Engine Control System - Circuit Tests, Component Removal, Inspection & Installation: ECM: Removal

REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY (See REMOVAL )
REMOVE BATTERY SERVICE HOLE COVER LH (See 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.
NOTE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected (see INITIALIZATION ).
- After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
REMOVE BATTERY SERVICE HOLE COVER (See REMOVAL )
REMOVE SERVICE PLUG GRIP (See REMOVAL )
REMOVE AIR CLEANER INLET COVER SUB-ASSEMBLY (See REMOVAL )
REMOVE ENGINE ROOM SIDE COVER LH (See REMOVAL )
REMOVE ENGINE ROOM ECU COVER
NOTE:
- Wipe off any water on or around the ECU cover.
- Perform these procedures in a dry place away from rain, etc.
- Do not allow water to enter the ECM through its connectors areas, screw areas, etc.
1. Remove the 3 bolts and ECU cover.
  
  Fig 1: Locating ECU Cover And Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE HYBRID VEHICLE CONTROL ECU
1. Disconnect the 4 ECU connectors.
2. Remove the 2 nuts and ECU
  
  Fig 2: Locating Hybrid Vehicle Control ECU And Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DISCONNECT NO. 2 CONNECTOR HOLDER
1. Disconnect the 2 engine wire connectors.
2. Disconnect the 2 claws with the connector holder.
  
  Fig 3: Locating No. 2 Connector Holder
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE ECM
1. Disconnect the 6 ECM connectors
2. Remove the 2 nuts and ECM.
3. Remove the 4 screws and 2 ECM brackets from the ECM