Why does my fan only work on high?
Resistor module replacement Most car manufacturers use a series of resistors to make the heater blower motor run at different speeds. And when one or more of these resistors burn out, you’re usually left with only one heater blower motor speed—high. The resistor module is easy and inexpensive to replace.
How do I know if my fan speed switch is bad?
Symptoms of a Bad or Failing Blower Motor Switch
- Switch only works on certain settings. One of the first symptoms commonly associated with a bad or failing blower motor switch is a switch that only works on certain settings.
- Switch is stuck.
- Broken knob.
Is the fan blower switch on the Toyota Tacoma failing?
The fan blower switch failing on the Toyota Tacoma (2005-present) is a common issue with this model of truck. Below describes the back story and the five step process to bring the unit back to life. The synopsis: There is a TSB (Toyota service bulletin) regarding this issue, T-SB-0149-11: HVAC Blower Motor Only Operates On High.
Where is the fan switch on a Tacoma?
The connector, fan, wiring harness and such can be found in the passenger floor area, just under the glove box. On the left, you can see a connector with 4 wires sticking out of it. That is where the resistor for the fan is.
Why is the AC Light not working on my Tacoma?
If you turn the switch, hit the AC button and the AC light doesn’t come on, your problem may not be fixed by the below. General – Make sure to unhook the negative terminal of the battery. You don’t want the fan coming on or shorting the resistor pack.
What to do if your fan switch is not working?
If you gently pry back the tab and pull down the connector, you will be able to see how your connector is doing. You may also have to release the black tab holding the wiring harness to the fan. The connector may be snug in the resistor pack. Be very gentle when pulling it out. Once you have the connector out, look at it.