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Home >> Lexus >> 2021 >> RX 450h Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (8 Of 8) & Circuit Tests) >> SFI System >> DTC P3190: Poor Engine Power; DTC P3191: Engine does not Start [10/2015 - 12/2017] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

NOTE:

If the MIL (malfunction indicator lamp) or master warning light illuminates, immediately end the confirmation driving pattern. If DTCs P3190, P3191 and P3193 are output and the engine is stopped, the HV battery will no longer be chargeable and the distance that the vehicle can be driven will be limited.

GTY651242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Apply the parking brake firmly.
  2. Connect the Techstream to the DLC3.
  3. Turn the power switch on (IG) and turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (READY) and turn the Techstream on.
  7. Fully depress the accelerator pedal for 10 seconds with the vehicle stopped, the shift lever in P and the brake pedal depressed [A].
    NOTE:

    As soon as the engine starts, release the accelerator pedal.

  8. Release the parking brake.
  9. Drive the vehicle at an average of approximately 40 km/h (25 mph) or more until the total engine operation time is 10 minutes or more [B].
    WARNING:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT: 

    • It is not necessary to maintain the vehicle speed at 40 km/h (25 mph) throughout the road test.
    • If the engine stops, further depress the accelerator pedal to restart the engine.
  10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
  11. Read the DTCs (including pending DTCs).

    HINT: 

    • If a DTC (include pending DTC) is output, the system is malfunctioning.
    • If a DTC (include pending DTC) is not output, perform the following procedure.
  12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  13. Input the DTC: P3190 or P3191.
  14. Check the DTC judgment result.
    Techstream Display Description
    NORMAL
    • DTC judgment completed
    • System normal
    ABNORMAL
    • DTC judgment completed
    • System abnormal
    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions
    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    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 Confirmation Driving Pattern and check the DTC judgment result again.
  15. If no DTC is output, perform a universal trip and check for permanent DTCs.

    Refer to DTC CHECK / CLEAR [10/2015 - ]

    HINT: 

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.