While there might be relays related to other aspects of the HVAC system (like the AC compressor), a specific blower motor relay isn't typically a standalone component. If your blower motor isn't working, the problem is more likely to be one of the following:
* Blower Motor Resistor: This is a common point of failure. It controls the fan speeds.
* Blower Motor itself: The motor could be faulty.
* Fuse: Check the fuses related to the HVAC system in the under-hood fuse box and the interior fuse box (usually located under the dash).
* Wiring: A short or break in the wiring harness.
* HVAC Control Module: This module controls the blower motor and other aspects of the HVAC system. A faulty module can cause blower issues.
To diagnose the problem, you'll need to consult your owner's manual for fuse locations and diagrams or a repair manual specific to your 2001 Ford Focus. A multimeter will also be helpful to test the fuses, wiring, and the blower motor itself.