Post‑Install & Calibrating the Throttle Position Sensor | Power Commander 6 101 (Part 8)

This lesson can be helpful whether you're looking to isolate an actual issue, or just have the peace of mind that you've buttoned up your install perfectly. So You have Power Core running, you've mounted the PC6, gotten the proper map, routed the harness, tidied up all the connections, and maybe added a quick shifter or map switch. Before you fire up the engine and ride off, there are some important post‑installation checks to perform. This step helps you catch mistakes and ensures the PC6 operates properly. Visual inspection: Before turning on the key, trace the entire harness. Check that every connector is fully seated and clicked into place. Inspect the ground connection for tightness and cleanliness. Make sure no wires are pinched between the fuel tank and frame, or near moving parts like the steering head or chain. Zip tie any loose sections to keep them from flopping around. Power up the PC6: Turn the ignition key to ON. You should see a light on the PC6 dance from red/green - then go solid green, indicating it’s receiving power. If nothing lights up, check each connection, especially the ground, and the battery voltage. If you’re working on a UTV, ensure the key is in the correct power position - some have more than just 1 key position. On some vehicles the PC6 lights might dance at first, then the lights will go out - in these cases you can start the vehicle to verify that the light does indeed go solid green. Connect to Power Core: Plug the PC6 into your laptop via USB. In Power Core, verify that the device is detected. Use the software’s Dashboard Pane to view real‑time readings: throttle position, RPM, gear (if wired), and all other operational readings. If equipped with a cable driven throttle body, move the throttle slowly and watch the TPS value increase smoothly from 0. This confirms that the TPS connection is correct. (Drive by wire machines may not indicate a moving throttle position at all - if the engine isn't running) We'll walk through calibration of this in a later lesson. Start the engine: With everything wired and your map loaded, start the vehicle perhaps with the fuel tank temporarily in place if needed - and verify that RPM updates properly. It should idle smoothly. Listen for misfires, odd vibrations, or warning lights. A hunting idle or backfiring could indicate a loose injector connector or a mis‑wired coil. If the engine won’t start, double‑check each connection—those are often the culprit. Throttle Position Calibration: If you do nothing with sending maps or customizing your PC6, at the very least one should calibrate the throttle position of the vehicle you've installed the PC6 onto. Dynojet preprograms the closed and open voltages of a vehicle we've researched and loads those as a baseline for what the machine typically runs. Your's may vary slightly based on mass assembly of these machines. In the C3 Device tab, click the calibrate, throttle position button. With the vehicle running you'll see the voltages hovering at a it's idle voltage (range low to high in values, others are inverse decreasing in voltage as you apply throttle - hence why we offer the inverse check mark) Drive by wire vehicles may not achieve full throttle opening while in neutral - might need the clutch pulled in, might even need to be on a dyno to snag the high/full open voltage.. With 0 throttle applied, click reset on the low value to store the low reading. Then apply a quick full throttle stab to store the high voltage value. The machine barely needs to rev up - on a snowmobile the clutch doesn't even need to engage - but do have the brake held or on a trackstand for safety. You can do this a few times to make sure your get the highest and lowest voltages - then click ok. After exiting the calibration - verify your cell tracer now runs from the 0% column to the 100% column. This guarantees that your machine's throttle exactly matches where we or your tuner desired those fuel/spark changes to correlate on the mapping table at 60% throttle - (it's not 52 or 70% - it's exact for you) Short test ride: If the engine runs properly, reinstall all removed components. Take a short ride or drive, paying attention to throttle response across the rev range. Does the engine hesitate? Does it surge? Troubleshooting: If issues arise, don’t panic. Check the basics: are all plugs in the right place? Is the ground secure? Have you loaded the correct map? If the engine only runs on three of your four cylinders, maybe one injector plug isn’t fully clicked. If gear position always reads zero, your gear sensor tap may be on the wrong wire. Power Core’s Device Error Details Button can help by showing error messages. Once you’ve completed these checks and everything functions smoothly, congratulations! Your PC6 installation is a success.The foundation you’ve laid here—doing the installation right and verifying it—sets you up for success on the tuning side. #Dynojet