Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE
On-Vehicle Inspection
- INSPECT FUNCTION OF CAMSHAFT TIMING CONTROL MOTOR
- Connect the Techstream to the DLC3
- Turn the engine switch on (IG) and turn the Techstream ON.
- Start the engine and warm it up.
- Idle the engine
- Enter the following menus: Powertrain / Engine / Active Test / Control the VVT-iE Linear (Bank 1) or Control the VVT-iE Linear (Bank 2).
- Monitor the output angle of the VVT (VVT-iE Aim Angle (Bank 1) and VVT Change Angle (Bank 1) or VVT-iE Aim Angle (Bank 2) and VVT-iE Change Angle (Bank 2)) displayed on the Techstream.
- Perform the Active Test operation with the engine speed at 1500 rpm.
Specified Condition
SPECIFIED CONDITION CHARTActive Test Movement Order Difference between "MD VVT Aim 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 assembly and camshaft timing gear assembly
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.