2005 Scion tC AutomaticFACTORY OEM SERVICE PROCEDURE

ECM (2AZ-FE): Replacement

NOTE: When disconnecting the battery terminal, initialize the following system after the terminal is reconnected.
SYSTEM SPECIFICATIONS

System Refer To
Power window control system INITIALIZATION
Sliding roof system INITIALIZATION
  1. DISCONNECT BATTERY NEGATIVE TERMINAL 
  2. REMOVE GLOVE COMPARTMENT DOOR ASSY (See  REPLACEMENT  ) 
  3. REMOVE ECM 
    1. Disconnect the wire harness clamp.
    2. Disconnect the 5 ECM connectors.
      Fig 1: Disconnecting Wire Harness Clamp
      G03072183Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt and screw, then remove the ECM.
      Fig 2: Removing ECM
      G03072184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 screws, then remove the ECM bracket No. 1.
      Fig 3: Removing ECM Bracket No. 1
      G03072185Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 2 screws, then remove the ECM bracket No. 2.
      Fig 4: Removing ECM Bracket No. 2
      G03072186Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL ECM 
    1. Install the ECM bracket No. 2 with the 2 screws.
      1. Torque: 3.0 N.m (30 kgf.cm, 27 in.lbf) 
      Fig 5: Installing ECM Bracket No. 2
      G03072187Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the ECM bracket No. 1 with the 2 screws.
      1. Torque: 3.0 N.m (30 kgf.cm, 27 in.lbf) 
      Fig 6: Installing ECM Bracket No. 1
      G03072188Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Align the turn prevention, then install the ECM with the bolt and screw.
      1. Torque: 
      2. 5.0 N.m (50 kgf.cm, 44 in.lbf) for bolt 
      3. 3.0 N.m (30 kgf.cm, 27 in.lbf) for screw 
      Fig 7: Installing ECM
      G03072189Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the 5 ECM connectors.
    5. Install the wire harness clamp.
      Fig 8: Installing Wire Harness Clamp
      G03072190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL GLOVE COMPARTMENT DOOR ASSY 
  6. CONNECT BATTERY NEGATIVE TERMINAL 
    1. Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf) 
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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