Evaporator Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE LOWER FINISH PANEL (See LOWER FINISH PANEL )
REMOVE EVAPORATOR TEMPERATURE SENSOR
1. Disconnect the connector.
2. Using a screwdriver, pull out the sensor with bracket plate.
  HINT:
  
  Tape the screwdriver tip before use.
  
  Fig 1: Disconnecting Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Release the 2 claws and remove the sensor from bracket plate.
  
  Fig 2: Removing Evaporator Temperature Sensor From Bracket
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT EVAPORATOR TEMPERATURE SENSOR RESISTANCE
1. Place the sensor in cold water, and while changing the temperature of the water, measure resistance at the connector and at the same time, measure temperature of the water with a thermometer.
  
  Fig 3: Inspecting Evaporator Temperature Sensor Resistance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Compare the 2 readings on the chart.
  If resistance value is not as specified, replace the sensor.
  
  Fig 4: Resistance Reading Comparison Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL EVAPORATOR TEMPERATURE SENSOR
1. Install the sensor in bracket plate and 2 claws.
  
  Fig 5: Installing Evaporator Temperature Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Push in the sensor with the bracket plate.
3. Connect the connector.
INSTALL LOWER FINISH PANEL . See LOWER FINISH PANEL .

Fig 6: Pushing In Sensor With Bracket Plate & Connecting Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002