Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** would point toward the fan switch itself failing. Unplug the fan switch and jump the black wire to the light blue/white wire, this should cause fan to come on at high speed. If fan comes on at high speed then replace the fan switch. If it doesn't come on then you may have a couple problems. If it doesn't come on with wires jumped, leave wires jumped and disconnect the blower motor. At blower motor the light blue wire should have power and light blue/white wire should have ground. If both are good but blower isn't turning on replace the blower motor. Let me know if you have more questions or if there is anything else I can do to help. Thanks.