How to Bypass Blower Motor Resistor?
Are you having trouble getting your car’s blower motor to work correctly? If so, you may need to bypass the blower motor resistor. In this article, we will provide step-by-step instructions on how to bypass the blower motor resistor in order to get your car’s blower motor working again. Read on for more information about the process and what you need to do to ensure a successful bypass.
To bypass a blower motor resistor, you need to locate the resistor, unplug the wiring harness from it, and then connect the wiring harness to the fan motor. This will allow the fan motor to run at full power, bypassing the resistor.
Follow these steps to bypass a blower motor resistor:
- Locate the resistor, which is usually mounted near the blower motor or the HVAC unit.
- Unplug the wiring harness from the resistor.
- Connect the wiring harness to the fan motor.
- Test the system to make sure it is running correctly.
What is a Blower Motor Resistor?
A blower motor resistor is a component in an automobile’s air conditioning system that regulates the amount of air that is allowed to pass through the blower motor. The blower motor is what controls the speed at which the air is moved through the system. The resistor is designed to help regulate the flow of the air and can be adjusted to increase or decrease the speed at which the air is moved.
In some cases, the blower motor resistor will fail and need to be replaced. This can cause a variety of issues, including reduced air flow and increased noise from the blower motor. In order to fix this issue, the blower motor resistor must be bypassed.
How to Bypass a Blower Motor Resistor
The first step in bypassing a blower motor resistor is to locate the part. This is typically located on the firewall of the vehicle and can be identified by its rectangular shape. Once the part is located, the next step is to remove it from the vehicle.
The next step is to install a bypass wire. This wire should be connected to the positive terminal on the blower motor, and the negative terminal should be connected to the negative terminal on the blower motor. This will bypass the resistor and allow the blower motor to operate at its full speed.
Tools Required to Bypass a Blower Motor Resistor
In order to successfully bypass a blower motor resistor, there are a few tools that may be required. These include a socket set, a wrench set, and a pair of pliers. Additionally, it may be necessary to use a voltmeter in order to ensure that the connections are properly made.
Testing the Bypass
Once the bypass wire has been installed, the next step is to test the bypass. This can be done by turning on the air conditioning and setting the fan speed to its maximum setting. If the fan is operating at its full speed, then the bypass has been successful. If not, then the connections may need to be checked and adjusted accordingly.
Troubleshooting a Blower Motor Resistor Bypass
If the bypass does not seem to be working correctly, then there are a few steps that can be taken in order to troubleshoot the issue. The first step is to check the connections to ensure that they are all properly connected. If the connections are in place, then the next step is to check the fuse. If the fuse is blown, then it will need to be replaced in order to restore power to the blower motor.
Replacing the Blower Motor Resistor
If the bypass is not successful, then it may be necessary to replace the blower motor resistor. This can be done by removing the old resistor and installing a new one in its place. It is important to ensure that the new resistor is the same size and type as the old one in order to ensure that it will fit properly.
Preventing Further Damage
Once the blower motor resistor has been replaced or bypassed, it is important to take steps to prevent further damage. This can be done by checking the air filter and replacing it if necessary. Additionally, it may be necessary to check the wiring for any damage or corrosion and repair or replace it if needed.
Related FAQ
Q1. What is a Blower Motor Resistor?
A blower motor resistor is a device used to regulate the speed of a vehicle’s blower motor, which is a device that controls the air flow from the air conditioning and heating system. The resistor is typically located in the engine compartment and is connected to the blower motor. The resistor is meant to control the speed of the blower motor, allowing the driver to adjust the speed of the air flow.
Q2. What are the Symptoms of a Faulty Blower Motor Resistor?
When the blower motor resistor is faulty, the most common symptom is that the blower motor will only run on the highest setting and will not respond to any other speed settings. Other symptoms may include a lack of power when the blower motor is switched on, or a burning smell coming from the blower motor itself.
Q3. What is the Purpose of Bypassing a Blower Motor Resistor?
The purpose of bypassing a blower motor resistor is to allow the blower motor to run at its maximum speed and not be limited by the resistor. This is especially useful if the resistor has failed or if the vehicle is using a higher wattage blower motor than the resistor was designed for. Bypassing the resistor can also help to reduce the amount of power being drawn from the vehicle’s electrical system.
Q4. How Do You Bypass a Blower Motor Resistor?
Bypassing a blower motor resistor is relatively simple. The first step is to disconnect the negative battery cable. Next, locate the blower motor resistor, which is typically located in the engine compartment. Disconnect the wires from the resistor and connect them directly to the blower motor, bypassing the resistor. Finally, reconnect the negative battery cable.
Q5. What Should I Do if I Have Difficulty Bypassing the Blower Motor Resistor?
If you are having difficulty bypassing the blower motor resistor, it is best to consult a professional mechanic. This is because bypassing the resistor can be a complicated process, and it is important to ensure that the job is done correctly. A professional mechanic will also be able to identify any issues that may be causing the resistor to fail in the first place.
Q6. What are the Benefits of Bypassing a Blower Motor Resistor?
Bypassing a blower motor resistor can be beneficial in a number of ways. First, it allows the blower motor to run at its maximum speed, maximizing air flow. Second, it reduces the amount of power being drawn from the vehicle’s electrical system. Finally, it allows for greater control of the air flow from the air conditioning and heating system.
In conclusion, it is clear that bypassing the blower motor resistor is an easy process that anyone can do, even if you are a beginner. With a few simple tools, you can complete the job in a timely and efficient manner. By following the steps outlined in this article, you will be able to complete the job safely and securely, allowing you to enjoy the cool, refreshing air coming from your car’s air conditioning system.
