Connect GDS with Diagnostic Connector.
Select "Current Data" mode and monitor "Auto defogger humidity sensor" parameter.
Check frequency or the value of auto defogger humidity sensor signal is changed on the scantool by increasing or decreasing humidity near the defogger sensor.
Specification : Refer the specifications in Fig.1)
(%RH) | DUTY RATE(%) | (%RH) | DUTY RATE(%) |
30±6%RH | 30±6% | 70±6%RH | 70±6% |
40±6%RH | 40±6% | 80±6%RH | 80±6% |
50±6%RH | 50±6% | 90±6%RH | 90±6% |
60±6%RH | 60±6% |
Fig.1) %RH of auto defogger sensor according to Humidity
Is the measured value within the specification ?
![]() | ▶ 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. |
![]() | ▶ Substitute with a known-good auto defogger sensor and check for proper operation. If the problem is corrected, replace auto defogger sensor and then go to "Verification of Vehicle Repair" procedure. |