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Question about the electronic throttle control system

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Old 02-23-2010, 02:49 PM
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Are our gas pedals' electronic throttle control systems rigged with an actual wire or are they wireless?
Old 02-23-2010, 02:52 PM
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Wait actual wire as ole' fashion way wire or you mean actual electronic wire?
I pretty sure it's not wireless ... I wouldn't trust it if it is ... I think we are using drive by wire concept
I remember there was a plug into the throttle body when I swapped out mine.
Old 02-23-2010, 03:20 PM
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As far as I know...there is no direct link between the gas pedal and the throttle body....the impulse given by the gas pedal is electronically sent to the ECU, which send the information to an actuator which manipulates a cable leading to the throttle body... I think that's how it goes...
Old 02-23-2010, 04:11 PM
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I mean is there an actual electronic connection or is it done wirelessly. I just saw on TV that Toyota may be using throttle by wireless and I was wondering if BMW does the same thing. I used to work with wireless, and let me tell you, if that's the case, I have no trust in the technology whatsoever. :thumbsdown:
Old 02-23-2010, 04:13 PM
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Originally Posted by porsche911targa
I mean is there an actual electronic connection or is it done wirelessly. I just saw on TV that Toyota may be using throttle by wireless and I was wondering if BMW does the same thing. I used to work with wireless, and let me tell you, if that's the case, I have no trust in the technology whatsoever. :thumbsdown:
I really doubt that....wireless connections are WAY to unreliable...
Old 02-23-2010, 04:14 PM
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http://www.dslreports.com/forum/r237...-Throttle-Work
Old 02-23-2010, 04:26 PM
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Originally Posted by Krozi
As far as I know...there is no direct link between the gas pedal and the throttle body....the impulse given by the gas pedal is electronically sent to the ECU, which send the information to an actuator which manipulates a cable leading to the throttle body... I think that's how it goes...
Correct. The accelerator pedal module has hall sensors that determine the pedal position and use a voltage divider to send this voltage value to the DME. The DME then uses a 0-5 volt signal to control the electric throttle valve.

Originally Posted by porsche911targa
I just saw on TV that Toyota may be using throttle by wireless and I was wondering if BMW does the same thing.
What are you doing watching FOX News? It's all physical wires. No wireless anything. The only thing wireless is the hands free bluetooth phone connectivity.
Old 02-23-2010, 05:42 PM
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Originally Posted by porsche911targa
I mean is there an actual electronic connection or is it done wirelessly. I just saw on TV that Toyota may be using throttle by wireless and I was wondering if BMW does the same thing. I used to work with wireless, and let me tell you, if that's the case, I have no trust in the technology whatsoever. :thumbsdown:
Dont know about our car but the Audi are same as toyota
Old 02-24-2010, 01:21 PM
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well old throttles used cables to open the throttle body on the engine. now its electrically. the pedal is a variable switch, and the motor has a varibale motor to open the throttle blade. its done through wires.

maybe the term wireless got thrown around since the throttles dont used actual cables anymore.
Old 02-24-2010, 03:22 PM
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Thanks, Krozi. That explained it very well.

Originally Posted by turboawd
well old throttles used cables to open the throttle body on the engine. now its electrically. the pedal is a variable switch, and the motor has a varibale motor to open the throttle blade. its done through wires.

maybe the term wireless got thrown around since the throttles dont used actual cables anymore.
I think you're right, maybe a clueless reporter wanted to sound impressive. I've googled this subject a lot since my question and the closer I can get to an answer is this patent disclosure:

http://www.patentstorm.us/patents/57...scription.html


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