Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Evaporator Temperature Sensor / Switch: Testing and Inspection

1. Be sure that A/C switch is off before inspection. Leave the evaporator until its surface temperature equals the surrounding temperature.
2. Remove the under cover, glove compartment, and glove compartment cover.
3. Disconnect the evaporator temperature sensor connector.
4. Set the fan switch at manual 4th speed.
5. Set the REC/FRESH switch to RECIRCULATE.
6. Measure the temperature at the blower inlet.







7. Measure the resistance between terminals A and B of the evaporator temperature sensor connector (male).
- If the resistance is not in the shaded zone indicated in the graph, replace the evaporator temperature sensor.