If you tap the CHMSL there should be no reason the turn off the AEB. REDARCs just need a brake signal to function, nothing magic here I can see? I talked to a REDARC tech support guy yesterday. Was dumb as a stump. Waste of time. What i'd like is some clarifacation on the Grey/Brn (org?) wire in the TBC Conn. That's the only wire that hasn't been positivly defined, and is probably why there's not a PnP solution today. It's either LIN buss or Brake signal, but i did not see it go high with my meter when i applied the brakes, but i just had the Truck 'On', not running.
Maybe I misunderstood something I picked up somewhere that I thought there was ambiguity if the CHMSL actually comes on from a automatic emergency brake event vs. a user pedal input? That is why I suspect we have a LIN bus signal input for the factory OEM controller.
Well, Ford's 5G solution was to tap the CHMSL as the brake signal. Have to ask ford engineering, a quick test on the '24 would be to slowly back the truck towards some bushes. Mine applied the brakes about a foot away, monitor the CHMSL. Not sure why they went to the Lin buss extension. Can you pull up the brake controller connector for the '24 Bronco with just basic tow package? Because that appears to have a brake signal line. I may be wrong about pin 12, they may both be the same? Hmm.
Yeah, looking at your previous post with the Bronco Diagrams and connector pin out, I am starting to also think it may be plug and play with the REDARC Bronco pigtail adapter as it seems the Ranger is basically wired the same way.
Unfortunately, my Ford Service Connect subscription is expired, so I do not have access to look at the Bronco with the basic tow package. I think what you have posted already and your 12v testing closes the loop on this.
Probably due to liability. They want to 100% sure it will work with AEB. Looking at the wiring, and seeing what was done on 5G, it SHOULD work. But I wouldn't put my neck on the line and tell anyone to go ahead and do it.
Stanger, I'm out of the game now, but still curious (& ignorant about wiring), & would like to know these things: is the plug I found suitable for installing a TBC? Does an installation require tapping into another wire for the brake light signal? Are diodes necessary to protect against backflow?
I emailed Ford's General Counsel about the bed rails collapsing, the need for J braces, the lack of a compatible TBC, & the cracks in the bed floor. I got a call back & I sent details yesterday. I will be interested to see if the response is meaningful.
As I had feared the part they ordered was not a brake controller. They ordered a trm. Such a mess. Back to drawing board.
See my New post. Does look like there is a full PnP option form Redarc. No diodes or cut in needed.
Good work!So went ahead and did some tests on the BOO Brake pin 12 in the TBC controller that Helena-disappointed had found. this was obviously key.. Great find. so looks like there is a PnP option.
So first i wanted to remove all doubt about the miss i made on evaluating the Brake On/Off pin in the TBC connector that Helana found. I just missed, I should of done the check running. The Pin 'appears' (is) to be a brake on off signal but is not just a dummy wire from the brake pedal. Reading the pin discription from the pinout provided by Hootbro it says 'ECU - Brak EVP- Emulated BOO switch'. The ECU Emulated means it's generated by the ECU, and that's good because that means it can give us a high during AEB. So- to the tests
Youtube Video links provided.
First i did a lamp test to show it works on and off with the brake pedal, then I hooked an O-Scope to it to look for any indication it still might be a data line, it would show a square wave as data moved if it was, There was none, see pics. Lastly i took my foot off the brake and slowly backed up towards a bush. As you can see the Reverse AEB activates, my foot never touched the pedal and the line goes activated with the Brakes. While this is not forward AEB at speed, it's enough to indicatate, at least to me, that it would work. Lastly, the pinout is the same as the '24 Bronco pinout, which of course has a PnP Redarc TBC module. should work.
BTW: I do not reccomend you use this information to install a controler. If you do so, you do so at your own risk entirely. Doing so may result in your death. Please be aware of this.
https://www.redarcelectronics.com/us/trail-kit-ford-bronco
Foot is off the Pedal for the entire end of the video.
Brake light LED on the left is directly into the pin 12 of the connector, this is with Reverse AEB active, normal driving showed the lamp active with brake activation, see Video.
Pin 12 as seen by a scope, inactive, then Avtive. No Data in either state. Just around 14V high when active.
Inacitve:
Active:
