Section 13 (Engine Control System (1UR-FSE) - Circuit Tests And Repair Information): ECM: Installation

WARNING: This page is about a different car, the 2008 Lexus GS 460. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL ECM
1. Install the ECM with the 2 nuts.
  Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)
  
  Fig 1: Locating Nuts And ECM
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECT WIRE HARNESS
1. Connect the 6 ECM connectors.
  
  Fig 2: Locating ECM Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the No. 4 connector holder.
INSTALL ENGINE ROOM ECU COVER
1. Install the engine room ECU cover with the 3 bolts.
  Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)
INSTALL V-BANK COVER SUB-ASSEMBLY (See INSTALLATION )
INSTALL ENGINE ROOM SIDE COVER LH (See INSTALLATION )
INSTALL COOL AIR INTAKE DUCT SEAL (See INSTALLATION )

Fig 3: Installing No. 4 Connector Holder
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
PERFORM RESET MEMORY
NOTE: Perform the RESET MEMORY (AT initialization) when replacing the automatic transmission assembly, engine assembly or ECM (See INITIALIZATION ).

HINT:

Initialization cannot be completed by only removing the battery.