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.
Automatic Transaxle Diagnosis - 4T40-E: Operation: Solenoids
Transaxle is shifted up or down by 2 electric solenoids. Both solenoids are located on the valve body. Ignition power is supplied to each solenoid by Red 10-amp ERLS fuse, located in instrument panel fuse block. For solenoid positions at each selector lever position, see CLUTCH & BAND APPLICATION TABLE under ELECTRONIC TESTING.
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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.