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Home >> Toyota >> 2020 >> RAV4 LE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 67 (Hybrid Control System (AWD, W/ Nickel Metal Hydride Battery) - Diagnostic Codes (4 Of 8)) >> HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY) >> DTC P0ABF-28: Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure [02/2019 - ] >> Procedure

DTC P0ABF-28: Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure [02/2019 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P0AFC-00, P0AFC-96 or P0A95-63" is not output. A
      "P0AFC-00, P0AFC-96 or P0A95-63" is also output. B
    5. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2019 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 12/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2021 - 11/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2024 - ]

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (BATTERY VOLTAGE SENSOR - HV BATTERY JUNCTION BLOCK ASSEMBLY) 

    See step  3 [02/2019 - 06/2020], or see step  3 [06/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE HYBRID BATTERY THERMISTOR 

    Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    Result: 

    OK 

    See step  3

  3. READ VALUE USING GTS (HYBRID/EV BATTERY CURRENT, HYBRID /EV BATTERY CURRENT SENSOR POWER SUPPLY VOLTAGE) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    Pre-procedure1

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the appropriate service information because this may cause a malfunction.

    2. Remove the No. 1 HV battery cover panel RH.

      Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 06/2020] , or refer to REMOVAL [06/2020 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    3. Disconnect the z20 battery current sensor connector.
      GTY944075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON.

      Procedure1

    6. Read the Data List.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid/EV Battery Current
      Hybrid/EV Battery Current Sensor Power Supply Voltage

      Standard

      Data List Specified Condition
      Hybrid/EV Battery Current Below -200 A
      Hybrid/EV Battery Current Sensor Power Supply Voltage 4.5 to 5.5 V

      Result

      Result Proceed to
      Within the specified range above A
      Other than above B

      Post-procedure1

    7. Turn the ignition switch off.
    8. Disconnect the cable from the negative (-) auxiliary battery terminal.
    9. Reconnect the z20 battery current sensor connector.

    Result: 

    B 

    REPLACE BATTERY VOLTAGE SENSOR 

    Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    Result: 

    A 

    See step  4

  4. REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY 

    Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 06/2020] , or refer to REMOVAL [06/2020 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  5

  5. SIMULATION TEST 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Clear the DTCs and freeze frame data.

      Powertrain > Hybrid Control > Clear DTCs 

    5. Drive the vehicle on urban roads for approximately 10 minutes.
    6. Turn the ignition switch off and wait for 2 minutes or more.
    7. Turn the ignition switch to ON and wait for 10 seconds or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. RECONFIRM DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Read output DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

    5. Turn the ignition switch off.

      Result

      Result Proceed to
      P0ABF-28 is not output. A
      P0ABF-28 is output. B

    Result: 

    A 

    COMPLETED 

    Result: 

    B 

    REPLACE BATTERY VOLTAGE SENSOR 

    Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

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