Component Inspection

Component Inspection

Check evaporator sensor
1. Ignition "OFF"
2. Disconnect evaporator sensor.
3. Measure resistance between terminal "1" and "2" of evaporator sensor

Specification : Refer the specifications in fig. 3)








Fig. 3) Specifications : Resistance value as a function of temperature.
4. Is the measured resistance within specifications in fig. 3) ? (tolerance limits ± 3%)





Check A/C Control Unit
1. Engine "ON"
2. Disconnect evaporator sensor.
3. Measure voltage between terminal "4" of A/C Control Unit and chassis ground

Specification : Approx. 5V




4. Is the measured voltage within specifications ?