Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001OR13
Model Year Start: 2020 Model: RAV4 HV Prod Date Range: [06/2020 -           ]
Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): P1BFB9E; Battery Discharge Control Circuit Stuck On; 2020 - 2024 MY RAV4 HV [06/2020 -        ]

DTC

P1BFB9E

Battery Discharge Control Circuit Stuck On

DESCRIPTION

The motor generator ECU located in the inverter with converter assembly receives power from the IGCT power source line and discharge control power source line. A semiconductor switch is installed in the motor generator ECU to switch which is used to switch the discharge control power source line power source on and off.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P1BFB9E

Battery Discharge Control Circuit Stuck On

When the motor generator ECU is started, the discharge control BAT switch command flag is OFF for a certain period of time, but the discharge control BAT voltage is at or above the threshold at that time.

(1 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 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): 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 to ON and turn the Techstream on.
  6. With the ignition switch ON and wait for 10 seconds or more.
  7. Enter the following menus: Powertrain / Motor Generator / 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, perform driving pattern again.

WIRING DIAGRAM

Refer to a wiring diagram for DTC P1BFCA2.

Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): P1BFCA2; Battery Discharge Control Circuit System Voltage Low+

PROCEDURE

1.

REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS

Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): DTC CHECK / CLEAR

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COMPLETED