DTC 233: Refrigerant Temperature Sensor Circuit
WARNING: This page is about a different car, the 1997 Mercedes-Benz C280 and 1997 Mercedes-Benz C230. However, it is still accessible from the selected car via links, so may be relevant.
Connect socket box and 5-connector test cable to ACC push-button control unit left connector. Ensure right connector is disconnected. See Figure. Connect ohmmeter negative lead to socket box terminal No. 23 and positive lead to terminal No. 21. See REFRIGERANT TEMPERATURE SENSOR CIRCUIT SPECIFICATIONS . If resistances are not as specified, check wiring and refrigerant temperature sensor. See Figure.
REFRIGERANT TEMPERATURE SENSOR CIRCUIT SPECIFICATIONS
| Temperature °F (°C) | Specifications |
|---|---|
| 68 (20) | 13,000 Ohms |
| 104 (40) | 5500 Ohms |
| 122 (50) | 3700 Ohms |
| 140 (60) | 2500 Ohms |
| 158 (70) | 1800 Ohms |