Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2010 Scion xB AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Coolant Temperature Sensor: Removal: Removal

DRAIN ENGINE COOLANT . Refer to REPLACEMENT - Step 1
REMOVE AIR CLEANER ASSEMBLY

Fig 1: View Of Mass Air Flow Meter Connector And Wire Harness
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the mass air flow meter connector.
2. Separate the wire harness.
3. Separate the No. 1 vacuum switching valve.
  
  Fig 2: View Of Vacuum Switching Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Disconnect the ventilation hose.
  
  Fig 3: View Of Fuel Vapor Feed Hose And Ventilation Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Separate the No. 2 fuel vapor feed hose.
6. Loosen the No. 1 air cleaner hose clamp, unlock the air cleaner assembly clamp and remove the air cleaner cap sub-assembly with No. 1 air cleaner hose.
  
  Fig 4: View Of Air Cleaner Hose Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Remove the air cleaner filter element sub-assembly.
8. Separate the wire harness.
  
  Fig 5: View Of Air Cleaner Case Sub-Assembly Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Remove the 3 bolts and the air cleaner case sub-assembly.
REMOVE ENGINE COOLANT TEMPERATURE SENSOR

Fig 6: Identifying Engine Coolant Temperature Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the engine coolant temperature sensor connector.
2. Using SST, remove the engine coolant temperature sensor and gasket.
  - SST: 09817-33190

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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