| 1. | Remove the outside air temperature sensor. |
| 2. | Dip the sensor in ice water, and measure the resistance. Then pour warm water on the sensor, and check for a change in resistance. |
| 3. | Compare the resistance reading between the No. 1 and No. 2 terminals of the outside air 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 out side air temperature sensor. |