No.2 Amount Of Air Blown From Vents Does Not Change: Notes

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE - DESCRIPTION & POSSIBLE CAUSE

2	Amount of air blown from vents does not change.
DESCRIPTION	Malfunction in blower system.
POSSIBLE CAUSE	Malfunction in blower relay, blower motor, resistor, fan switch, related wiring harnesses (Step 1) Blower unit malfunction (Steps 2-4)