Test NTC-19A: Checking Intake Air Temperature Sensor

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For component location and wiring diagram, see WIRING DIAGRAMS article.

Turn ignition on, engine off. Using scan tool, read and record Intake Air Temperature (IAT) sensor value. Remove IAT sensor. Using a thermometer, read temperature inside IAT sensor opening. Go to next step.
If IAT sensor value is not within 10 degrees of thermometer reading, replace IAT sensor and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies. If IAT sensor value is within 10 degrees of thermometer reading, reinstall IAT sensor. IAT sensor is operating properly. Test passed.