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Section 20 (Engine Control System (Service Information)): ECM: Installation: Installation

WARNING: This page is about a different car, the 2009 Lexus GS 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSTALL ECM 
      Fig 1: Identifying ECM Box And Name Plate
      GTY104298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Install the ECM in the ECM box with the name plate facing the inside of the vehicle.
      • Make sure that there is no foreign matter on the gasket surface of the ECM box.
      • Insert the stud bolt in the vehicle rear side to the ECM first.
      • Make sure that the stud bolts are securely installed into the front and rear bolt holes.
    1. Install the ECM to the ECM box.
      2. Fig 2: Identifying Tightening Sequence Of ECM Nuts
      GTY105182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be sure to first tighten the nut on the vehicle rear.

    2. Install the 2 nuts in the order shown in the illustration.

      Torque: 5.5 N*m ( 56 kgf*cm, 49 in.*lbf) 

  2. CONNECT WIRE HARNESS 
      Fig 3: Locating Connector Holders
      GTY100560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Attach the 2 claws.
    2. Connect the 2 connector holders.
    3. Connect the 6 connectors.
  3. INSTALL ECM BOX COVER 
      Fig 4: Locating ECM Box Cover Bolts
      GTY105180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Make sure that the wire harness does not get caught between the parts.

    1. Install the cover with the 3 bolts.

      Torque: 5.5 N*m ( 56 kgf*cm, 49 in.*lbf) 

  4. INSTALL ENGINE ROOM SIDE COVER LH  . Refer to INSTALLATION - Step 133
  5. INSTALL COOL AIR INTAKE DUCT SEAL  . Refer to INSTALLATION - Step 135
  6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  7. PERFORM REGISTRATION 
    1. Perform registration Refer to PRECAUTION .
  8. RESET MEMORY 
    1. Reset memory for 2WD Refer to INITIALIZATION .
    2. Reset memory for 4WD Refer to INITIALIZATION .
  9. PERFORM INITIALIZATION 
    1. Perform initialization Refer to INITIALIZATION .
      NOTE:

      Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

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