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.
Output State Control (OSC) Mode: Description
Output state control (OSC) on a service diagnostic tool, such as the NGS or WDS, allows the technician to control the main functions of the transmission such as gear shifts, torque converter clutch, or the shift solenoids quickly and easily. For example, the OSC allows the technician to command the torque converter clutch to engage while monitoring the actual converter slip, or disengage the torque converter clutch while testing the transmission upshifts or downshifts. The technician may command a shift solenoid to turn ON or OFF while carrying out the electrical tests, while measuring voltage or current with an inductive pickup.
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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.