914 Airbox temp sensor
1st: the orange tcu light was blinking right after main key to on position (not run)
indicating sensor/wiring/servo motor problems???
2nd: checked servo motor operation ...moves from 8:00 to about 12:00 ...so "OK" then check all wiring connections ..."OK"
3rd: setup the TLR46 software that matches my TCU (741) .... went to monitor.... turned main key to on... everything reads normal except airbox temp... it reads "00c" should read about "16c" if I unplug the sensor the reading goes to "50c"
4th: checked the resistance of the sensor reads about 105.8 which should be equal to about 16c... so pretty sure the sensor is "OK" Engine has about 6 hours on it and was changed from 1 airframe to a newer airframe ran fine before the switch
5th: Disconnected main harness from TCU and sensor, checked continuity to ground from both pins at sensor plug.....none... wire "OK"?? checked continuity to ground at the temp sensor pins....none..."OK"
Any ideas ?? Thanks
Jay