2007 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Check Mode Procedure

  1. DESCRIPTION 
    1. Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic.
  2. CHECK MODE PROCEDURE 
    1. Make sure that the following conditions are met:
      1. Battery positive voltage 11 V or more.
      2. Throttle valve fully closed.
      3. Shift lever P or N position.
      4. A/C off.
    2. Turn the engine switch off.
    3. Connect the intelligent tester or Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the tester ON.
    6. Enter the following menus:

      Intelligent tester 

      Select: DIAGNOSIS / OBD/MOBD / ECT / CHECK MODE.

      Techstream 

      Select: Powertrain / ECT / Check Mode.

    7. Change the TCM to check mode. Make sure the MIL flashes as shown in the illustration.
      Fig 1: Identifying Blinking Pattern
      G04948293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.

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