MOTOR GENERATOR CONTROL SYSTEM, Diagnostic DTC:P0E0028, P0E0428, P0E0828

Info Added 2017-10-06

DTC Code DTC Name
P0E0028 Generator Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure
P0E0428 Generator Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure
P0E0828 Generator Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

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

The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors the generator inverter current sensor. These DTCs indicate the malfunction of current sensors and do not indicate a malfunction of the high-voltage system.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0E0028 Generator Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

Generator inverter current sensor U phase offset malfunction:

The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the generator inverter is shutdown

(1 trip detection logic)

  • Inverter with converter assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0E0428 Generator Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

Generator inverter current sensor V phase offset malfunction:

The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the generator inverter is shutdown

(1 trip detection logic)

  • Inverter with converter assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0E0828 Generator Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

Generator inverter current sensor W phase offset malfunction:

The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the generator inverter is shutdown

(1 trip detection logic)

  • Inverter with converter assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on

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. Move the shift lever to N and wait for 5 seconds or more.

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

  10. 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.

CAUTION / NOTICE / HINT

CAUTION:


  • B0048QQ

    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

  • A005NJP

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

  • A005NAH

    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.

  • B0048M5C01
    *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.

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.

Click here

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
      P0E0028, P0E0428 and P0E0828 only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid control system in the tables below are output. B
      DTCs of motor generator control system in the tables below are output. C
      Table 1
      Malfunction Content System Relevant DTC
      Insulation malfunction Hybrid control system P1C7C49 Hybrid/EV Battery Voltage System (A/C Area) Insulation Resistance Decreased
      P1C7D49 Hybrid/EV Battery Voltage System (Hybrid/EV Battery Area) Insulation Resistance Decreased
      P1C7E49 Hybrid/EV Battery Voltage System (Transaxle Area) Insulation Resistance Decreased
      P1C7F49 Hybrid/EV Battery Voltage System (Direct Current Area) Insulation Resistance Decreased
      High voltage circuit malfunction Hybrid control system P0AA649 Hybrid/EV Battery Voltage System Insulation Resistance Decreased
      Table 2
      Malfunction Content System Relevant DTC
      Microcomputer malfunction Motor generator control system P0A1A47 Generator Control Module Watchdog / Safety μC Failure
      P0A1A49 Generator Control Module Internal Electronic Failure
      P1C2A1C Generator A/D Converter Circuit Circuit Voltage Out of Range
      P1C2A49 Generator A/D Converter Circuit Internal Electronic Failure
      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
      P313483 Communication Error from Drive Motor "A" to Generator Value of Signal Protection Calculation Incorrect
      P313486 Communication Error from Drive Motor "A" to Generator Signal Invalid
      P313487 Communication Error from Drive Motor "A" to Generator Missing Message
      Hybrid control system P0A1B49 Drive Motor "A" Control Module Internal Electronic Failure
      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
      Sensor and actuator circuit malfunction Motor generator control system P0A4B16 Generator Position Sensor Circuit Voltage Below Threshold
      P0A4B21 Generator Position Sensor Signal Amplitude < Minimum
      P0A4B22 Generator Position Sensor Signal Amplitude > Maximum
      P0C6413 Generator Position Sensor Circuit "A" Circuit Open
      P0C6416 Generator Position Sensor Circuit "A" Circuit Voltage Below Threshold
      P0C6417 Generator Position Sensor Circuit "A" Circuit Voltage Above Threshold
      P0C6913 Generator Position Sensor Circuit "B" Circuit Open
      P0C6916 Generator Position Sensor Circuit "B" Circuit Voltage Below Threshold
      P0C6917 Generator Position Sensor Circuit "B" Circuit Voltage Above Threshold
      P0D2D16 Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold
      P0D2D17 Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold
      P1CAC49 Generator Position Sensor Internal Electronic Failure
      P1CAF38 Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect
      System malfunction Motor generator control system P0A7A73 Generator Inverter Actuator Stuck Closed

      Tech Tips


      • P0E0028, P0E0428 and P0E0828 may be output as a result of the malfunction 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. A005MZX

      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.


    A

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR