Coolant Temperature Sensor (Cts)
WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.
If a coolant sensor-related code is present, see appropriate G - TESTS W/ CODES article. An out-of-calibration sensor may not set a trouble code. Use following procedure to test sensor calibration. Disconnect coolant temperature sensor connector. Measure resistance between sensor terminals. Resistance should be high when engine is cold and drop as engine warms up. See CTS RESISTANCE VALUES .
CTS RESISTANCE VALUES
| Temperature °F (°C) | Resistance (Ohms) |
|---|---|
| 212 (100) | 177 |
| 158 (70) | 467 |
| 100 (38) | 1800 |
| 68 (20) | 3520 |
| 23 (-5) | 12,300 |
| 0 (-18) | 25,000 |
| -40 (-40) | 100,700 |