Hyundai Repair: hyundai, hyundai repair, bench test

Question
2000 elantra
I need to verify that the cooling fan relay works
I don't have a Haynes to see proceedure, is there a way to verify if the motor is good (the fan motor)? just jump
how to check the relay itself?
is the fan suppose to run whenever the ac is on?
on my volvo I jumped some spots on the relay, also I borrowed a relay from another system,
any ideas?
Thanks
HT is there a way to see your previous answers, I hate to trouble you with questions you may have already answered somewhere
Thank You
Liam

Answer
Both fans should run if the a/c is on.  Hyundai refers to one as the Condensor Fan and the other as the Radiator Fan.  I never remember which has which designation, so I simply pull the fuse for each and see which one stops turning.

Probably the easiest thing to do is to swap relays from other locations in the box.  So if you have just one fan not working, you can probably switch the relays between the two and see if this switches which fan runs.  (I expect both fans will use the same relay, but I'm not 100% certain of this).  Otherwise, to bench test the relay, you'll need to apply power and ground to the coil side of the relay and see if you have continuity through the contact side.

Typically, when I'm checking such a system, I start with checking the fuses first.  If they're okay, I then move to the connector for the fan itself.  If blown, replace the fuse.  If it blows again, there's a short in the cirucit, most likely in the fan motor itself.  To test for certain try one more time with the fan motor unplugged.  If the fuse blows with the motor plugged in but not when unplugged, the problem is in the fan motor.

At the motor connector, install a test light (or voltmeter) between the connector terminals.  If the lamp lights normally (or voltmeter shows typical system voltage), then the fan motor has proper power and ground and the problem is in the fan motor itself.

You can view my previous answers here:
http://en.allexperts.com/q/Hyundai-Repair-815/indexExp_73295.htm

The above will locate most problems.  If not, then you'll need to start investigating the relays and whether the coil side of the relay is properly energized.  I'd encourage you to register for a free account at www.hmaservice.com, where you can look at the electrical schematics for the vehicle (although I see this particular one is very grainy).