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Home >> Toyota >> 2012 >> Prius Three >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Except Plug-In) (Diagnostic Codes (P0010-P043F)) >> SFI System >> DTC P0102: Mass or Volume Air Flow Circuit Low Input; DTC P0103: Mass or Volume Air Flow Circuit High Input >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Confirmation Driving Pattern
GTY314796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 at least 30 seconds.
  5. Turn the power switch on (IG) and turn the Techstream on [A].
  6. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
  7. Start the engine.
  8. Idle the engine for 5 seconds [B].
  9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
  10. Read the pending DTCs.

    HINT: 

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. During normal driving, increase the vehicle speed to 80 km/h (50 mph) [D].
    WARNING:

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

  12. Depress the accelerator pedal fully to increase the vehicle speed to between 100 and 120 km/h (62 and 75 mph) (engine speed of 4000 rpm or more) and then maintain the speed for at least 5 seconds [E].
    WARNING:

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

  13. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [F].
  14. Read the pending DTCs.

    HINT: 

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  15. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  16. Input the DTC: P0102 or P0103.
  17. 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 steps [B] through [F] again.
  18. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to DTC CHECK / CLEAR .

    HINT: 

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