Blower only works on the lower speeds (no high speed)

Good evening,

When you have power on the ground side of the blower motor, it indicates you have no ground so the blower motor will not work.

The blower resistor is what grounds the blower motor. I would replace the blower resistor as the relay in the resistor is what grounds it and is not working.

https://www.2carpros.com/articles/how-to-check-wiring

By the way, I saw your question on the other site.



Roy

this is the wiring diagram i am using and yours is different i do not know why. please can you use these for me?

If you recall, your first post was for a 2000 not a 2002. the wiring diagram I sent you was for the 2002.

The controls are still the same.

I attached a diagram as well.

Check both the fuses listed in your diagram for power on both sides.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check the orange wire at the blower resistor for power with the key on.

It still indicates you need a blower resistor.

Roy