Test NTC-19A: Checking Intake Air Temperature Sensor
NOTE:
When performing this test, DO NOT allow more than 5 minutes between measuring temperature of intake air temperature sensor with scan tool and measuring the air temperature on inside of intake manifold with temperature probe.
NOTE:
Vehicles equipped with a 2.7L engine are equipped with a Manifold Absolute Pressure (MAP) sensor and a separate Intake Air Temperature (IAT). Vehicles equipped with a 3.2L and 3.5L engine are equipped with an Intake Air Temperature/Manifold Absolute Pressure (IAT/MAP) sensor. For this test, IAT/MAP will be identified as IAT sensor.
- Turn ignition on with engine off. Using scan tool, read and record Intake Air Temperature (IAT) sensor reading. Turn ignition off. Remove IAT sensor. Using a temperature probe, measure air temperature inside sensor opening in intake manifold.
- If IAT sensor reading is within 10°F (-12°C) of air temperature probe reading, reinstall IAT sensor. IAT sensor is functioning properly. Test is complete. If IAT sensor reading is not within 10°F (-12°C) of air temperature probe reading, replace IAT sensor. Perform TEST VER-2A: ROAD TEST VERIFICATION .