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.
2009 Toyota Yaris S, 4D HatchbackFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Chart
HINT:
- If a trouble code is displayed during the DTC check, inspect the suspected areas listed for that code. For details of the code, refer to the DIAGNOSTIC TROUBLE CODE CHART .
- Inspect the fuse and relay before investigating the suspected areas shown in the table below.
Wireless Door Lock Control
DIAGNOSTIC TROUBLE CODE CHART
| DTC No. | Detection Item | Suspected Area |
|---|---|---|
| See B1242 | Wireless Door Lock Tuner Circuit Malfunction | See:
|
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.
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