2002 mazda mpv air conditioner fan control module problem?

SOURCE: 2004 mazda mpv- rear heater fan only works on high

My bet is that there's a relay at fault... but first: have you checked the fuses? the high blower speed draws a lot of power, so sometimes it's fused separately from the other speeds. This means that your fuse for the slow blower speeds could be blown. Also, because theblower draws so much power, you'd need a HUGE switch to switch it directly, so they use a low-power switch inside the car, and a relay (usually under the hood, but sometimes under a seat (check your owner's manual) to do the heavy work. These are often split the same way, with the high blower on one, and the slow on the other. These are the things that are easier to check, but it could just be that the switch is bad. Mid 90s Land rovers and Range Rovers have the same problem, where the only blower speed that works is HIGH, making the cabin sound like a wind tunnel... Just the switch. The switch can be a pain to replace if you do it yourself, but do check the fuses first, and see if you can find the relays. if the fuses are okay, and you find the relays, try to find the one that's for the fan and swap it out, it shouldn't be more than 3-4 dollars from an auto parts store, just bring in the old one to match it, or swap it for another relay that's nearby and has the same pins. If the swap works, just remember to get another relay, because the one you "borrow" from another circuit could be the door locks or the headlights or something else important....

SOURCE: my mazda mpv 2002 run rought and sometimes the

run scanner for trouble codes, some auto parts stores will do this for free

SOURCE: why is my mpv flooded

have someone scan the vehicle with a scanner and look at the coolant temperature sensor temperature if it shows -34 degrees, that is negetive 34 degrees then replace the coolant temp sensor.