loosen the setscrew that holds the pulley to the driveshaft. Move or turn the pulley clockwise on the shaft one turn, then tighten setscrew.

How do I know if I need a blower motor or a resistor?

Blower Motor Resistor Test Typically, if the fan will work on some speeds but not on others, the resistor is suspect. Okay, let’s say there’s no melting going on, but your fan doesn’t work on all speeds. Typically, if the fan will work on some speeds but not on others, the resistor is suspect.

How much is it to replace a blower resistor?

How Much Does a Blower Motor Resistor Replacement Cost? A blower motor resistor costs anywhere between $1 and $400. Factors that can affect its price include its condition, configuration, material, and set or kit inclusions. Labor may cost you an extra $45 to $55, depending on your area.

What are the symptoms of a bad blower motor?

What Are Signs Your Blower Motor Needs to Be Replaced?

• Poor or Airflow from Air Vents. This will be the first and most obvious sign your blower motor has a problem.
• No Airflow At All From Vents.
• Skyrocketing Energy Bills.
• Strange Noises When You Turn on the Heat.
• Overheating Blower / Weird Smells.

What causes a heater fan to stop working?

If little air is coming through the vents (hot or cold), then it could be because the blower motor for the fan or a switch or resistor that controls fan speed isn’t working. Another cause might be that the electronically controlled “blend doors” that direct air flow are stuck or broken.

How does a blower motor speed control module work?

Based on the driver’s input to the blower speed switch, the HVAC control head sends a digital signal to the blower motor speed control module. The module uses that information to pulse either power or ground to the motor.

Why is my blower motor stuck in only one speed?

If the blower motor in your 3.8L GM vehicle is stuck in only one speed (usually stuck in high) or no blower speeds work, then there’s a good chance that the blower control module is bad and behind the problem.

Where is the blower motor regulator on a Mercedes Benz?

by Don Bowman. The Mercedes Benz fan blower motor regulator is a series of resisters in a printed circuit board about 2-inches square located right next to the blower motor. The Mercedes has a series of sensors that, working in concert with a computer, maintain a constant climate in response to the settings on the console.

How do you jumpstart a variable speed blower motor?

If you have a variable speed blower motor system: Disconnect the electrical connector at the blower motor and jumper power and ground to the motor, bypassing all the speeds controls. Run a fused jumper from the battery to the power side of the motor and connect a temporary grounding jumper to the other motor terminal.