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Heater Core Case|Service and Repair > < Evaporator Temperature Sensor / Switch|Testing and Inspection|Page 4704
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Heater Core Case: Testing and Inspection

INSPECTION

1. INSPECT EVAPORATOR

a. Check evaporator fins for blockage.

If the fins are clogged, clean them with compressed air.

NOTE:  Never use water to clean the evaporator.

b. Check fitting for cracks or scratches.

If necessary, repair or replace.

2. INSPECT HEATER RADIATOR

Inspect fins for blockage.
If the fins are clogged, clean them with compressed air.

3. INSPECT THERMISTOR
4. INSPECT EXPANSION VALVE

Heater Core Case|Service and Repair > < Evaporator Temperature Sensor / Switch|Testing and Inspection|Page 4704