Outside Air Temperature 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 outside air temperature sensor (see Outside Air Temperature Sensor Replacement )
Dip the sensor in ice water, and measure the resistance Then pour warm water on the sensor, and check for a change in resistance
Compare the resistance reading between terminals No 1 and No 2 of the outside air temperature sensor with the specifications shown in the graph, the resistance should be within the specifications

Fig 1: Resistance And Outside Air Temperature Sensor Graph
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the resistance is not as specified, replace the outside air temperature sensor (see Outside Air Temperature Sensor Replacement )