Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N35E
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): P0A9563; High Voltage Fuse Accumulated Load History; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P0A9563

High Voltage Fuse Accumulated Load History

DESCRIPTION

The battery ECU assembly estimates the thermal load of the high voltage fuse. If the accumulated thermal load exceeds the threshold, the battery ECU assembly will store this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0A9563

High Voltage Fuse Accumulated Load History

Accumulated thermal load of the high voltage fuse estimated by the battery ECU assembly exceeds the threshold.

(1 trip detection logic)

Hybrid battery terminal block

Does not come on

Master Warning:

Does not come on

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. With power switch on (IG) and wait for 5 seconds or more.
  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

CAUTION / NOTICE / HINT

HINT:

If the hybrid battery terminal block has been replaced, make sure to perform "High Voltage Fuse Accumulated Load History Reset" and then clear the DTCs.

PROCEDURE

1.

REPLACE HYBRID BATTERY TERMINAL BLOCK

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: FUSE BOX (for LITHIUM-ION BATTERY): REMOVAL

NEXT

2.

PERFORM UTILITY (HIGH VOLTAGE FUSE ACCUMULATED LOAD HISTORY RESET)

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY

NEXT

3.

CLEAR DTC (HV BATTERY)

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / HV Battery / Clear DTCs.

(d) Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs

(e) Turn the power switch off.

NEXT

END