NTC-17A: Checking IAT Sensor
NOTE:
When performing this test, DO NOT allow more than 5 minutes between measuring temperature of Intake Air Temperature (IAT) sensor with scan tool and measuring the air temperature inside of intake manifold with temperature probe.
Turn ignition on, engine off. Using scan tool, read and record IAT sensor value. Remove IAT sensor. Using a thermometer, read temperature inside IAT sensor opening. If IAT sensor value is within 10 degrees of thermometer reading, reinstall IAT sensor. IAT sensor is operating properly. Test is complete. If IAT sensor value is not within 10 degrees of thermometer reading, replace IAT sensor. Perform TEST VER-2A.