Outside Air Temperature Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs (see HOW TO CHECK FOR DTCS WITH THE HDS ).

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 outside air temperature sensor terminals No. 1 and No. 2 with the specifications shown in the graph; the resistance should be within the specifications.

Fig 1: Measuring Resistance Reading Between Outside Air Temperature Sensor Terminals No. 1 And No. 2
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 ).