On the ohm meter when the readings are specified as infinity its as if the meter doesn't see anything, it should not read for example:0.00 It should have something to indicate infinity (check your manual for scale readings). 0 readings mean just that ..zero. but it is NOT infinity. The readings you posted leads me to believe that the positive and negative leads were reversed giving a negative reading. Please re-check :) There is also another test to do on the idle solenoid by using a 9v battery. Connect the battery to the soleniod and see if the solenoid motor works, if it works properly the plunger should extend outwards, then you reverse polarity and see if the plunger retracts. This will indicate if there any dead spots on the IAC motor. Here's a great link to show you how to test your sensors.
YouTube - Auto Repair: Idle Speed Control - Testing and Replacing
YouTube - Auto Repair: M.A.P./Vacuum Sensors - Testing and Replacing (1 of 2)
YouTube - Auto Repair: Oxygen Sensors - Testing and Replacing (1 of 2)
Please post your readings of the MAP sensor ,IAC , Oxygen sensor.
please post back your readings.