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There are three fuses involved. A 10amp and 15amp that powers the control, and a 30amp that actually powers the blower motor control processor and the motor itself. Do you have power on all three circuits ?
The first thing I recommend is checking the fuse, then the electrical connections. If the fuse is good then I'd check the blower power wires, usually near the bottom of the glove box, making sure they are properly seating in their socket. You can further troubleshoot at this connection to see if voltage is getting to the blower motor. Use a DC volt meter, or a 12 volt tester light. The switch, relay, and blower resistor are other components in this circuit. Best of luck!
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