2005 Kia Sedona Non working cooling fan

Thanks Saturntech9, That is what I was thinking do to the fact the relay is not being triggered to close the fan relay switch. Would you know how to test the sensor with a meter. I know there cheap but I would like to know if its bad before shot gunning it with new parts. A pin out of the readings would help tons, i've not been able to find the data sheet online.
Thanks for your time and info,
Roy

Thanks Saturntech9 for your input, it helped.
It was the water Temp Sensor, changed it out, works fine now. Did notice this sensor turns on the fan at a little bit higher temp than before, not much but a little bit, like 10-15 deg higher but still just a touch above the half way mark on the temp gauge in the dash. Thought I would note that so others know its ok to be a bit different temps with the new sensor. With the A/C on both fans work and the motor never heats past just below half way on the heat gauge in the dash. Over all easy fix once you get past figuring out whats going on. Cost- under 20 bucks to fix, saves spending 3,000 on a new motor if you let it go. I must say I own three Kias all bought new, Rio Cinco, Sedona and a Sportage 4wd. I've only had a few things that needed work. One a/c unit died in two months, dealer fixed no charge. Two batteries, one power steering pump and now this Sensor. So I would say as long as you take care of the Kias, there very good cheap transport. I will say all have there timing belts changed before every 60k miles 120k, 180k. Reg maint, oils changes every 3k or so and they just keep going. Very happy with all my Kia's. Only wish is that Kia would go to a gear timing and be rid of the timing belts and those issues forever.
Once more, Thanks Saturntech9

Roy