Author Question: All of the following are approved methods for diagnosing an ECT (engine coolant temperature) sensor ... (Read 321 times)

dalyningkenk · **on:** Aug 13, 2021

Question 1

A typical IAT or ECT sensor reads about 3000 ohms when tested using a DMM. This resistance represents a temperature of about ________.
◦ -40° F (-40° C)
◦ 70° F (20° C)
◦ 120° F (50° C)
◦ 284° F (140° C)

Question 2

All of the following are approved methods for diagnosing an ECT (engine coolant temperature) sensor EXCEPT ________.
◦ Scan tool
◦ Digital multimeter (DMM)
◦ Observing resistance values at a specified temperature
◦ Substituting a variable resistor