Temperature Sending Unit Test
WARNING: This page is about a different car, the 1991 Acura Legend and 1991 Acura Integra. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect Yellow/Green wire from coolant temperature sending unit. With engine cold, measure resistance between sending unit terminal and ground. Warm engine and measure change in sending unit resistance. See COOLANT TEMPERATURE SENDING UNIT RESISTANCE table.
COOLANT TEMPERATURE SENDING UNIT RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 133 (56) | 142 |
| 185-212 (85-100) | 32-49 |