Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001RK28
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): VEHICLE CONTROL HISTORY; 2021 - 2022 MY Avalon HV [08/2020 -        ]

VEHICLE CONTROL HISTORY

VEHICLE CONTROL HISTORY (HYBRID BATTERY SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / HV battery / Utility / Vehicle Control History (RoB).

Powertrain > HV Battery > Utility

Tester Display

Vehicle Control History (RoB)

HINT:

  • If any of the conditions in the "Cause" column are met, data related to the Vehicle Control History item "Ready ON Prevention", "Hybrid/EV Battery Cooling Performance Decrement" or "Limit to Charge / Discharge Control Value by Hybrid/EV Battery" will be stored in the battery ECU assembly.
  • When the Vehicle Control History item "Ready ON Prevention" is stored, the vehicle condition will be as shown in the Symptom column.

Vehicle Control History

FFD Group

Code

Symptom

Cause

Vehicle Control History Data

Procedure

-

X0460

Hybrid/EV Battery Cooling Performance Decrement

History of poor HV battery cooling performance
  • Hybrid/EV Battery Temperature 1 to 6
  • Hybrid/EV Battery Cooling Fan Intake Air Temperature 1

2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): PROBLEM SYMPTOMS TABLE

03

X0540

Ready ON Prevention

Incorrect HV battery is installed

(Power switch does not turn on (READY).)
  • Hybrid/EV Battery Determination Signal 1
  • Hybrid/EV Battery Determination Signal 2

"Hi" is displayed for both of these items when they are normal.

If "Lo" is displayed for either item, the power switch cannot be turned on (READY) due to an incorrect HV supply stack sub-assembly having been installed.

Replace the HV supply stack sub-assembly with a correct one.

Incorrect ECM is installed

(Power switch does not turn on (READY).)

Number of Hybrid Battery Mismatch Judgment with Engine ECU

"0" is displayed for this item when it is normal.

If a value of "3" or higher is displayed for this item, the power switch cannot be turned on (READY) due to an incorrect ECM having been installed.

Check the part number and replace the ECM with a correct one.

Battery diagnosis request was ignored

(Power switch does not turn on (READY).)

Hybrid/EV Battery Check Status Light Request

If a value of "6" or higher is displayed for this item and no other conditions are preventing the power switch from being turned on (READY), the power switch cannot be turned on (READY) due to Battery Diagnosis not being performed and the vehicle being driven for a certain amount of time after "Have Traction Battery Inspected" was displayed on the multi-information display.

Perform Battery Diagnosis using the Techstream.

High voltage wire harness between HV supply stack sub-assemblies is disconnected

(Power switch does not turn on (READY).)

High Voltage Line between Stack Engaged

If "ON" is displayed for this item, the power switch cannot be turned on (READY) as the high voltage wire harness connecting 2 or more HV supply stack sub-assemblies is disconnected.

Inspect the high voltage wire harnesses connecting the HV supply stack sub-assemblies.

Excessive engine cranking requests when HV battery cannot be used

(Power switch does not turn on (READY).)

Number of Cranking when No Hybrid/EV Battery

If a value higher than "15" is displayed for this item, the power switch cannot be turned on (READY) as engine cranking operation requests have exceeded a threshold when the HV battery could not be used.

Repair the malfunctions indicated by the output DTCs and clear the DTCs.

Extremely low HV battery temperature judgment

(Power switch does not turn on (READY).)

Hybrid Battery Extremely Low Temperature Judgment

If "ON" is displayed for this item, the power switch cannot be turned on (READY) as the temperature of the HV battery is extremely low.

The values of "HV Battery Temperature 1 to 6" and "Hybrid/EV Battery Cooling Fan Intake Air Temperature 1" can be used as a reference.

Wait for the HV battery temperature to increase.

High HV battery cell voltage

(The power switch is slow to turn on (READY).)
  • Hybrid/EV Battery Stack 1 Cell Maximum Voltage
  • Hybrid/EV Battery Stack 2 Cell Maximum Voltage

Perform troubleshooting for any DTCs that are output.

Low HV battery cell voltage

(The power switch is slow to turn on (READY).)
  • Hybrid/EV Battery Stack 1 Cell Minimum Voltage
  • Hybrid/EV Battery Stack 2 Cell Minimum Voltage

Perform troubleshooting for any DTCs that are output.

11

X0570

Limit to Charge / Discharge Control Value by Hybrid/EV Battery

History of HV battery charge/discharge being restricted

If the temperature of the HV battery becomes approximately 40°C (104°F) or higher due to high ambient temperature, continuous driving under high load, clogged hybrid battery intake duct, etc., the HV battery current will be restricted.

In this case the value of WIN/WOUT will decrease and the engine will stop and start less frequently.
  • WIN Control Limit Power
  • WOUT Control Limit Power
  • Hybrid/EV Battery Temperature 1 to 6

    (Excessively high HV battery temperature: approximately 40°C (104°F) or higher)

  • Hybrid/EV Battery Cooling Fan Intake Air Temperature 1

    (If this value is high (approximately 38°C (100.4°F) or higher), due to high ambient temperature or high cabin temperature, the temperature of the HV battery may become high.)
  • Check for clogs in the hybrid battery intake duct.
  • This Vehicle Control History item may be stored if the temperature of the HV battery became high due to certain conditions, such as if the ambient temperature was high or the vehicle was driven continuously under high load.

    Explain to the customer that this is not a malfunction.

  1. If this Vehicle Control History item is stored, perform the following inspections.
    • Check the Vehicle Control History freeze frame data.
    • Check for clogs in the hybrid battery intake duct.
    • Inspect the HV battery cooling filter.

      2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: BATTERY COOLING FILTER: INSPECTION

    • Check the intake port of the HV battery cooling system for blockage, such as luggage, etc.
  2. After performing the above inspections, check the temperature of the HV battery in the Data List.

    If the temperature of the HV battery is high (approximately 40°C (104°F) or higher), stop the vehicle, turn the air conditioning system on (Temperature: Lo, Blower speed: Max) and perform the Active Test "Control the Hybrid/EV Battery Cooling Fan". Check that the temperature of the HV battery decreases.

  3. This Vehicle Control History item may be stored if the temperature of the HV battery became high due to certain conditions, such as if the ambient temperature was high, cabin temperature was high or the vehicle was driven continuously under high load (such as mountain driving or frequent acceleration/deceleration).

    Explain to the customer that this is not a malfunction.

VEHICLE CONTROL HISTORY DATA (HYBRID BATTERY SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / HV battery / Utility / Vehicle Control History.

Powertrain > HV Battery > Utility

Tester Display

Vehicle Control History

(e) Select a vehicle control history item to access the applicable data.

(f) Check the freeze frame Data recorded with the Vehicle Control History.

Techstream Display

Description

Atmospheric Pressure

Atmospheric pressure

Smoothed Value of BATT Voltage

Smoothed value of auxiliary battery voltage

Total Distance Traveled

Drive total distance

Total Distance Traveled - Unit

Drive total distance unit

WIN Control Limit Power

Power flowing to HV battery (Charging)

(detected at battery ECU assembly)

WOUT Control Limit Power

Power flowing from HV battery (Discharging)

(detected at battery ECU assembly)

Hybrid/EV Battery SOC

HV battery state of charge

Primary calculated from charging and discharging amperage

Hybrid/EV Battery Stack 1 Cell Minimum SOC

No. 1 HV supply stack sub-assembly cell Minimum SOC

Hybrid/EV Battery Stack 1 Cell Maximum SOC

No. 1 HV supply stack sub-assembly cell maximum SOC

Hybrid/EV Battery Stack 2 Cell Minimum SOC

No. 2 HV supply stack sub-assembly cell Minimum SOC

Hybrid/EV Battery Stack 2 Cell Maximum SOC

No. 2 HV supply stack sub-assembly cell maximum SOC

Hybrid/EV Battery Current for Hybrid/EV Battery Control

HV battery current for hybrid battery control

Hybrid/EV Battery Current for Hybrid/EV Battery Control (Sub)

HV battery current for hybrid battery control (Sub)

Hybrid/EV Battery Control Mode

HV battery control mode

Hybrid/EV Battery Check Status Light Request

Hybrid battery check status light request

Hybrid/EV Battery Determination Signal 1

HV battery signal

Hybrid/EV Battery Determination Signal 2

HV battery signal

Vehicle Model and HV/EV Battery ECU Coordination

Vehicle model and HV battery ECU coordination

Hybrid/EV Battery Extremely Low Temperature Judgment

Hybrid battery extremely low temperature Judgment

High Voltage Line between Stack Engaged

High voltage line between stack engaged

ON: Connection, OFF: Non-connection

Hybrid/EV Battery Cell Type Determination

Hybrid battery cell type determination

Hybrid/EV Battery Stack 1 Cell Average Voltage

No. 1 HV supply stack sub-assembly cell average voltage

Hybrid/EV Battery Stack 2 Cell Average Voltage

No. 2 HV supply stack sub-assembly cell average voltage

Hybrid/EV Battery Block 1 Cell Average Voltage

HV battery block 1 cell average voltage

Hybrid/EV Battery Block 2 Cell Average Voltage

HV battery block 2 cell average voltage

Hybrid/EV Battery Block 3 Cell Average Voltage

HV battery block 3 cell average voltage

Hybrid/EV Battery Stack 1 Cell Minimum Voltage

No. 1 HV supply stack sub-assembly cell Minimum Voltage

Hybrid/EV Battery Stack 1 Cell Maximum Voltage

No. 1 HV supply stack sub-assembly cell maximum voltage

Hybrid/EV Battery Stack 2 Cell Minimum Voltage

No. 2 HV supply stack sub-assembly cell Minimum Voltage

Hybrid/EV Battery Stack 2 Cell Maximum Voltage

No. 2 HV supply stack sub-assembly cell maximum voltage

Hybrid/EV Battery Cell 1 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 2 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 3 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 4 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 5 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 6 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 7 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 8 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 9 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 10 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 11 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 12 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 13 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 14 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 15 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 16 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 17 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 18 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 19 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 20 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 21 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 22 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 23 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 24 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 25 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 26 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 27 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 28 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 29 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 30 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 31 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 32 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 33 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 34 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 35 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 36 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 37 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 38 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 39 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 40 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 41 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 42 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 43 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 44 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 45 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 46 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 47 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 48 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 49 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 50 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 51 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 52 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 53 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 54 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 55 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 56 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 57 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 58 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 59 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 60 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 61 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 62 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 63 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 64 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 65 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 66 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 67 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 68 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 69 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Cell 70 Internal Resistance

Internal resistance of each battery cell

Hybrid/EV Battery Temperature 1

HV Battery module temperature

Hybrid/EV Battery Temperature 2

HV Battery module temperature

Hybrid/EV Battery Temperature 3

HV Battery module temperature

Hybrid/EV Battery Temperature 4

HV Battery module temperature

Hybrid/EV Battery Temperature 5

HV Battery module temperature

Hybrid/EV Battery Temperature 6

HV Battery module temperature

Hybrid/EV Battery Cooling Fan 1 Integrated Airflow

Battery cooling blower assembly integrated airflow

Hybrid/EV Battery Cooling Fan Intake Air Temperature 1

Battery cooling blower assembly intake air temperature

Number of Cranking when No Hybrid/EV Battery

Number of cranking when no HV battery

Number of Hybrid Battery Mismatch Judgment with Engine ECU

Number of HV battery mismatch Judgment with ECM

Hybrid/EV Battery Stack 1 Current Interrupt Device

No. 1 HV supply stack sub-assembly current interrupt device

Hybrid/EV Battery Stack 2 Current Interrupt Device

No. 2 HV supply stack sub-assembly current interrupt device