Oil Pressure Switch: Removal

REMOVE FRONT WHEEL RH (for 4WD)
REMOVE ENGINE UNDER COVER ASSEMBLY (for 2WD) (See REMOVAL )
DISCONNECT FRONT FENDER LINER RH (for 4WD)
REMOVE FRONT FENDER APRON SEAL RH (for 4WD) (See REMOVAL )
REMOVE ENGINE OIL PRESSURE SWITCH ASSEMBLY
1. Disconnect the wiring harness protector. (w/ oil cooler)
  
  Fig 1: Identifying Wiring Harness Protector (W/ Oil Cooler)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the oil pressure switch assembly connector.
3. Using a 24 mm deep socket wrench, remove the oil pressure switch, (w/o oil cooler)
  
  Fig 2: Using Deep Socket Wrench To Remove Oil Pressure Switch (W/O Oil Cooler)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Using a 24 mm deep socket wrench, remove the oil pressure switch, (w/ oil cooler)
  
  Fig 3: Using Deep Socket Wrench To Remove Oil Pressure Switch (W/ Oil Cooler)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002