Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B3T3
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2020]
Title: HYBRID / BATTERY CONTROL: SERVICE PLUG GRIP: REMOVAL; 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during service plug grip 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
*: When performing learning using the Techstream.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM (for HV Model): CALIBRATION

Auxiliary battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane departure alert system (w/ Steering Control)

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): INITIALIZATION

Pre-collision system

Intelligent clearance sonar system*

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking assist monitor system

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM(for HV Model): INITIALIZATION

Panoramic view monitor system

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM (for HV Model): INITIALIZATION

CAUTION:

  • Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair manual.

    Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): PRECAUTION

  • To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.

NOTICE:

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1. CHECK FOR DTC

(a) Check for DTCs.

Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DTC CHECK / CLEAR

CAUTION:

  • Confirm that DTC P0AA649 (Hybrid / EV Battery Voltage System Isolation Internal Electronic Failure), P1C7C49 (Hybrid / EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure), P1C7D49 (Hybrid / EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure), P1C7E49 (Hybrid / EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure) or P1C7F49 (Hybrid / EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure) is not output before removing or installing the HV battery. If this DTC is output, perform troubleshooting for this DTC first.
  • To reduce the risk of electric shock, do not perform troubleshooting before checking for DTCs.

2. REMOVE LUGGAGE TRIM SERVICE HOLE COVER

Click here 2019 MY Avalon HV [04/2018 - 08/2019]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+ 2020 - 2021 MY Avalon HV [08/2019 - 08/2021]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+

3. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

Click here 2019 MY Avalon HV [04/2018 - 08/2019]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+ 2020 - 2021 MY Avalon HV [08/2019 - 08/2021]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+

4. REMOVE BATTERY SERVICE HOLE COVER

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: BATTERY COOLING FILTER: REMOVAL+

5. REMOVE SERVICE PLUG GRIP

CAUTION:

  • Be sure to wear insulated gloves.
  • Do not inspect or service the high voltage system with the service plug grip installed.
  • To reduce the risk of electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
  • To reduce the risk of electric shock, make sure to wait at least 10 minutes after removing the service plug grip to fully discharge the high voltage capacitor inside the inverter with converter assembly.
  • Keep the removed service plug grip in your pocket to prevent other technicians from accidentally installing it while you are servicing the vehicle.

NOTICE:

  • After removing the service plug grip, turning the power switch on (READY) may cause a malfunction. Do not turn the power switch on (READY) unless instructed by the repair manual.
  • Do not touch the terminals of the service plug grip.
  • If the service plug grip has been struck or dropped, replace it.

HINT:

Waiting for at least 10 minutes is required to discharge the high voltage capacitor inside the inverter with converter assembly.

(a) While wearing insulated gloves, rotate the handle of the service plug grip and remove the service plug grip as indicated by the arrows, in the order shown in the illustration.