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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Battery Management Systems >> Hybrid Battery Control System (Service Information) (1 Of 2) >> HV RELAY ASSEMBLY (for NICKEL METAL HYDRIDE BATTERY) >> Installation [04/2018 - 08/2020] >> Procedure

Installation [04/2018 - 08/2020]: Procedure

  1. INSTALL HV BATTERY JUNCTION BLOCK ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Install the HV battery junction block assembly to the HV battery with the 4 nuts.

      Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) 

      NOTE:

      If the HV battery junction block assembly has been struck or dropped, replace it with a new one.

    2. Connect the HV battery junction block assembly connector.
      NOTE:

      Make sure that the connectors are connected securely.

    3. Engage the 2 claws to install the wiring harness protector.
    4. Connect the HV battery junction block assembly connector.
      NOTE:

      Make sure that the connectors are connected securely.

    5. Engage the 2 claws to close the wiring harness protector.
    6. Engage the clamp.
    7. Connect the HV battery junction block assembly connector.
      NOTE:

      Make sure that the connectors are connected securely.

    8. Connect the electric vehicle battery plug assembly with the bolt.

      Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) 

  2. INSTALL UPPER HV BATTERY COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 3

  3. INSTALL NO. 1 HYBRID BATTERY EXHAUST DUCT 

    Refer to PROCEDURE - Step 15

  4. CONNECT FLOOR WIRE 
    WARNING:

    Be sure to wear insulated gloves.

    1. Engage the 2 clamps to connect the floor wire.
    2. Connect the HV battery junction block assembly connector.
    3. Connect the electric vehicle battery plug assembly connector.
    4. Engage the clamp.
  5. CONNECT HV FLOOR UNDER WIRE 

    Refer to PROCEDURE - Step 19

  6. INSTALL NO. 1 HV BATTERY COVER PANEL RH 

    Refer to PROCEDURE - Step 20

  7. INSTALL REAR SEAT CUSHION LEG SUB-ASSEMBLY 

    See step  4

  8. INSTALL REAR UNDER COVER 

    See step  5

  9. INSTALL REAR UNDER SIDE COVER LH 

    See step  6

  10. INSTALL REAR DOOR SCUFF PLATE LH 

    Refer to PROCEDURE - Step 28

  11. INSTALL REAR UNDER SIDE COVER RH 

    See step  8

  12. INSTALL REAR DOOR SCUFF PLATE RH 

    HINT: 

    Use the same procedure as for the LH side.

  13. INSTALL NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY 

    Refer to INSTALLATION [04/2018 - 08/2020]

  14. INSTALL SERVICE PLUG GRIP 

    Refer to INSTALLATION [04/2018 - ]