Humidity Sensor In Fresh Air Intake Duct -G657-, Checking
NOTE:
The Humidity Sensor in Fresh Air intake Duct -G657- -3- needs about 2 minutes to reach its operating temperature after the ignition is switched on. During the warm-up phase, the function of the humidity sensor in fresh air intake duct is limited.
The function of the Humidity Sensor in Fresh Air intake Duct -G657- can only be checked via the "Guided Fault Finding". The measured values of the Humidity Sensor in Fresh Air intake Duct -G657- are evaluated there via the "read measured values" function and are compared to the temperature and humidity measured at the component location of the Humidity Sensor in Fresh Air intake Duct -G657-. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.