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.

2007 Scion tC Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Control System (2AZ-FE): ECM: 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 GLOVE COMPARTMENT DOOR (See REMOVAL )
REMOVE ECM
1. Disconnect the wire harness clamp.
2. Disconnect the 5 ECM connectors.
  
  Fig 1: Locating Wire Harness Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the bolt, screw and ECM.
  
  Fig 2: Locating ECM With Bolt And Screw
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the 2 screws and No. 1 ECM bracket.
  
  Fig 3: Locating No. 1 ECM Bracket Screws
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the 2 screws and No. 2 ECM bracket.
  
  Fig 4: Locating No. 2 ECM Bracket Screws
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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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