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Home >> Toyota >> 2021 >> Mirai XLE >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Fuel Cell (FC) Control System - Service Information (6 Of 7) >> FC Control Ecu >> Removal [11/2021 - 12/2022] >> Procedure

Removal [11/2021 - 12/2022]: Procedure

  1. PRECAUTION 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [11/2021 - 12/2022]

  2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to REMOVAL [11/2021 - 12/2022]

  3. REMOVE UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 5

  4. REMOVE FC CONTROL ECU 
    1. GTY1001704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Lift up the lever to detach the lock, and disconnect the 2 FC control ECU connectors from the FC control ECU.
        NOTE:

        When disconnecting connectors, make sure that foreign substances such as mud or water droplets do not adhere to them.

      2. Remove the 2 bolts and FC control ECU.
        NOTE:

        If the FC control ECU is dropped or subjected to a strong impact, replace it with a new one.

  5. REMOVE NO. 1 FC CONTROL ECU BRACKET 
    1. GTY1001890Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE NO. 2 FC CONTROL ECU BRACKET 
    1. GTY1001887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002