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: Notes
Output state control (OSC) mode allows the technician to take control of certain parameters to function the transmission.
For example, OSC allows the technician to shift the transmission only when commanding a gear change. If the technician commands 1st gear in OSC, the transmission will remain in 1st gear until the technician commands the next gear.
Another example of the OSC features is that a technician can command a shift solenoid to turn ON or OFF when carrying out an electrical circuit check. OSC has 2 modes of operation for transmission, the BENCH Mode and the DRIVE Mode. Each mode/parameter has a unique set of vehicle operating requirements that the technician must meet before being allowed to operate OSC.
- The vehicle requirements MUST BE MET when SENDING the OSC value. Refer to vehicle requirements for each individual test.
- If the vehicle requirements are NOT MET when SENDING the OSC value, an ERROR MESSAGE will appear. When the ERROR MESSAGE is received, OSC is aborted and must be restarted.
- If after a sent value is substituted and the vehicle requirements are no longer met, the powertrain control module (PCM) will cancel the OSC value and resume normal operation. No error message will be sent.
- The OSC value XXX may be sent anytime to cancel OSC.
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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.
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