Tundra 4WD V8-4.7L (2UZ-FE) (2003)
Evaporator Case: Testing and Inspection
Component Inspection
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged clean them with compressed air.
2. CHECK FITTING FOR CRACKS FOR SCRATCHES
If necessary repair or replace.
3. INSPECT THERMISTOR RESISTANCE
a. Place the thermistor in cold water and while changing the temperature of the water, measure resistance at the connector and at the same time,
measure temperature of the water with a thermometer.
b. Compare the 2 readings on the chart.
If resistance value is not as specified, replace the thermistor.