Air Temperature Sensor
- To check air temperature sensor circuit of airflow meter, turn ignition off. Disconnect airflow meter. Measure resistance across airflow meter terminals No. 3 and No. 4 (Gray/Blue and Gray/Violet wire terminals).
- Compare resistance values with specification. Refer to the AIR TEMPERATURE SENSOR RESISTANCE . If values are incorrect, replace airflow meter.
AIR TEMPERATURE SENSOR RESISTANCE
| Air Temperature °F (°C) | Ohms |
|---|---|
| 14 (-10) | 8260-10,560 |
| 63-73 (17-23) | 2200-2700 |
| 117-127 (47-53) | 760-910 |
NOTE:
On 5 and 7 Series models with self-diagnostics, a short or open in the air temperature sensor will set a trouble code 44. If code is set, MCU will operate engine with preset air temperature value.