Test 14: Air Temperature Sensor
- Check the electrical connections on the sensor. Use procedures in BMW TEST KIT, L-JETRONIC PROCEDURES BROCHURE that comes with the BMW Service Test Kit, Test 4 to check Air Temperature Sensor values. If values are incorrect, remove connector from sensor and attach volt/ohmmeter. Check resistance between terminals 22 and 6 and compare with the specifications table. See the AIR TEMPERATURE SENSOR RESISTANCE Specifications table.
- If resistance values are correct, trace sensor circuit and repair wiring. If values are incorrect, replace Air Flow Sensor.
AIR TEMPERATURE SENSOR RESISTANCE SPECIFICATIONS
| Air Temperature °F (°C) | Resistance - Ohms |
|---|---|
| 66-70 (19-21) | 2280-2720 |
| 120-124 (49-51) | 760-910 |