2021 Lexus RC F BaseFACTORY OEM SERVICE PROCEDURE

On-Vehicle Inspection [09/2014 - ]: Procedure

  1. INSPECT CAMSHAFT TIMING CONTROL MOTOR WITH EDU ASSEMBLY 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start the engine and warm it up.
    5. Inspect the camshaft timing control motor with EDU assembly LH.
      1. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT-iE Linear (Bank1).

        Powertrain > Engine > Active Test 

        Tester Display
        Control the VVT-iE Linear (Bank1)
      2. Check the output angle of the VVT (VVT Target Angle #1 and VVT Change Angle #1) displayed on the Techstream.
      3. Perform the Active Test with the engine speed at 1500 rpm.

        Specified Condition

        Active Test Movement Order Difference between "VVT Target Angle" and "VVT Change Angle"
        0 deg → 10 deg → 20 deg → 40 deg → 10 deg → 0 deg → 10 deg → END Within 5 DegFR

        If the result is not as specified, inspect the camshaft timing control motor with EDU assembly LH and camshaft timing gear assembly.

    6. Inspect the camshaft timing control motor with EDU assembly RH.
      1. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT-iE Linear (Bank2).

        Powertrain > Engine > Active Test 

        Tester Display
        Control the VVT-iE Linear (Bank2)
      2. Check the output angle of the VVT (VVT Target Angle #2 and VVT Change Angle #2) displayed on the Techstream.
      3. Perform the Active Test with the engine speed at 1500 rpm.

        Specified Condition

        Active Test Movement Order Difference between "VVT Target Angle" and "VVT Change Angle"
        0 deg → 10 deg → 20 deg → 40 deg → 10 deg → 0 deg → 10 deg → END Within 5 DegFR

        If the result is not as specified, inspect the camshaft timing control motor with EDU assembly RH and camshaft timing gear assembly.

Factory Service Tools

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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.