Component Inspection

Component Inspection

Check Humidity Sensor
1. Engine "ON"
2. Connect Humidity Sensor.
3. Measure Frequency between terminal "3" and "5" of Humidity sensor

Specification : Refer the specifications in fig. 5)













Fig. 3) Signal waves of Humidity sensor
Fig. 4) Frequency of Humidity sensor Measured by scantool
Fig. 5) Specifications : Frequency value as a function of Relative humidity.
4. Is the measured frequency within specifications in (fig. 5) ? (tolerance limits ± 5%)
**Check if frequency value is inversely proportional to humidity while increasing humidity.