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.

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HOMESERVICE MANUALSTOYOTA2009YARIS BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM (1NZ-FE)SFI SYSTEMEVAP SYSTEMINSPECTION PROCEDURE

2009 Toyota Yaris Base, 4D Sedan, Automatic

Inspection Procedure

2009 Toyota Yaris Base, 4D Sedan, AutomaticSECTION Inspection Procedure

NOTE: A Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT:

Using Monitor Information (Test Result) on the Techstream enables the EVAP (Evaporative Emission) system to be confirmed. Select the following menu items: Powertrain/Engine and ECT/Monitor/Evaporative System/Details.
Read freeze frame data using the Techstream. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

CONFIRM DTC
1. Turn the ignition switch to OFF and wait for 10 seconds.
2. Turn the ignition switch to ON.
3. Turn the ignition switch to OFF and wait for 10 seconds.
4. Connect a Techstream to the DLC3.
5. Turn the ignition switch to ON and turn the tester ON.
6. Select the following menu items: Powertrain/Engine and ECT/Trouble Codes.
7. Confirm DTCs and freeze frame data.
  If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below.
  
  NOTE: If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.

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.