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Section 36 (Engine Control System (Service Information)): ECM: Installation: Installation

WARNING: This page is about a different car, the 2010 Lexus GS 450h. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSTALL ECM 
      Fig 1: Identifying ECM Lower Bracket & Screws
      GTY130987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the ECM to the ECM lower bracket with the 2 screws.

      Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf) 

      2. Fig 2: Connecting ECM Connectors & Lower Levers
      GTY126072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the 2 ECM connectors.
      1. Connect the 2 connectors to the ECM and lower the 2 levers.
        NOTE:

        Make sure that the 2 levers are securely lowered.

      3. Fig 3: Locating ECM With Bracket & Nuts
      GTY126420Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the ECM with bracket with the 2 nuts.

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

  2. INSTALL HYBRID VEHICLE CONTROL ECU 
      Fig 4: Identifying Hybrid Vehicle Control ECU, Lock Lever & Connectors
      GTY131911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Make sure that the lock lever is raised 90° before connecting the connectors. Failure to do this may cause the lock lever and terminals to break.
      • Do not twist the wire harness when connecting the connectors.
    1. Connect the 2 connectors to the hybrid vehicle control ECU and push each lock lever down to lock the connectors.
      2. Fig 5: Identifying Hybrid Vehicle Control ECU, Bracket, Nut & Screws
      GTY146880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the ECU with the 2 screws.

      Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf) 

    3. Install the bracket with the 4 screws and nut.

      Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf) 

      for screw

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

      for nut

      4. Fig 6: Identifying Hybrid Vehicle Control ECU, Wire Harness & Clamp
      GTY147434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Attach the 3 wire harness clamps.
    5. Attach the side of the wire harness clamp labeled A to the wire harness.
  3. INSTALL RADIATOR RESERVOIR ASSEMBLY 
      Fig 7: Identifying Radiator Reserve Tank, Inverter Drain Hose, Bracket & Bolts
      GTY146879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the reservoir with the 2 bolts.

      Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 

    2. Connect the inverter drain hose to the bracket.
  4. INSTALL ENGINE ROOM NO. 1 RELAY BLOCK COVER 
  5. INSTALL ENGINE ROOM SIDE COVER LH  See step  32
  6. INSTALL COOL AIR INTAKE DUCT SEAL  See step  34
  7. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  8. PERFORM REGISTRATION  . Refer toINSTALLATION - Step 8
  9. RESET MEMORY  . Refer toINSTALLATION - Step 9
  10. PERFORM INITIALIZATION 
    1. Perform initialization. Refer toINITIALIZATION .
      NOTE:

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

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