2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Data List / Active Test

  1. PERFORM ACTIVE TEST 

    HINT.

    Performing the Techstream's Active Test allows a relay, VSV, actuator and other items to be operated without removing any parts Performing the Active Test early in troubleshooting is one way to save time The Data List can be displayed during the Active Test

    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG)
    3. Turn the Techstream on
    4. Enter the following menus: Body Electrical / Air Conditioner / Active Test
    5. Check the value(s) by referring to the table below

      Air Conditioner 

      ACTIVE TEST

      Tester Display Test Part Control Range Diagnostic Note
      Defogger Rly-R Turns rear window defogger OFF/ON -
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.

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