Outside Air Temperature Sensor Test

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

Fig 1: Measuring Outside Air Temperature Sensor Resistance

Courtesy of AMERICAN HONDA MOTOR CO., INC.