mmarfan
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- Joined
- Jan 20, 2017
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- Location
- Lebanon, Ohio
- Vehicle(s)
- 2016 Mustang GT Competition Orange
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- #1
So I am trying to tackle '18+ active exhaust valve control with an Arduino. I am using the PWM feature to try to control the position. So far I have had no luck.
Attached is the diagram I got from the other '18 exhaust thread.
18ExhaustDiagram.png
Setup:
Using a computer power supply to give the +12 to the power pins (pin 3 +12V, pin 1 GRD)
Using pin 4 to input the PWM signal. I have also tried pin 2 as well.
My setup has the ability to control the pulse width of the Arduino from 0% to 100% duty cycle. The PWM signal pulse is +5V.
Observations:
On initial setup, when +12V is applied, the motor seemed as if it set itself back to 0 load position.
When I turn on the +12V, pin 2 has a ~2.5V output.
I have tried 30Hz, 120Hz, 240Hz, and 480Hz with no success of moving the motor.
I would expect that If I input a solid 5V, the duty cycle would be 100% and the motor would go the opposite position, and this is not happening.
I'm a bit stuck. I'm not sure the sensitivity of the frequency of PWM, but that could have something to do with it. I'm not sure of the frequency of the Ford PWM system.
I'm considering inputing a PWM higher than +5V to see if that is the issue, but I really don't want to blow it up. I also considered finding someone local with a '18+ with active exhaust and using the Arduino as a logic analyzer to figure it out.
Attached is the diagram I got from the other '18 exhaust thread.
18ExhaustDiagram.png
Setup:
Using a computer power supply to give the +12 to the power pins (pin 3 +12V, pin 1 GRD)
Using pin 4 to input the PWM signal. I have also tried pin 2 as well.
My setup has the ability to control the pulse width of the Arduino from 0% to 100% duty cycle. The PWM signal pulse is +5V.
Observations:
On initial setup, when +12V is applied, the motor seemed as if it set itself back to 0 load position.
When I turn on the +12V, pin 2 has a ~2.5V output.
I have tried 30Hz, 120Hz, 240Hz, and 480Hz with no success of moving the motor.
I would expect that If I input a solid 5V, the duty cycle would be 100% and the motor would go the opposite position, and this is not happening.
I'm a bit stuck. I'm not sure the sensitivity of the frequency of PWM, but that could have something to do with it. I'm not sure of the frequency of the Ford PWM system.
I'm considering inputing a PWM higher than +5V to see if that is the issue, but I really don't want to blow it up. I also considered finding someone local with a '18+ with active exhaust and using the Arduino as a logic analyzer to figure it out.
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