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Intake Air Temperature Sensor

Disconnect sensor connector. Using an ohmmeter, measure resistance between Intake Air Temperature (IAT) sensor terminals. See INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (ME7)  and INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (DENSO)  table. If resistance is not as specified, replace sensor.

INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (ME7)

Temperature - °F (°C) Voltage Resistance - Ohms
0 (0) 4.30 15,931
50 (10) 3.94 9672
68 (20) 3.50 6068
86 (30) 3.0 3923
104 (40) 2.5 2603
INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (DENSO)

Temperature - °F (°C) Voltage Resistance - Ohms
32 (0) 1.55 6000
50 (10) 2.01 4000
68 (20) 2.62 2450
77 (25) 2.13 2000
86 (30) 2.00 1800