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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 >> Installation [12/2023 - ] >> Procedure

Installation [12/2023 - ]: Procedure

  1. INSTALL NO. 2 FC CONTROL ECU BRACKET 

    Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

  2. INSTALL NO. 1 FC CONTROL ECU BRACKET 

    Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

  3. INSTALL FC CONTROL ECU 
    1. GTY1002140Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Install the FC control ECU with the 2 nuts.

        Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

        NOTE:

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

      2. Connect the 2 FC control ECU connectors and lock with the lever.
        NOTE:
        • When connecting connectors, make sure that foreign substances such as mud or water droplets do not adhere to them.
        • Securely lock with the lever.
  4. INSTALL UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 178

  5. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to INSTALLATION [12/2022 - ]

  6. INITIALIZATION AFTER RECONNECTING BATTERY TERMINAL 

    HINT: 

    When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [12/2023 - ]