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Home >> Acura >> 2012 >> TL Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control >> Humidity/In-Car Temperature Sensor Test >> Humidity Sensor Test
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Humidity Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs (see HOW TO CHECK FOR DTCS WITH THE HDS  ).
  1. Remove the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT  ).
  2. Connect the humidity/in-car temperature sensor 4P connector.
  3. 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 terminal No. 3 with the connector connected.
    Fig 1: Measuring Voltage Between Terminals With (+) Terminal And (-) Terminal With Connector Connected
    G08071070Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 2: Humidity Sensor Graph
    G08071071Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. If the voltage is not as specified, replace the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT  ).
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