LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Engine Control System - Diagnostics - Introduction (1 Of 4)) >> SFI System >> Check Mode Procedure [11/2021 - ] >> Check Mode Procedure [11/2021 - ]

Check Mode Procedure [11/2021 - ]

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect malfunctions that cannot be detected in normal mode.

NOTE:

All of the stored DTCs and Freeze Frame Data are cleared if: 1) the ECM is changed from normal mode to check mode or vice versa; or 2) the ignition switch is turned from ON to ACC or off while in check mode. Before changing modes, always check for and note any DTCs and Freeze Frame Data.

  1. CHECK MODE PROCEDURE 
    1. Check and ensure the following conditions:
      1. Auxiliary battery voltage is 11 V or higher.
      2. Accelerator pedal is fully released.
      3. P or N is selected.
      4. A/C switch is off.
    2. Turn the ignition switch off.
    3. Connect the GTS to the DLC3.
    4. Turn the ignition switch to ON.
    5. Turn the GTS on.
    6. Enter the following menus: Powertrain / Engine / Utility / Check Mode.

      Powertrain > Engine > Utility 

      Tester Display
      Check Mode
    7. Change the ECM from normal mode to check mode.
    8. Check that the MIL flashes as shown in the illustration.
      GTY758299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Turn the ignition switch to ON (READY).
    10. Check that the MIL turns off.
    11. Simulate the conditions of the malfunction described by the customer.
    12. Check for DTCs and Freeze Frame Data using the GTS.
scientia non olet · About LEMON Manuals