Evaporator Temperature Sensor Test

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

Remove the evaporator temperature sensor (see EVAPORATOR TEMPERATURE SENSOR REPLACEMENT )
Dip the sensor in ice water, and measure the resistance between its terminals.

Fig 1: Measuring Resistance Between Evaporator Temperature Sensor Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Then pour warm water on the sensor, and check for a change in the resistance.
Compare the resistance readings with the specifications shown in the graph below; the resistance should be within the specifications.

Fig 2: Identifying Resistance & Temperature Graph
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the resistance is not as specified, replace the evaporator temperature sensor (see EVAPORATOR TEMPERATURE SENSOR REPLACEMENT ).