Chrysler Repair: 2008 PT Cruiser Base Model will not start, radiator fan, starter relay

Question
We have been having this issue with our car as of recent.  About 3 weeks ago it wouldnt start after shopping.  I heard the radiator fan running the entire time.  I checked the coolant and added more to it.  Still wouldnt start. I pulled the fuse for the fan relay and the radiator fan stopped.  had my brother inlaw help jump start the car.  that worked. Plugged the fuse back in and went home.  When i turned the car off the fan turned off.  No issues until this last few days.  I had to jump start the car again.  Radio comes on with no problem, lights and all that work, just the car will not start.  When i turn the key it clicks and then nothing.  The battery is less than a year old and i dont see anything wrong with the engine.  I read in a few places it might be the cable going from the battery to the starter.  I am not sure as to what i need to do to correct this issue.  I dont think its the alternator, battery or starter. but then again i dont know for sure.  Any ideas what it might be?

Answer
Hi Nicholas,
If the jump start approach seems to be effective in getting the starter motor to work, then I would believe that the issue is related to the battery or a battery wires. I would start at the -post of the battery, remove the clamp and then follow the wires on the that clamp to where they attach to be body and the engine. Check that those attachment points are cleanly connected and firmly attached. Then do the same thing with the +post clamp. Then check the clamps themselves to be sure that they are shiney as are the posts and that the wires attached to both clamps appear to be well connected and not corroded. Then reconnect the +post clamp the the battery, then finally connect the -post clamp to the battery. Then test the function of the starter motor. If you still get a click (is it loud and coming from the starter, or is it only soft and coming from the relay in the power distribution box?) then it is either the starter relay or the starter motor, or possibly the battery is not fully charging due to an issue with the alternator not putting out a high enough voltage. Do you have a voltmeter and if so what is the voltage at the battery as it sits, and was is it once you get the engine started.
That would be my initial approach, assuming that you can get another jump start (if needed) after checking out both of those main battery clmaps and their wires.
Please 'rate' my answer (see below).
Thanks,
Roland