Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

Fig. 5 Connecting ohmmeter between electrical connector terminals 9 and ground:

Fig. 6 Temperature & resistance value graph:

1. Connect an ohmmeter between electrical connector terminals 9 and ground, Fig. 5.
2. Refer to graph, Fig. 6, for temperature and resistance values.
3. Suitable test temperatures and resistance values are as follows:
a. 14°F at 32000-53000 ohms.
b. 68°F at 8500-11500 ohms.
c. 176°F at 770-1320 ohms.
4. If incorrect temperature or resistance values are obtained, repeat test at the temperature sensor.