Evaporator Temperature Sensor Test

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Dip the sensor in ice water, and measure the resistance between its terminals.

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

Fig 2: Evaporator Temperature Sensor Resistance Graph
Courtesy of AMERICAN HONDA MOTOR CO., INC.