Pedal and Throttle Test Proxima

This step is very important to set the maximum power that the throttle are allowed to receive from the TxW unit. Most throttles have plastic gears and if the power is too much, they may be damaged. The butterfly may also hit the barrel to hard causing damage. This step will also put your Pedal and Throttle TPS signals in test mode so that you can see if they are working correctly before attempting calibration. The throttle TPS calibration are done automatically by the TxW so you will not see if it is working correctly. NB! Do not attempt to calibrate the TPS before this procedure is done.

First set the following values before proceeding:

Set the Low Limit Duty Cycle to 0 and the High Limit Duty Cycle to 128. This High value represent the maximum duty cycle that will be applied to the throttle at any time. A value of 255 = 100%. Use a value of 128 = 50% which will let you start off on the safe side. It may need a higher value on some throttles but then you can increase it later.

Set the Duty and Gain values at zero.

Set the test feature on. This will deactivate control and calibration and will display the actual values of the Pedal TPS and the Throttle TPS on the real-time bars. The Throttle TPS is displayed on the POT bar and the Pedal TPS is displayed on the TPS bar. On simulators it may use different potentiometers as we use different inputs on the TxW.

NB! Disconnect your engine ECU as this setup requires the pedal to be moved plenty of times which will activate the prime function and inject petrol into the intake manifold.

To test the Pedal TPS look at the real time display and press the pedal fully and then release it again. The TPS bar should move a fair distance in the display but should not reach maximum or minimum limit. If it does, then use the other signal on the Pedal TPS or adjust the sensor inside so that it does have free play. See min and max example below.

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Also note if the action is inverted. This will help setup the pedal logic on rising- or falling edge later during calibration. The standard is rising and it may be incorrect connection of the 5 volt and ground wires.

To test the throttle TPS for correct operation you need to manually press the throttle open and close. This must be done by finger or soft plastic so that you don’t damage the butterfly or tube. First press it close, then leave it at rest point, then open it fully. The POT bar should move a fair distance in the display but should not reach maximum or minimum limit. If it does, then use the other signal on the throttle TPS or adjust the sensor inside so that it does have free play. You should see some results like below:

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Also note if the action is inverted. It must be rising in value with increase of throttle. If it is falling then it may be incorrect connection of the 5 volt and ground wires.

If you can’t get to the throttle to test the TPS then you can skip to the next step and open it from the TxW side and see if it functions correct. You will only be able to see the rest and open position.

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Determine Maximum Duty cycle.

Make sure Test is on.   Now adjust the Opening Duty with the arrow and increase it gradually till the throttle opens.

Look carefully at the throttle TPS on the POT bar. Adjust it ill it reaches the maximum determined in the previous test which was 71%. If you could not do the previous test, then adjust it till you don’t see any more increase in throttle movement on the POT bar. Now put the Test off.  If you put Test back on, then the throttle will open again. It may be slow to react as it gets just enough power to its motor. Now increase the Opening Duty more and testing throttle response every time you alternate the Test function. Do this till the throttle responds just fast enough without making the value more than is needed. You should hear it reaching its full open limit but not too hard. If you make the duty more, then you may risk damaging the plastic gears. If it is too slow then it may respond sluggish in blip conditions. If this value increase more than 128 then you may need to increase the High Limit Duty Cycle value.

Now take this Opening Duty value and type it in the High Limit Duty Cycle block. This will prevent the TxW to exceed this amount of power to the unit.

Now put the Test function off and proceed with the next Step.