How to test Honda Accord blower motor resistor?
Testing Honda power transistor (blower motor control module). For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON. Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times.
What does the resistor on a heater do?
It is responsible for controlling the blower motor’s fan speed. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor.
What to do if your heater motor resistor is failing?
If your vehicle is displaying any of the symptoms above, or you suspect that your blower motor resistor may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the component should be replaced.
Where is the resistor on a blower housing?
With the glove box removed, you will see it mounted face down on the right side of the blower housing. The electrical connector plugs into the center of the resistor and points straight down. Disconnect the electrical connector. Remove the two Phillips screws that attach the resistor to the blower housing.
How much does a Honda Accord motor resistor cost?
The best part is, our Honda Accord Blower Motor Resistor products start from as little as $29.44. When it comes to your Honda Accord, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Blower Motor Resistor product and part brands so you can shop with complete confidence.
Testing Honda power transistor (blower motor control module). For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON. Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times.
Where is the blower motor resistor located on a car?
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 are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.
How much does it cost to replace a blower motor resistor?
The blower motor resistor or control module replacement is not very expensive. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership.
Where is the blower motor resistor on a Mazda 5?
In many cars it’s fairly easy; the blower motor is located behind the glove box and held by 3-4 screws. In others it might be located inside the dash (e;g Mazda 5) which makes replacement difficult. If you need a proper diagnostic procedure, we posted several links where you can access a service manual for your car for a subscription fee.
How much does a Honda Accord blower motor resistor cost?
Your Honda Accord will be happy to know that the search for the right Blower Motor Resistor products you’ve been looking for is over! Advance Auto Parts has 12 different Blower Motor Resistor for your vehicle, ready for shipping or in-store pick up. The best part is, our Honda Accord Blower Motor Resistor products start from as little as $25.33.
How much does Advance Auto Parts blower motor resistor cost?
Advance Auto Parts has 12 different Blower Motor Resistor for your vehicle, ready for shipping or in-store pick up. The best part is, our Honda Accord Blower Motor Resistor products start from as little as $25.33. When it comes to your Honda Accord, you want parts and products from only trusted brands.
What causes a blower motor resistor to wear out?
Since the blower motor and resistor are working almost constantly, it can wear out over time. If your blower motor only works on certain speeds or is stuck on one speed, you may have a problem with the blower motor resistor. O’Reilly Auto Parts has replacement blower motor resistors to fit most cars, trucks and SUVs.
Which is the best blower motor resistor brand?
Some of our top Blower Motor Resistor product brands are Intermotor, and Dorman – OE Solutions. We’re sure you will get the right product to keep that Accord running for a long time. We even have reviews of our OEM and aftermarket Blower Motor Resistor products to help you buy with confidence.
Why do I need a power transistor for the blower motor?
This is due to the fact that the power transistor depends on the blower motor to function and starting your diagnostic with the power transistor, instead of the blower motor, could have you replacing parts your Honda doesn’t need. The following tutorial will help you test the blower motor in an easy step-by-step manner:
Where does the ground go in a Honda blower motor?
The blower motor control module (Honda calls it Power Transistor) supplies the ground. The power transistor has 4 wires: two come from the climate control system control unit, one is the ground, one goes to the negative terminal of the blower motor.
Why does my Honda Accord turn itself off?
1997 to 1999 Accords have a known problem with their ignition switch, which causes your cluster to die at the same time your engine cuts out. This is likely a power supply problem, and the car will turn itself off sporadically. For these Accord model years, a recall is in effect. Contact a dealership to have the ignition switch replaced.
How to reset my Honda Accord after changing an alarm?
Turn the key to the unlock position. Turn the key to the lock position. Turn the key back to the unlock position. The alarm should now be disabled. Start your Honda Accord’s engine and allow the vehicle to run for at least 10 minutes. This will allow the Accord to reset the alarm.
How do you change the battery in a Honda Accord?
Lester Moorman, If possible charge your battery 12.2V+ or change it, as this could continue happening. Try alarm rest procedure below. Insert the ignition key in the Accord’s driver-side door lock. Turn the key to the unlock position. Turn the key to the lock position. Turn the key back to the unlock position.
What to do if your Honda Accord alarm keeps going off?
To fix a faulty hood latch sensor, open your hood and look for a little plunger that has a wire on it. It should be on the outside edges near the headlights. Once you find it, disconnect it and wait to see if this solved the problem. Figure 1. Circled in red is the hood latch, and where you should be able to locate the sensor. Figure 2.
Why is the resistor on my Ford Escape not working?
For example, as you can see in this photo, the blower motor resistor in this Ford Escape has failed due to corrosion. If the resistor shows no visual damage, the resistance between terminals must be checked and compared to specifications. If the resistance is out of specs, the resistor must be replaced.
Why does my blower resistor keep going bad?
Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem.
What are the symptoms of a bad heater motor resistor?
Symptoms of a Bad or Failing Heater Blower Motor Resistor. 1 1. Blower motor stuck on one speed. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower 2 2. Blower motor does not work on certain settings. 3 3. No air from the vehicle’s vents.
When to replace a heater blower motor switch or relay?
When the motor gets old and tired it will draw more current through the wires than a new motor. It may still draw enough current to blow the fuse after it runs for a while. In that case, a motor replacement is in order. Step 1: Disconnect the battery. Put on your safety glasses and disconnect the battery at the negative cable.
What happens when you replace a blower motor resistor?
In this case, the heater and air conditioning system may still function normally pushing the cold or hot air out of the vent beside the speed. The resistor needs to be replaced with a new one in order to restore its function. Another common symptom of a faulty blower motor resistor is that the blower motor only works at slow-speed.
When the motor gets old and tired it will draw more current through the wires than a new motor. It may still draw enough current to blow the fuse after it runs for a while. In that case, a motor replacement is in order. Step 1: Disconnect the battery. Put on your safety glasses and disconnect the battery at the negative cable.
What happens when you change the fuse on a heater blower?
If the fuse is blown, replace it and then try the blower. If the fuse blows right away, your car may have a bad blower motor or some other problem in the system. If the blower works when you change the fuse, you may not be out of the woods yet. When the motor gets old and tired it will draw more current through the wires than a new motor.
How do you replace a fan switch on a heater?
Replacing the fan switch begins by removing the knob. Most of the time the knob just pulls off, but sometimes it’s a little more tricky. Carefully inspect the knob all around using your inspection mirror to look underneath.
What to do if your heater fan relay is not working?
Put everything back together the way it came and re-program the code into the radio if needed. If you’ve checked the fuse panel, and the fan motor doesn’t run at all, or if it runs only on the lower speeds, the blower motor relay may be at fault. Relays are used to carry electrical loads that are too large for conventional switches.
How can I tell if my blower motor resistor is faulty?
Another symptom of a faulty blower motor resistor is no air from the vehicle’s vents at all. Power to the blower motor is fed through the blower motor resistor, so if it fails or has any issues power can be cut off to the motor.
What does the blower motor resistor do in a car?
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. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor.
How many ohms does a blower motor resistor need?
According to the service manual, it must be around 4-5 ohms. In our case the ohmmeter shows open circuit, which means the resistor has failed. Sometimes, a blower motor resistor might fail due to problems with the blower motor itself.
Another symptom of a faulty blower motor resistor is no air from the vehicle’s vents at all. Power to the blower motor is fed through the blower motor resistor, so if it fails or has any issues power can be cut off to the motor.
How does an A / C blower motor resistor work?
Blower Motor Resistor Testing. An A/C blower motor resistor uses resistance to control the speed of the blower motor. Many blower resistors control current to the blower motor in all speeds except high. In high speed the resistor is bypassed and power is fed to the motor directly from the switch.
If your vehicle is displaying any of the symptoms above, or you suspect that your blower motor resistor may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the component should be replaced.