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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (W/ Canister Pump Module) - Diagnostic Codes (7 Of 9) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC P1542-00: Stop and Start Cranking Time Too Long [10/2023 - ] >> Confirmation Driving Pattern

Confirmation Driving Pattern

HINT: 

  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. Start the engine and warm it up [A].
  7. Drive the vehicle at 7 km/h (4.3 mph) or more.
    WARNING:

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

  8. Depress the brake pedal and stop the vehicle.
  9. Keep the engine stopped by stop and start control for 1 second or more. (Keep the shift lever in D.)
  10. Release the brake pedal with the shift lever in D to start the engine [B].
  11. Repeat steps [A] through [B] above at least 2 times in one driving cycle.
  12. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  13. 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.
  14. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  15. Input the DTC: P1542-00.
  16. 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 has a malfunction.
    • If the judgment result is INCOMPLETE, perform steps [A] through [C].
    • [A] to [C]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.