Aspirator: Testing and Inspection

In - Car Temperature Sensor (B10/4), With Aspirator Blower:

Check in-car temperature sensor aspirator blower by placing a small piece of paper (arrow) approximately 1/2 inch square over in-car temperature sensor (B10/4) vent grille with ignition ON. If there is sufficient ventilation the paper will remain on the vent grille, if not check aspirator blower for voltage supply and function. The after-run time for the blower motor is greater than six seconds.