| 1. | Remove the evaporator core and the evaporator temperature sensor. |
| 2. | Dip the sensor in ice water, and measure the resistance between its terminals.
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| 3. | Then pour warm water on the sensor, and check for a change in resistance. |
| 4. | Compare the resistance readings with the specifications shown in the graph; the resistance should be within the specifications.
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| 5. | If the resistance is not as specified, replace the evaporator temperature sensor. |