if you pul the ecu out, when cold with the ignition on yuo shoul dget across pins 11 and 31 about 3 volts dc (with the ecu connected to the loom obviously) or with the ecu disconnected, when cold, 3.75K ohm across the same pins, this valve when increasing in temp (80dgc) should go to 0.3 volts or 380 ohm with the ecu disconnected. you will really need to remove the cover from the multiplug on the ecu to geta multimeter probe onto th pins and get someone to watch what it goes to when on boost.