So, I was driving my 2005 LR3 and heard a noise and then smelled that familiar sound of burned wire where there was once A/C coming out of the vent.
I changed the resistor, blower fan, and relay - still nothing. What else is there? I am checking the fuses just in case it is something that simple, but figured I should get my question out here in the forums.

Thank you,

 

OK, a few questions to help us help you.

Have you checked to make sure there is 12 volts power to the blower motor? Start there and work your way back to the battery one element at a time.

Turn the car on.
Set the HVAC controls to make the fan runs on high.
Use a volt meter to confirm there is or is not 12 volt power to the blower motor.
Check that there is voltage going to the "load side" of the relay. One side should always have power and the other gets power when the Body control unit (BCU) tell the relay to close.
Check to make sure the BCU is telling the relay to close by checking fore power at the solenoid side of the relay.
Check to make sure one side (or both sides) of the fuse has power.

Lastly is all these fail to produce a fault, check the codes, you may see an HVAC control head communications failure or unit failure.

Just a few thoughts, I am sure there is more to look at but this should get you started.

Jeff


Were you able to check the ODBII codes?

Jeff