3.
Measure Frequency between terminal "3" and "5" of Humidity sensor
a.
Specification : Refer the specifications in fig3)
Engine "ON"
Connect Humidity Sensor.
Measure Frequency between terminal "3" and "5" of Humidity sensor
Specification : Refer the specifications in fig3)
Is the measured frequency within specifications in (fig5)? (tolerance limits ±5%)
※Check if frequency value is inversely proportional to humidity while increasing humidity.
YES
Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Substitute with a known-good Humidity sensor and check for proper operation. If the problem is corrected, replace Humidity sensor and then go to "Verification of Vehicle Repair" procedure.
