For schematics of the starter circuit, check in at HMAservice.com.
There all info can be found.
You are electrically knowlegable, so you must be able to check voltages at the starter motor, starter relay etc. Also you could interconnect the relay switch points when relay is removed, to battery to let the motor run.
Also take into account, the voltage at the starter motor only activates it's internal power relay, which connects the high power line from the battery to the internal motor. The little starter relay in the fusebox is not able to switch the high power to that motor. So if that high power line is broken or bad nothing will happen.
Also, if the internal relay in the motor itself is bad, nothing will happen.
Also check the ground wires, for the high starter power could be stopped by ground resistance. Measure voltages.
Good luck,
Paul

 

If I understand this correctly the little relay in fuse box is only an enable signal I know that relay cannot pass the current needed to turn the starter. Does that signal go to starter solenoid which engages bendix drive that inturn engages starter internally. Or does that signal go to another relay? I've already checked all connections and connectors all are clean and in very good condition. Starter works great when bench tested, no internal failure. Spins freely with no unusual noise or any indication of binding. Battery is new. All heavy current draw connections are clean and tight. Also all grounds that I've found are good and tight. I haven't bench tested the little start relay, no markings or diagram on relay, so I'm not sure which set of pins is the relay coil. Once I determine relay coil pins I'll be able to bench test to tell if relay is passing voltage when coil is energized.
Paul, Thanks for your help and advice. Now I'm going to find that start circuit diagram.

 

You're correct, the fusebox relay only activates (with low current) the starter solenoid, which switches with high current the bendix and motor.
You can measure the relay, the 12v coil measures resistance, the switch infinite resistance (unpowered).
When you put 12 volts to the coil of the relay it should switch and you measure short at the switch pins.
Another way of doing: interchange that relay with another relay of the same colour in the fusebox. Remember where you got it.
The same colour relays all are the same make. There are two colours. One type with single pole switch, the other with double throw switch.
So the other type cannot be interchanged.
In this case it's a single pole switch relay.
If the other relay was ok, you can check now if the previous starter relay is functional and if the starter relay position now works...
If it still doesn't work something else is at fault, like fuses, wiring, whatever.
Good luck,
Paul

 

I went to the HMA Service Site and found the Start Circuit diagram but cannot open the diagram. When I click on the diagram link I get a blank page with a little red x inside a box. Clicking on this red x in the box Does Nothing. I'm running Windows 7 Operating System, and IE-7 browser would this have an effect on opening the wiring diagram. The site System Requirements doesn't list Windows 7 operating system?
I just went back to HMA site and while looking around I discovered that I cannot open any of the wiring diagrams. Can anyone shed light on this problem?

 

You need to install additional SVGview, SVGICC programm, can be found on the internet. Look at the HMAsite for button "requirements"
Had the same problem here.
If you're lucky it works and you will be able to see the schematics.
This is a major issue at that site.
I myself did it by printing the schematics to a PDF file, by means of a pdf printwriter. Even without the screen image.
Everything came out then.
Good luck,
Paul

 

Paul, once again, thanks for your help & advice. I'll look into the SVG software issue. I have PDF conversion software which will convert almost any format to PDF. Never thought that I might be able to convert to PDF without an image. If all else fails I'll try printing in PDF without image.
Arnold

 

This Hyundai service site is amazing. Use another computer or update yours because it has everything on every model:

https://www.hyundaitechinfo.com/

And you don't need to be a tech to use it.

 

SVG issue resolved. Have some excellent wiring diagrams. This forum has the best troubleshooting resources I've ever encountered. Kudos to the Forum. Now I just have to isolate the problem...... Arnold