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Home >> Toyota >> 2019 >> Mirai >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Power Distribution - Service Information >> Main Body Ecu >> Removal [11/2018 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the main body ECU (instrument panel junction block assembly) removal/installation are shown below.

NECESSARY PROCEDURE AFTER PARTS REMOVED/INSTALLED/REPLACED

Replacement Part or Procedure Necessary Procedure Effect/Inoperative when not Performed Link
Replacement of main body ECU (multiplex network body ECU) Code registration (Immobilizer system)
  • Wireless function
  • Smart function
  • Does not change to on (READY)
Refer to REGISTRATION [06/2015 - ]
Disconnect cable from negative (-) auxiliary battery terminal Perform steering sensor zero point calibration Lane Control System Refer to INITIALIZATION [11/2018 - ]
Parking Support Brake System*1
Pre-collision System
Lighting System (EXT)

*1: When performing learning using the Techstream.

NOTE:

After the power switch is turned off, the navigation receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 90 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.