I have never seen a spec for resistance.  The ECM use the voltage signal for
processing and the input voltage is regulated to 5.0 vdc by the ECM.  In the
closed position, the TPS should read less than 1.0 volt depending on the
vehicle.  It will linearly rise to about 4.5 vdc at about 3/4 of full othrottle
opening.  These readings are not exact as the ECM constantly reads and ajuust
it's own calibration while the engine is in operation.  It sets up on it's base
voltage at the idle position.  About the only test I have seen work if you
suspect a TPS problem and no fault code is set is to use an analog meter with a
needle.  Slowly operate the TPS thru it's entire range while looking for any
interuption or disturbance of the needle movement.  It should be dead smooth and
pretty near linear.  If you have a scope, you may be able to better observe any
variance in output.  Again, it use the variable voltage signal for reference.
You can probably calculate the values but, the idle setting is going to vary
depending on exactly how the engine was adjusted for base idle speed.  The top
end will be constant at the break point.  A real time readout from the ECM
should give a percentage of throttle opening which is the internally calculated
value it uses for engine operation.

Be patient.  There are a couple of guys on here that are pretty sharp on them.
Maybe I haven't muddied the explaination too much for them to salgage for you.

Lugnut