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HOMESERVICE MANUALSLEXUS2010LS 460L AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (DIAGNOSTIC CODES (P0010-P0308)SFI SYSTEMDTC P0116: ENGINE COOLANT TEMPERATURE CIRCUIT RANGE / PERFORMANCE PROBLEMCONFIRMATION DRIVING PATTERN
2010 Lexus LS 460L AWD

Confirmation Driving Pattern

2010 Lexus LS 460L AWDSECTION Confirmation Driving Pattern
Fig 1: Identifying Engine Switch / Scantool Operation Graph
GTY275235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and turn the Techstream on.
  3. Enter the following menu items: Powertrain / Engine / Data List / Coolant Temp.
  4. Check that the coolant temperature is 60°C (140°F) or less.
  5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure). Refer toDTC CHECK / CLEAR .
  6. Turn the engine switch off and wait for at least 30 seconds.
  7. Turn the engine switch on (IG) and turn the Techstream on [A].
  8. Start the engine and idle it for 5 minutes or more [B].

    HINT: 

    If the engine coolant temperature does not change by 5°C (9°F) or more, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
  10. Read the pending DTCs [C].

    HINT: 

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P0116.
  13. 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 memory limit

    HINT: 

    If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [D] and [E].

  14. Drive the vehicle at 25 mph (40 km/h) or more for a total of 5 minutes or more [D].
    WARNING:

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

    HINT: 

    In the event of the driving pattern being interrupted (possibly due to factors such as traffic conditions), the driving pattern can be resumed.

  15. Check the DTC judgment result again [E].

    HINT: 

    If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [D] and [E] again.

  16. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer toDTC CHECK / CLEAR .

    HINT: 

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.