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Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during ECM removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Replacement of ECM The Vehicle Identification Number (VIN) or frame number registration DTC P0630-51 is output Refer to REGISTRATION [02/2024 - ]
ECU configuration - Refer to ECU CONFIGURATION [02/2024 - ]
Update ECU security key Vehicle Control History (RoB) are stored Refer to UPDATE ECU SECURITY KEY [02/2024 - ]
Heavy Knock History: 
  • Save history
  • Write history
- Refer to REGISTRATION [02/2024 - ]

HINT: 

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

ITEMS FOR WHICH LEARNING IS COMPLETED BY DRIVING THE VEHICLE

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Front Camera System Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more. Refer to INITIALIZATION [02/2024 - ]
ITEMS FOR WHICH LEARNING IS COMPLETED BY OPERATING THE VEHICLE NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Air Conditioning System After the ignition switch is turned to ON, the servo motor standard position is recognized. -
Power back door system Fully close the back door by hand.
HINT: 
Initialization is not necessary if the above procedures are performed while the back door is closed.
Refer to INITIALIZATION [02/2024 - ]


COMPONENTS (REMOVAL) 

Fig 1: ECM Removal Components
GTY1223381Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
1 PRECAUTION - See step  1 - -
2 DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL - - - -
3 TCM 89530C See step  3 - -
4 ECM 89661 See step  4 - -
5 NO. 2 ECM BRACKET 89668 - - -
6 ECM BRACKET 89667 - - -