LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2010 >> Prius Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0300-P106A)) (Except PHV) >> SFI System >> DTC P0505: Idle Control System Malfunction >> Confirmation Driving Pattern
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Confirmation Driving Pattern

Fig 1: Identifying Confirmation Driving Pattern
GTY221785Courtesy 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. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.
  4. Make sure that the coolant temperature is 60°C (140°F) or less [A].

    HINT: 

    If the coolant temperature is 60°C (140°F) or more, the engine may stop when idling. Make sure to keep the coolant temperature at 60°C (140°F) or less during the driving pattern.

  5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure). Refer to DTC CHECK / CLEAR .
  6. Put the engine in inspection mode. Refer to INSPECTION MODE PROCEDURE .
  7. Start the engine and drive the vehicle until the coolant temperature reaches 70°C (158°F) [B].
  8. Stop the vehicle (0 mph (0 km/h)) [C].
  9. Accelerate the vehicle to 34 to 37 mph (55 to 60 km/h) or more, and then idle the engine [D].

    HINT: 

    If the vehicle speed reaches more than 37 mph (60 km/h), the engine may stop while decelerating.

  10. Stop the vehicle (0 mph (0 km/h)) [E].
  11. Repeat steps [D] and [E] for 5 times or more.
  12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
  13. Read the pending DTC [F].
  14. If a pending DTC is output, the system is malfunctioning.

    HINT: 

    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: P0505.
  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
    UNKNOWN
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

    HINT: 

    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows INCOMPLETE or UNKNOWN, repeat steps [D] and [E] for 5 times or more.
  18. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  19. Check the judgment result.

    HINT: 

    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows NORMAL, the system is normal.
  20. If the test result is INCOMPLETE or UNKNOWN, 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 a permanent DTC is not output, the system is normal.