Troubleshooting

Flowchart-Evaporator Temperature Sensor (Part 1 Of 2):

Flowchart-Evaporator Temperature Sensor (Part 2 Of 2):

Self-diagnosis indicator light E comes on: Indicates a problem in the evaporator temperature sensor circuit. Use a digital multimeter (KS-AHM-32-003) to check it.

The evaporator temperature sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases as the evaporator outlet air temperature increases.