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Home >> Toyota >> 2023 >> Venza Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> ECM >> Removal [10/2022 - ] >> Caution / Notice / Hint
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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
Auxiliary battery terminal is disconnected/reconnected Reset back door close position Power Back Door System Refer to INITIALIZATION [07/2020 - ]
Replacement of ECM Perform Vehicle Identification Number (VIN) registration DTC is output Refer to REGISTRATION [07/2020 - ]
Update ECU security key Vehicle Control History (RoB) are stored Refer to UPDATE ECU SECURITY KEY [07/2020 - ]
NOTE:
  • If the ECM has been struck or dropped, replace it.
  • Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

    Refer to REGISTRATION [07/2020 - ]

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.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Lane Tracing Assist System Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more. Refer to INITIALIZATION [07/2020 - ]
Pre-collision System
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Power Door Lock Control System
  • Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch. Refer to INITIALIZATION [07/2020 - ]
Air Conditioning System After the ignition switch is turned to ON, the servo motor standard position is recognized. -