standalone DBW system
TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
Thread Starter
Registered User
Joined: Oct 2018
Posts: 2
Likes: 0
is there a long answer
any info on how I can fake out the signal the TAC is looking for from the ECU and PCM? Its looks like the TAC communicates serially with the ECU and PCM if I read the wiring correctly. I tried to use an Arduino as controller but with not a good result. The gm system would work better is I could hack it to work as standalone. Any info is appreciated
any info on how I can fake out the signal the TAC is looking for from the ECU and PCM? Its looks like the TAC communicates serially with the ECU and PCM if I read the wiring correctly. I tried to use an Arduino as controller but with not a good result. The gm system would work better is I could hack it to work as standalone. Any info is appreciated TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
The problem is it is all so integrated with each other, which is the primary reason for DBW. Idle control is with the ECM; there is no IAC. With a stand alone, you would need a way to control idle, AND a way for the engine to know how much throttle is being applied/used. These types of functions can't be separated to run right.
Launching!
Joined: Apr 2014
Posts: 220
Likes: 3
If all you are trying is open a throttle body with a pedal then all you need is pedal, throttle body and a cheap ecu (e67 $30). Think key on w/o engine running.Give me a call so we can see what your app is. Steve 909 910 3867
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo There is also a big difference, in terms of hardware, between the gen 3 and gen 4 implementation of DBW.
Andrew
Will the e67 keep the DBW "alive" indefinitely if the engine is not running? I ask because the Holley Dominator will turn the DBW off if it doesn't see an rpm signal after about a minute of ECU "on" time.
Andrew
On The Tree
Joined: Dec 2013
Posts: 182
Likes: 11
From: North Vanacouver , BC
i know gen3 will work indefinitely but the blade will go into resting position if it doesn't see a throttle change for 10-15 secs . I don't know how the idle control would work . Depends on what OP is trying to accomplish .
TECH Addict
Joined: Oct 2016
Posts: 2,513
Likes: 480
From: PDX-OR-USA
What your talking about used to be called a "repeater" circuit.
It can be analog, BUT (Big issue) if it gets out of sync there is no fail safe, your just stuck with the result.
Its part of why BMW for a time had 2 throttle plates in the throttle body, one was the regular DBW the other
was for failsafe and overrun control. (It was pretty much a on/off kinda thing on the one I had.. )
It can be analog, BUT (Big issue) if it gets out of sync there is no fail safe, your just stuck with the result.
Its part of why BMW for a time had 2 throttle plates in the throttle body, one was the regular DBW the other
was for failsafe and overrun control. (It was pretty much a on/off kinda thing on the one I had.. )