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Home >> Toyota >> 2017 >> Prius Prime Advanced >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Motor Generator Control System - Diagnostic Codes (1 Of 3) >> Motor Generator Control System >> DTC P0A94-9E: DC/DC Converter Stuck On; DTC P0D33-19: DC/DC Converter Circuit Current Above Threshold [09/2016 - ] >> Component Operating Range
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Component Operating Range

Motor generator control ECU DTC P0A94 (INF P0A94-9E) is not detected
DTC P0D33 (INF P0D33-19) is not detected


HINT: 

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream 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 Techstream on.
  6. With power switch on (IG) and wait for 5 seconds or more. [*1]
  7. Turn the power switch on (READY) and wait for 5 seconds or more. [*2]
  8. Press the HV/EV mode switch to enter HV drive mode. [*3]
  9. Depress the accelerator pedal of the vehicle with the engine stopped and park (P) selected to start the engine. [*4]
    NOTE:

    As the state of charge of the HV battery may be low after driving in fail-safe mode, it will automatically be charged for 5 to 10 minutes with power switch on (READY) after repairs have been performed.

    HINT: 

    • Check that there are no abnormalities (abnormal sounds, coolant leaks, etc.).
    • [*1] to [*4]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  10. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  11. 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 or N/A, perform the normal judgment procedure again.