Could be a bad switch, blower motor, resistor or bad ground/wiring problem....test for power at the motor and a good ground with switch and ignition on to see if power is getting through and go from there. Some import cars wire the circuit backwards which is the power is sent to the motor first and the grounding circuit goes through the resistor and fan switch.
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The switch and relay are good. The blower blower speed is limited to low. Can get a higher speed occasionally with bumps or even flipping the lever from inside to outside air.
A procedure for getting to the fan wiring that is different than the procedure for replacing the motor would be helpful. No garage and outside temps in the single digits prompts me to find a way.
Currently I open lower a window just enough and let suction do the rest.
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