MOTOR GENERATOR CONTROL SYSTEM, Diagnostic DTC:P0BFD62, P1C671F

DTC Code DTC Name
P0BFD62 Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure
P1C671F Drive Motor "A" Phase U-V-W Current Sensor Circuit Intermittent

DTC SUMMARY


  1. MALFUNCTION DESCRIPTION

    These DTCs indicate that the current sensor value is abnormal. The cause of this malfunction may be one of the following:


      Internal inverter malfunction

    • Current sensor malfunction

    • Inverter with converter assembly internal circuit malfunction

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0BFD62 Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure

Motor inverter current sensor characteristic malfunction:

The value of the total output of the U, V and W phase current sensors exceeds the threshold.*1

(1 trip detection logic)

  • Inverter with converter assembly

  • Motor cable

  • Hybrid vehicle transaxle assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P1C671F Drive Motor "A" Phase U-V-W Current Sensor Circuit Intermittent

The value of the total output of the U, V and W phase current sensors exceeds the threshold detected when DTC P0C7917, P0D3319, P1C5D19 or P1C5F19 is stored.

(1 trip detection logic)

  • Inverter with converter assembly

  • Motor cable

  • Hybrid vehicle transaxle assembly

  • Wire harness or connector

 Does not come on

Master Warning Light:

Does not come on

Tech Tips

*1: Under normal conditions, the value of the total output of the U, V and W phase current sensors is approximately 0.

CONFIRMATION DRIVING PATTERN

Tech Tips

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


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS 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 GTS on.

  6. With power switch on (IG) and wait for 5 seconds or more.

  7. Turn the power switch on (READY) with park (P) selected and wait for 5 seconds or more.

  8. With neutral (N) selected and wait for 5 seconds or more.

  9. Press the HV/EV mode switch to enter HV drive mode.

  10. Depress the accelerator pedal of the vehicle with the engine stopped and park (P) selected to start the engine.

  11. Drive the vehicle for approximately 10 minutes referring to the following freeze frame data items: "Vehicle Speed".

  12. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

  13. Check the DTC judgment result.

    Tech Tips


    • 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.

WIRING DIAGRAM

Refer to the wiring diagram for the Motor High-voltage Circuit.

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CAUTION / NOTICE / HINT

CAUTION:


  • B006HUP

  • Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.


    • Inspecting the high-voltage system

    • Disconnecting the low voltage connector of the inverter with converter assembly

    • Disconnecting the low voltage connector of the HV battery

    • Disconnecting the low voltage connector of the electric vehicle charger assembly

    • Disconnecting the low voltage connector of the solar energy control unit

  • B006IQP

    To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

  • B006HQC

    After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • B006IVPC05
    *a Without waiting for 10 minutes

    After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Click here

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly and the electric vehicle charger assembly.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.

    4. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Powertrain > Motor Generator > Trouble Codes
      Result
      Result Proceed to
      P0BFD62 or P1C671F only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid control system in the table below are output. B
      DTCs of motor generator control system in the table below are output. C
      Table 1
      Malfunction Content System Relevant DTC
      Insulation Malfunction Hybrid control system P1C7C49 Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
      P1C7D49 Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure
      P1C7E49 Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure
      P1C7F49 Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure
      High voltage system malfunction Hybrid control system P0AA649 Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure
      Table 2
      Malfunction Content System Relevant DTC
      Microcomputer malfunction Hybrid control system P0A1B49 Drive Motor "A" Control Module Internal Electronic Failure
      Motor generator control system P1C2B1C Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range
      P1C2B49 Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure
      P312487 Lost Communication between Drive Motor "A" and HV ECU Missing Message
      Power source circuit malfunction Motor generator control system P06B01C Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
      P06D61C Generator Control Module Offset Power Circuit Voltage Out of Range
      System malfunction Motor generator control system P0A7873 Drive Motor "A" Inverter Actuator Stuck Closed

      Tech Tips


      • P0BFD62 or P1C671F may be output as a result of the malfunctions indicated by the DTCs above.


        1. The chart above is listed in inspection order of priority.

        2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    C

    GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

    Result
    Result Proceed to
    OK A
    NG (The connector is not connected securely.) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    CAUTION:

    Be sure to wear insulated gloves.


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

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. B006IZQ

      Check the connection condition of the low voltage connectors of the inverter with converter assembly and the contact pressure of each terminal. Check the terminals for deformation, and the connector for water and foreign matter.

      Click here

      Note

      Before disconnecting the connector, confirm that it is properly connected by checking that the claws of the lock levers are engaged and that the connector cannot be pulled off.

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

      Tech Tips

      When connecting the connector, connect it with the lock levers raised. Rotate each lock lever downward and make sure that the connector is securely connected. When a lock lever is fully lowered, a click will be heard as its claw engages. After the click is heard, pull up on the connector to confirm that it is securely connected.


    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  3. CHECK MOTOR HIGH-VOLTAGE CIRCUIT

    Click here

    Tech Tips

    If the "Motor High-voltage Circuit" inspection results are normal, perform the next step.

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here