Engine Coolant Temperature Sensor: Removal

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
REMOVE AIR CLEANER ASSEMBLY (See REMOVAL )
DISCONNECT ENGINE WIRE
1. Disconnect the 2 clamps of the engine wire.
  
  Fig 1: Disconnecting Clamps Of Engine Wire
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE ENGINE COOLANT TEMPERATURE SENSOR
1. Disconnect the sensor connector.
  
  Fig 2: Disconnecting Sensor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the sensor and gasket.
  
  Fig 3: Removing Sensor And Gasket
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002