DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Motor Generator Control System (2WD) - Diagnostics - Introduction) >> MOTOR GENERATOR CONTROL SYSTEM (for 2WD) >> Utility [12/2019 - 11/2023] >> Utility [12/2019 - 11/2023]

Utility [12/2019 - 11/2023]

WARNING: This page is about a different variant/trim than selected.
  1. ALL READINESS 

    HINT: 

    • With "All Readiness", you can check whether or not the DTC judgment has been completed by using the GTS.
    • Check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.
    1. Connect the GTS to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn the GTS on.
    4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

      Powertrain > Motor Generator > Clear DTCs 

    5. Turn the ignition switch off and wait for at least 2 minutes.
    6. Turn the ignition switch on (IG).
    7. Turn the GTS on.
    8. Perform the DTC confirmation driving pattern to run the DTC judgment.
    9. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

      Powertrain > Motor Generator > Utility 

      Tester Display
      All Readiness
    10. Input the DTCs to be confirmed.
    11. Check the DTC judgment result.
      GTS Display Description
      NORMAL
      • DTC judgment completed
      • System normal
      ABNORMAL
      • DTC judgment completed
      • System abnormal
      INCOMPLETE
      • DTC judgment not completed
      • Perform the driving pattern

      If the judgment result shows INCOMPLETE, perform the DTC confirmation driving pattern again.

    12. Turn the ignition switch off.
  2. CHECK FOR DIAGNOSIS RELATED INFORMATION 
    1. Connect the GTS to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn the GTS on.
    4. Enter the following menus: Powertrain / Motor Generator / Utility / Diagnosis Related Information.

      Powertrain > Motor Generator > Utility 

      Tester Display
      Diagnosis Related Information
    5. Check the diagnosis related information and freeze frame data, and then write them down.
  3. CLEAR DIAGNOSIS RELATED INFORMATION 
    1. Connect the GTS to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn the GTS on.
    4. Enter the following menus: Powertrain / Motor Generator / Clear DTCs.

      Powertrain > Motor Generator > Clear DTCs 

    5. Clear the diagnosis related information and freeze frame data.
  4. RESOLVER INITIALIZATION 
    NOTE:
    • The resolver learned values cannot be initialized by disconnecting the cable from the negative (-) auxiliary battery terminal or removing a fuse.
    • If resolver learning is not performed after the inverter with converter assembly or a part related to the hybrid transaxle assembly has been replaced, the following DTCs may be stored and the symptoms may occur:
      • DTC output
        1. P0BFF-1D (Drive Motor "A" Circuit Current Out of Range)
        2. P0C19-00 (Drive Motor "A" Execution Torque Performance)
        3. P0C79-17 (Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold)
        4. P0D33-19 (DC/DC Converter Circuit Current Above Threshold)
        5. P0E71-00 (Generator Execution Torque Performance)
        6. P1C5D-19 (Drive Motor "A" Inverter Circuit Current Above Threshold)
        7. P1C5F-19 (Generator Inverter Circuit Current Above Threshold)
        8. P1CA5-1D (Hybrid Generator Circuit Current Out of Range)
      • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
      • Shock or vibration during acceleration

    Perform resolver initialization and/or learning according to the following table:

    Part Replaced or Procedure Performed Learning Initialization
    Inverter with converter assembly ◦ -
    Hybrid vehicle transaxle assembly ◦ ◦*1
    1. ◦: Necessary
    2. -: Not necessary

    *1: If it is necessary to replace the hybrid vehicle transaxle assembly, make sure to perform resolver initialization before starting work.

    HINT: 

    After performing resolver initialization, "Learning not completed" will be displayed on the multi-information display when the ignition switch is turned on (READY).

    RELATED DATA LIST

    Data List Detail
    Generator Resolver Offset Value Displays the resolver learning value.
    Displays 0 after the inverter with converter assembly has been replaced (and learning has not been performed) or resolver initialization has been performed.
    Displays the resolver installation offset amount after resolver learning is performed.
    Generator Resolver Offset Complete Status Displays the completion status of the resolver learning.
    Displays ON when resolver learning is complete.
    Motor Resolver Offset Value Displays the resolver learning value.
    Displays 0 after the inverter with converter assembly has been replaced (and learning has not been performed) or resolver initialization has been performed.
    Displays the resolver installation offset amount after resolver learning is performed.
    Motor Resolver Offset Complete Status Displays the completion status of the resolver learning.
    Displays ON when resolver learning is complete.
    1. Related Data List Item:
      • Ready ON Status
      • Vehicle Speed
      • Shift Position
      • Accelerator Position
      • Motor Revolution
      • Generator Revolution
      • Motor Temperature
      • Generator Temperature
      • Inverter Coolant Temperature
      • Ambient Temperature
      • Atmospheric Pressure
    1. Initialize the learned value.
      1. Turn the ignition switch off and wait for 2 minutes or more.
      2. Connect the GTS to the DLC3.
      3. Turn the ignition switch on (IG).
      4. Turn the GTS on.
      5. Enter the following menus: Powertrain / Motor Generator / Utility / Resolver Learning/Initialization.

        Powertrain > Motor Generator > Utility 

        Tester Display
        Resolver Learning/Initialization
      6. According to the display on the GTS, select "Initialization" to perform resolver initialization.
        NOTE:

        Do not turn the ignition switch on (READY) while performing resolver initialization. If the ignition switch is turned on (READY) and the engine starts, generator resolver learning will be performed and resolver initialization will be canceled.

      7. Check that the generator resolver learning incomplete message is displayed on the multi-information display.
        GTY565379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      8. Turn the ignition switch off and wait for 1 minute or more.
      9. Turn the ignition switch on (IG).
  5. RESOLVER LEARNING 
    NOTE:
    • The resolver learned values cannot be initialized by disconnecting the cable from the negative (-) auxiliary battery terminal or removing a fuse.
    • If resolver learning is not performed after the inverter with converter assembly or a part related to the hybrid transaxle assembly has been replaced, the following DTCs may be stored and the symptoms may occur:
      • DTC output
        1. P0BFF-1D (Drive Motor "A" Circuit Current Out of Range)
        2. P0C19-00 (Drive Motor "A" Execution Torque Performance)
        3. P0C79-17 (Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold)
        4. P0D33-19 (DC/DC Converter Circuit Current Above Threshold)
        5. P0E71-00 (Generator Execution Torque Performance)
        6. P1C5D-19 (Drive Motor "A" Inverter Circuit Current Above Threshold)
        7. P1C5F-19 (Generator Inverter Circuit Current Above Threshold)
        8. P1CA5-1D (Hybrid Generator Circuit Current Out of Range)
      • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
      • Shock or vibration during acceleration

    Perform resolver initialization and/or learning according to the following table:

    Part Replaced or Procedure Performed Learning Initialization
    Inverter with converter assembly ◦ -
    Hybrid vehicle transaxle assembly ◦ ◦*1
    1. ◦: Necessary
    2. -: Not necessary

    *1: If it is necessary to replace the hybrid vehicle transaxle assembly, make sure to perform resolver initialization before starting work.

    HINT: 

    After performing resolver initialization, "Learning not completed" will be displayed on the multi-information display when the ignition switch is turned on (READY).

    RELATED DATA LIST

    Data List Detail
    Generator Resolver Offset Value Displays the resolver learning value.
    Displays 0 after the inverter with converter assembly has been replaced (and learning has not been performed) or resolver initialization has been performed.
    Displays the resolver installation offset amount after resolver learning is performed.
    Generator Resolver Offset Complete Status Displays the completion status of the resolver learning.
    Displays ON when resolver learning is complete.
    Motor Resolver Offset Value Displays the resolver learning value.
    Displays 0 after the inverter with converter assembly has been replaced (and learning has not been performed) or resolver initialization has been performed.
    Displays the resolver installation offset amount after resolver learning is performed.
    Motor Resolver Offset Complete Status Displays the completion status of the resolver learning.
    Displays ON when resolver learning is complete.
    1. Related Data List Item:
      • Ready ON Status
      • Vehicle Speed
      • Shift Position
      • Accelerator Position
      • Motor Revolution
      • Generator Revolution
      • Motor Temperature
      • Generator Temperature
      • Inverter Coolant Temperature
      • Ambient Temperature
      • Atmospheric Pressure
    1. Resolver Learning

      HINT: 

      If either of the following conditions is met, resolver learning may not be possible: 

      • The inverter coolant temperature is -40°C (-40°F) or less.
      • The atmospheric pressure is low and the motor (MG2) temperature is high. (Wait for the motor (MG2) to cool sufficiently before performing learning.)
        GTY994027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      After beginning resolver learning, make sure to perform the procedure until resolver learning for both the generator (MG1) and motor (MG2) are completed. (Resolver learning is complete when the resolver learning incomplete message on the multi-information is cleared.)

      1. Turn the ignition switch off and wait for 2 minutes or more.
      2. Connect the GTS to the DLC3.
      3. Turn the ignition switch on (IG).
      4. Check that the air conditioning system and power outlet socket are turned off.
      5. Check that the generator resolver learning incomplete message is displayed on the multi-information display.
        GTY565379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Turn the GTS on.
      7. Check for DTCs. Make sure no DTCs are output.

        (If any DTCs which may affect learning are output, resolver learning cannot be performed.)

      8. Enter the following menus: Powertrain / Motor Generator / Utility / Resolver Learning/Initialization.

        Powertrain > Motor Generator > Utility 

        Tester Display
        Resolver Learning/Initialization
      9. According to the display on the GTS, select "Learning" to start resolver learning.
      10. Turn the ignition switch on (READY) and wait until the READY indicator changes from blinking to illuminated.
        NOTE:

        Do not operate the accelerator pedal, shift lever or any switches until the READY indicator is illuminated.

        HINT: 

        When the ignition switch is turned on (READY) during resolver learning, the engine will start.

        It takes approximately 10 seconds for the READY indicator to illuminate after the ignition switch is turned on (READY).

      11. Check that the motor resolver learning incomplete message is displayed on the multi-information display.
        GTY565376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      12. Move the shift lever to D.
      13. Accelerate the vehicle to between 30 km/h (19 mph) and 40 km/h (25 mph), fully release the accelerator pedal and allow the vehicle to coast for 3 seconds. (*1)
        NOTE:

        Do not operate the accelerator pedal, brake pedal, shift lever or any switches while the vehicle is coasting.

        HINT: 

        If any of the following conditions are met, resolver learning may not be possible: 

        • A shift state other than D position.
        • The vehicle speed is excessively low or high.
        • The vehicle is being driven on a rough road or steep hill causing the vehicle speed to fluctuate while the vehicle is coasting.
        • The hybrid vehicle transaxle assembly temperature is excessively low.

          (If the hybrid vehicle transaxle assembly temperature is excessively low, such as (0°C (32°F) or less), the vehicle speed will decrease excessively while the vehicle is coasting.)

        • The SPORT drive mode is selected.
        • The driving support system is turned on.
      14. Check that the motor resolver learning incomplete message is not displayed on the multi-information display.

        HINT: 

        If the motor resolver learning incomplete message continues to be displayed on the multi-information display, perform step (*1) again.

      15. Stop the vehicle, turn the ignition switch off and wait for 1 minute or more.
      16. Turn the ignition switch on (READY).
      17. Check that the generator resolver learning incomplete and motor resolver learning incomplete messages are not displayed on the multi-information display.

        HINT: 

        If the ignition switch is turned on (IG) after less than 1 minute has elapsed since the ignition switch was turned off, the learned value may not be stored correctly and the generator resolver learning incomplete or motor resolver learning incomplete message may be displayed on the multi-information display.

Diesel-Data.com