DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 97 (Engine Control System (A25A-FXS) - Diagnostic Codes (P2610-P2A00)) >> SFI System >> DTC P2681-11: Engine Coolant Bypass Valve Circuit Short to Ground; DTC P2681-15: Engine Coolant Bypass Valve Circuit Short to Battery or Open [12/2019 - 10/2022] >> Confirmation Driving Pattern

Confirmation Driving Pattern

WARNING: This page is about a different variant/trim than selected.

HINT: 

Make sure to perform this procedure when the engine coolant temperature is between 5 and 40°C (41 and 104°F) and the difference between the engine coolant temperature and intake air temperature is within 10°C (18°F) or less.

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON.
  7. Turn the GTS on.
  8. Enter the following menus: Powertrain / Engine / Active Test / Activate the Coolant Water Route Switching Valve.
  9. Perform the Active Test Activate the Coolant Water Route Switching Valve, select "Close" and wait for 3 seconds or more.
  10. Perform the Active Test Activate the Coolant Water Route Switching Valve, select "Open" and wait for 3 seconds or more.
  11. Enter the following menus: Powertrain / Engine / Trouble Codes.
  12. 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.
  13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  14. Input the DTC: P2681-11 or P2681-15.
  15. Check the DTC judgment result.
    GTS 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

    HINT: 

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • If the judgment result is INCOMPLETE, perform the Confirmation Driving Pattern and check the DTC judgment result again.
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