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Refrigerant Pressure Sensor / Switch, HVAC > < Coolant Temperature Sensor / Switch HVAC|Testing and Inspection
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Evaporator Temperature Sensor / Switch: Testing and Inspection

1. REMOVE GLOVE COMPARTMENT

2. INSPECT THERMISTOR RESISTANCE

a. Disconnect the connector.
b. Measure resistance between terminals.

Standard resistance: 1,500 Ohms at 25° C (77° F)

If resistance is not as specified, replace the thermistor.

3. REMOVE THERMISTOR

4. INSPECT THERMISTOR RESISTANCE

a. Place the thermistor in cold water, and while changing the temperature of water, measure resistance at the connector and at the same time,

measure temperature of water with a thermometer.

b. Compare the 2 readings on the chart.

If resistance value is not as specified, replace the thermistor.

Refrigerant Pressure Sensor / Switch, HVAC > < Coolant Temperature Sensor / Switch HVAC|Testing and Inspection