Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001H4NW
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 -           ]
Title: HYBRID / BATTERY CONTROL: REAR MOTOR GENERATOR CONTROL SYSTEM: P1BF946; Internal Control Module (EEPROM Estimated Temperature Information) Calibration / Parameter Memory Failure; 2019 - 2024 MY RAV4 HV [02/2019 -        ]

DTC

P1BF946

Internal Control Module (EEPROM Estimated Temperature Information) Calibration / Parameter Memory Failure

DESCRIPTION

The inverter with converter assembly monitors its internal operation and will store this DTC if it detects a malfunction of its EEPROM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P1BF946

Internal Control Module (EEPROM Estimated Temperature Information) Calibration / Parameter Memory Failure

ECU internal malfunction

(EEPROM error)

(2 trip detection logic)

Inverter with converter assembly

Does not come on

Master Warning:

Comes 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 2019 - 2024 MY RAV4 HV [02/2019 -        ]; HYBRID / BATTERY CONTROL: REAR MOTOR GENERATOR CONTROL SYSTEM: UTILITY

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch ON and wait for 5 seconds or more.
  6. Turn the ignition switch off and wait for 90 seconds or more.
  7. Turn the ignition switch to ON and turn the Techstream on.
  8. With ignition switch ON and wait for 5 seconds or more.
  9. Enter the following menus: Powertrain / Rear Motor Generator / Utility / All Readiness.
  10. 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, perform driving pattern again.

PROCEDURE

1.

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click here 2019 MY RAV4 HV [02/2019 - 10/2019]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2020 MY RAV4 HV [10/2019 - 06/2020]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2020 MY RAV4 HV [06/2020 - 08/2020]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER (for AWD): REMOVAL

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COMPLETED