Intake Air Temperature (IAT) Sensor
Turn ignition off. Locate IAT sensor on intake manifold. Unplug connector from sensor. Measure resistance between sensor terminals at temperatures specified. See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE table. Replace sensor if resistance is not as specified.
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (1)
| Temperature - °F (°C) | Ohms | |||
|---|---|---|---|---|
| Motronic 5.2 System | ||||
| -22 (-30) | 20,000-30,000 | |||
| 14 (-10) | 8300-10,600 | |||
| 68 (20) | 2300-2700 | |||
| 104 (40) | 1000-1300 | |||
| 140 (60) | 565-670 | |||
| 176 (80) | 295-365 | |||
| 194 (90) | 240-260 | |||
| Trionic System | ||||
| -22 (-30) | 20,000-30,000 | |||
| 14 (-10) | 7000-11,400 | |||
| 68 (20) | 2100-2900 | |||
| 104 (40) | 1000-1300 | |||
| 140 (60) | 565-670 | |||
| 176 (80) | 295-365 | |||
| 194 (90) | 240-260 | |||
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