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 Avalon XLSFACTORY OEM SERVICE PROCEDURE
Front Speed Sensor: Inspection
- INSPECT FRONT SPEED SENSOR
- Make sure that there is no looseness at the locking part and the connecting part of the connectors.
- Disconnect the front speed sensor connectors.
- Measure the resistance according to the value (s) in the table below.
Resistance:
LH
RESISTANCE SPECIFICATIONTester Connection Specified Condition A8-1 (FL+) - A8-2 (FL-) 1.22 to 0.92 kΩ A8-1 (FL+) - Body ground 10 kΩ or higher A8-2 (FL-) - Body ground 10 kΩ or higher RH
RESISTANCE SPECIFICATIONTester Connection Specified Condition A30-1 (FR+) - A30-2 (FR-) 1.22 to 0.92 kΩ A30-1 (FR+) - Body ground 10 kΩ or higher A30-2 (FR-) - Body ground 10 kΩ or higher
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.