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): Description
The OSC aids in repairing output actuators associated with the powertrain control module (PCM). This mode allows the technician to change the individual actuator state on command. For example, the output can be enabled or disabled, the duty cycle or the angle of the output can be increased or decreased. This function is supported by the vehicle strategy but may not be present on all vehicles or available on all scan tools.
The following outputs can be controlled:
| Controlled Output | Output State |
|---|---|
| A/C Clutch Relay (ACC) | ON-OFF |
| Canister Vacuum Valve (EVMV) | % |
| DC/DC Converter Enable (DCE) | ON-OFF |
| Desired Electronic Throttle Control (ETC) Throttle Angle | Degrees |
| Desired Engine RPM | RPM |
| Fuel Pump Duty Cycle (FP) | % |
| Heater Pump Control Relay (HPCR) | ON-OFF |
| Motor Electronics Coolant Pump (MECP) | ON-OFF |
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.