| 1. | Remove the in-car temperature sensor. |
| 2. | Check for a change in resistance by heating the sensor with a hair drier or cooling the sensor in a cool cup of water. |
| 3. | Compare the resistance reading between the No. 1 and No. 2 terminals of the in-car temperature sensor with the specifications shown in the graph; the resistance should be within the specifications.
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| 4. | If the resistance is not as specified, replace the in-car temperature sensor. |