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Home >> Lexus >> 2011 >> HS 250h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0420)) >> SFI System >> DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control >> Confirmation Driving Pattern

Confirmation Driving Pattern

Fig 1: Identifying Ignition Switch / Scantool Operation Graph
GTY217949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Leave the vehicle outside overnight.
  2. Connect the Techstream to the DLC3.
  3. Turn the power switch on (IG) and turn the Techstream on.
  4. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.
  5. Check that the engine coolant temperature is 10°C (50°F) or less.
  6. Clear the DTCs. Refer to DTC CHECK / CLEAR .
  7. Turn the power switch off and wait for at least 30 seconds.
  8. Turn the power switch on (IG) and turn the Techstream on [A].
  9. Put the engine in inspection mode. Refer to INSPECTION MODE PROCEDURE .
  10. Start the engine.
  11. After starting the engine, wait 21 minutes or more [B].
  12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
  13. Read the pending DTC [C].

    HINT: 

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  14. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  15. Input the DTC: P0125.
  16. 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