Humidity Sensor Test

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before testing the sensor, check for HVAC DTCs (see GENERAL TROUBLESHOOTING INFORMATION )

Remove the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT )
Connect the humidity/in-car temperature sensor 4P connector
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode Measure the voltage between the terminals with the (+) probe on terminal No 2 and the (-) probe on the No 3 terminal with the connector connected

Fig 1: Humidity/In-Car Temperature Sensor Voltage Graph
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the voltage is not as specified, replace the humidity/m-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT )