Where is the transistor for the blower motor - 2007 Kia Spectra LX Sedan

Volvo Forum • 2000 v70 Blower Motor/Resistor Question - Matthews ...

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Jan 8, 2011 - 14 posts - ‎1 author I replaced my blower motor and resistor - with the help and ... On ECC the transistor power stage (referred to as resistor) will shut off blower if the ... the current to blower(voltage level to blower) is controlled by the ECC control unit. ... Hook the negative side of the car battery (or other 12 V source) to the fan. Volvo Forum • S40 fan speed erratic
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All how to replace blower motor in volvo s70 v70 c70 XC70 ...

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www.youtube.com/watch?v=frZl49p2quk
Sep 5, 2007 - Uploaded by volvoproject All how to replace blower motor in volvo s70 v70 c70 XC70 ....Awesome video....took 15 mins to install blower motor andresistor on my .... Most time was spent trying to remove theelectrical wires from around the blower properly (there ... I was suprised how much bigger the fan is irl than it looked in this vid!

power flows from fuse to blower motor relay. From there it flows to blower motor. Blower motor receives ground from two different places depending on which speed you choose. If you choose high speed, it gets ground through the blower motor high relay. If you choose any other speed, it gets ground through the power transistor below the right side of the dash. The power transistor regulates fan speed by pulsing ground on and off based on the speed you've set. Power transistor is most common failure point in these systems

This is one of two failures either the front power transistor or the blower motor. If the power transistor is failed, then the blower motor has to be replaced also. This is a very common failure.

Not True. I have a 2004 S60 and a std features is that the blower motor will run from 10 minutes to an hour after the engine has been turned off, This is to dry the evaporator in the dash and avoid musty odors.

If it drains your battery dead there are possible issues; 1) a weak battery that needs replacing or 2) a faulty power stage/transistor unit ont he blower fan.

The transistor unit has power and ground and a digital signal from the control unit. When the transistor sticks, the the blower will not stop when the ignition is turned off.

Check fuse #14(10amp) located in fuse box under driver steering wheel behind the lower dash cover.
Check fuse#12(40amp) located in fuse box under hood.
Replace fuse(s) if any are blow.

If fuse are good.Check blower and transisto next.
Do steps 1-3 with turn key on
1. Unplug connector and check for 12v at the blue/white wire at the blower motor(2-NAT)
-if there's no voltage you might have a bad relay or open in the wire
-if there's about 12v, go to step 2
2.Plug connector for blower motor and unplug connector for blower transistor(4-NAT). Take a jumper wire and jump the blue/black wire to body ground.
-if blower does not run, replace blower motor
-if blower motor runs, go to step 3
3.check the black wire at(4-NAT) for good ground.
-if you have good ground, then replace blower motor transistor.
good luck

The blower motor resistors or fan switch itself are defective.
High speed has no resistors B+ goes straight to blower motor.

Under the glove box:

Disconnect the blower motor power transistor electric connector (the transistor is far over to the left, with a curly wire coming down to it.)

Remove the blower motor power transistor mounting screws the remove the transistor.

Disconnect the electrical connector from the blower motor (slightly to the right of the motor).

Remove the blower motor mounting screws and then remove the blower motor assembly.
(there are, I believe, 3 screws; 1 just below the connector; 1 above the connector, higher up, and slightly to the left; and 1 over to the left of the blower motor)

Remove the circlip from the blower motor shaft to release the fan from the motor.

Installation is reverse.

Hope this helps you deal with it.

Most of the time this is a bad "blower motor resistor". It is easy to replace. You will find your behind the glove box in the ac/heater (evaporator) housing. Below is a pic of the resistor as it is seen from behind the glove box. 1. resistor assembly. 2. harness 3. fasteners (2). 4. lower edge of glove box. (open).

under the hood above and to the left of the right strut tower(passenger side)

well, the blower motor doesn't have a transistor, and if it were something else then it would run on low or high.

the best option is to replace the blower motor.