Ambient Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE AMBIENT TEMPERATURE SENSOR
1. Disconnect the connector.
2. Using a clip remover, pull out the sensor from bumper reinforcement.
  
  Fig 1: Removing Ambient Temperature Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT AMBIENT TEMPERATURE SENSOR RESISTANCE
Measure resistance between terminals at each temperature as shown in Fig 2 .

Fig 2: Inspecting Ambient Temperature Sensor Resistance (Table) (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If resistance is not as specified, replace the sensor.

Fig 3: Inspecting Ambient Temperature Sensor Resistance (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL AMBIENT TEMPERATURE SENSOR
1. Push the sensor in bumper reinforcement.
2. Connect the connector.
Fig 4: Installing Ambient Temperature Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002