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.
2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Transmission Wire: Inspection
- INSPECT TRANSMISSION WIRE
- Measure the resistance of the transmission wire.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition 1 (OT-) - 9 (OT+) 79 to 156 kΩ 1 (OT-) - Body ground 1 MΩ or higher 9 (OT+) - Body ground 1 MΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
If the resistance is not within the specified range of either of the ATF temperatures shown in the table below, the driveability of the vehicle may decrease.
Standard resistance
ATF TEMPERATURE SPECIFIED CONDITIONATF Temperature Specified Condition 20°C (68°F) 3 to 4 kΩ 11 OX (230°F) 0.22 to 0.28 kΩ
- Measure the resistance of the transmission wire.
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.