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 Control Switch (TCS)
The Transmission Control Switch (TCS) is located on the side of the selector lever.
The TCS transmits a signal to the PCM. The signal from the TCS will cancel O/D and downshift the transaxle from 4th gear to 3rd gear when the selector lever is in the DRIVE position.
The signal of the TCS is used for the following functions:
- as an input signal to the PCM to cancel O/D .
- to illuminate the O/D indicator light on the Instrument Cluster (IC).
The TCS does not have a substitute signal. If the TCS fails, the 3-4 shift cannot be cancelled.
NO RELATED
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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.