I need some help figuring out why my A/C blower isn't blowing. I don't want to take my Rover to a shop if I can fix the problem myself.

Here's what I've already tried:
- Checked all fuses under hood and under driver's side dash.
- Tested A/C relay under the hood by swapping it with the horn relay. Horn still works, A/C still doesn't.
- Pulled out and cleaned blower motor, made sure it rotates freely.
- Opened the inspection port on the blower, checked it out, gave it a quick blow out to remove dust.
- Ran a self-diagnostic on the A/C. No fault codes.
- Checked all wires and connectors under the dash, starting at the blower motor and working out from there. Nothing loose, nothing damaged.

What am I missing? What have I forgotten? Am I going to have to take her in and pay out the nose for a diagnosis and repair?

 

First thing I would have done would be to run jumper wires from the battery to the blower motor to see if it spins when 12V is directly applied. No motor operation in that case = new motor. If the motor spins when 12V is applied, check the harness going to the motor for voltage, and for ground continuity.

 

Look at this thread, it leads back to a fix I posted years ago.

https://landroverforums.com/forum/di...roblems-19235/

It includes some additional tips while testing. It will likely be a faulty fuseblock. Usually the interior one has a bad connection between the fuse on the front and the connector on the back. It will commonly read correct voltage but will not draw enough amperage under load. It appears only the two blower fuses (other is rear air, if equipped) are affected. The other fuses on the fuseblock seem to be okay. I also had a dead power pin on the fuseblock under the hood. A bypass to fuselink 4 is detailed in the thread mentioned.

 

I thought I had seen something about a fuseblock issue when looking through the forum years ago, but wanted to wait for someone else to chime in.

 

Thanks, guys. I will test the blower motor by connecting it to the battery, and I will read through the linked thread and continue troubleshooting... I'm not very good with electronics, but I'm learning as I go.

 

There is normally a blower motor resistor to control the variable speed of the motor. If that goes bad, the fan will not work either. I don't know where it's located on a Rover. Some are under the hood, cowling, under the dash, etc. You could try a google search and see what you come up with.
Good luck!

 

I covered that in the link I posted. If the blower doesn't work at max speed, then it's not the resistor pack. There is no resistor for max speed. If you do have max speed and a problem with one or more of the other speeds then it is very likely the resistor pack.

 

I too had the bad solder joint on the fusebox. It can be fixed (I have done mine) if you are good with a soldering iron - or you can replace it with one from a parts truck (several vendors on here).

 

I took the easy way out. I ran a positive wire with an in line fuse from the battery directly to the connector at the blower and that fixed it. It has been working for around a year now with full functionality ie different speeds and what not.

 

Still struggling with this, and I finally found my multimeter to start checking connections and relays...
So here's where I am: The blower motor has good continuity. the blower motor is not getting power. Both fuse blocks are getting power, and all fuses are good. The relay under the hood is getting power. Inder the dash, I have power at the white connector with the black and brown/red wires. I do not have power at the blue and black connector with the blue and brown wires and the black/orange and white/red wires. I have power at the relay with the black and black/orange wires. I do not have power at the relay with the brown/red and white red wires...

Can anyone help me narrow it down from here?