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.
Transmission Fluid Temperature (TFT) Sensor
The Transmission Fluid Temperature (TFT) sensor is located on the internal wiring harness to the solenoid valves in the transmission fluid pan.
It is a resistor and measures the TFT .
The TFT is used by the PCM for the following functions:
- Applying the TCC is not permitted until the transmission fluid reaches a certain temperature.
- Engagement of 4th gear is prevented in extreme sub-zero temperatures until the normal operating temperature is reached.
- If the TFT is excessive, a pre-set fixed shift curve is selected and the TCC is closed in 2, 3 and 4, and the transaxle warning indicator is activated. No substitute signal is available for the TFT sensor.
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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.