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With the ignition and fan switches turned on check for power at fan motor.If you have power at the motor then wiggle and maybe pull on the blower motor resistor and if fan comes on just fix the connection.But when you check for power at the blower motor and don't have power then check the fan relay if it does'nt click when you turn it on then its faulty.
Check heater fuse.
If fuse good - could be a failure of the blower fan motor or blower control switch.
If fuse bad - bad blower fan motor could have blown the fuse.
DO: check fuse, then blower motor.
Pricing: new blower motor: Duralast PM270 $43.99
new heater control switch: Duralast SW229 $46.99 (without
I'd expect your blower resistor to be good - when they fail, the blower only will work on HIGH setting.
Check the fuse first thing. If the fuse it good then either the blower motor speed control switch, blower motor resistor pack, or the blower motor itself is bad. Normally the speed control switch rarely goes bad. If some of the speeds did not work prior to total failure then the resistor pack is bad. If that is not the case then apply 12 volts directly to the blower motor to see if it is good. If it runs suspect the resistor pack as the culprit.
If you have Digital controls first check your fuses. Then if they are OK the blower controller is bad. This part is under the hood in the ductwork.
It sticks out of the firewall and usually is behind the engine where a heater hose comes out of the intake manifold. It has 2 screws and 1 electric connector. The only good thing about the whole deal is "When you can get the electric connector off the old part you can attach it to the new part to see if it works".
You can turn on the blower and the fan will work if the controller was the problem. You do not need to start the engine. Then you finish the repair. Most likely the heater hose will have to be moved temporarily and then you can get to the screws and switch the parts.
My best price was $20 at a Salvage yard. Expect much more for a new part and usually $50 for most used parts.
If the fuse is blown for the blower then there is a short, that is not an answer, go to the blower and check to see that the blower motor connector has 12 volts to it when the blower is set to high speed on control, if it does then u need a new blower motor, if it doesn't then the control switch is defective or the blower motor speed control resistor is defective.