Blower motor fine. Can't locate the heater relay. Is it possible it could be the resistor. Are there any tricks to removing those three 7/32 bolts that hold the resistor unit in place, too tight against the firewall.
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Try banging on bottom of blower motor with your hand with switch in high position and key in the on position. If no bower motor action happens, check that fuse/relay is operational. If ok, suspect failure in heater motor or heater motor resistor
Here's a link to the blower motor resistor,these resistors control the blower motor speed,when they go out,they won't work or work on 1 or 2 speeds,autozone will take back if it doesn't solve problem.Easy to remove,they are located by blower motor,just remove electrical connector and 2 screws.Here's where the blower motor is.Here's the blower motor relay.
faulty blower motor resistor. The low and medium speed on blower motor is
controlled by resistor and its actual speed is high. So because resistor is not
working, blower motors actual speed which is high is working.
can be faulty blower motor or faulty blower motor resistor. Get the blower
motor inspected. If it's faulty it has to be replaced.
blower motor testing and replacing, check the link below: ----
Remove the insulator from the right side of the instrument panel.
Disconnect the connectors from the blower motor resistor and blower motor.
Loosen the two forward screws and remove the rear screw of the resistor assembly.
Remove the blower motor resistor assembly.
Install the blower motor resistor assembly. Install the rear screw and tighten the forward screws. Connect the electrical connectors to the blower motor and resistor assembly. Install the insulator under the right side of the instrument panel.
The Blower Motor Resistor is located on the passenger side firewall, not far from your A/C's H-Valve (or expansion valve), going inside of the vehicle. The blower motor resistor has a 4 or 5 way black connector plugged into it and this is the only visible portion of the Resistor you will see. Remove the wiring connector and remove the 2 or 3 screws with an 8 mm or 5/16" socket (8 mm and 5/16" are the same). Once the screws or fasteners are removed, just pull the blower motor resistor out of the firewall and if you look at it, it will have various coils of wire on it, sometimes it will show burnt coils, but you can always check the various coils with an Ohm-meter.
Aside from that, install the new Blower Motor Resistor and Voilà! Your inside Blower Motor should work just fine.
A brief note here, if your fan doesn't work when the fan switch is on High, then it's not the Blower Motor Resistor, but possibly the Blower Motor itself. Should this occur, please get back to me insofar as how to replace the blower motor and why the blower motor's wires have to be twisted...even with the new blower motor fan.
It located behind the dash on the Passenger side.
And yes you can easily do this yourself saving you alot of money! Have you first checked the Front Blower Motor Relay located in the IPM Relay and Fuse Box located inside the engine compartment? Remove the cover. The location identification is located on the back (inside) side of the Cover. You can switch-out a similiar size and shape Relay and check the operation. If the Blower now works then the Relay was bad and needs to be replaced. The Motor and Resistor cost alot more money than the Relay.
Before we do this: What is the Motor doing? Nothing? OR DOES IT WORK ON HIGH ONLY? If the Motor works on High only then it is not the Motor but the Blower (Fan) Motor Resistor. This is located near the Motor. It is identified by 3 to 4 wires going into it. Remove the two (2) retaining nuts/metal screws and remove. Disconnect the wiring connection and replace. I don't want you to replace the Motor and find out you wasted your money when it was the Resistor.
It could be also both the Motor and the Resistor.
Direction to remove/replace the Blower Motor:
1. Disconnect the Negative cable from the Battery and wait two minutes. This is to de-energize the Air Bag System which you will be working near.
2. Remove the Glovebox.
3. Remove the four (4) hex screws holding on the Blower Motor Cover.
4. Remove the three (3) nuts/screws holding in the Blower Motor. Make sure you support the Motor, as it will drop down.
5. Disconnect the electrical connection.
Installation is the reverse of the above.
Check operations before putting the Glove Box Back on.
I just solved this problem on my 06 H3. My fan just stopped working on all settings. My problem was the resistor pack. It internally shorted and burned the harness. Once you locate the parts it is only like a 30 min fix. Under the glove box is the blower motor. There is one red plug, that is for the resistor pack. Under that are two screws holding the resistor pack in. Check to see if the red plug is burned, if it is, replace it. Then replace the resistor. The harness to replace also has two other connectors at the blower motor(one for a relay that is beneath the blower motor and one that actually powers the fan). The harness (for an 06 H3) is part 25867517 List Price $28.68 and the resistor is part 10397098 List Price $37.72. Hope this helps..
P.S. The motor is a regulated ground don't apply power to this wire. The Brown wire is 12V+ and the Orange wire is regulated ground. Here is the diagram.