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HOMESERVICE MANUALSTOYOTA2009YARIS BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM (1NZ-FE)SFI SYSTEMREGISTRATION
2009 Toyota Yaris Base, 4D Sedan, Automatic

SFI System: Registration

2009 Toyota Yaris Base, 4D Sedan, AutomaticSECTION Registration
NOTE: The Vehicle Identification Number (VIN) must be input into the replacement ECM.

HINT:

The VIN is a 17-digit alphanumeric number. A Techstream is required to register the VIN.

  1. DESCRIPTION 

    HINT:

    This registration section consists of two parts, Read VIN and Write VIN.

    1. Read VIN: This process allows the VIN stored in the ECM to be read in order to confirm that the two VINs, provided with the vehicle and stored in the vehicle's ECM, are the same.
    2. Write VIN: Explains the VIN writing process in a flowchart. This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.
  2. READ VIN 
    1. Confirm the vehicle VIN.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch ON.
    4. Turn the tester ON.
    5. Select the following menu items: Powertrain/Engine and ECT/Utility/VIN/VIN Read.
  3. WRITE VIN 
    1. Confirm the vehicle VIN.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the tester ON.
    5. Select the following menu items: Powertrain/Engine and ECT/Utility/VIN/VIN Write.
RENDER: 1.0x

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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.