PCT
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I snagged a LX
Ram Heavy Duty Forum
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AlfaOBD
- Thread starter MEZZ2006
- Start date
LX works, you could have also picked up the vLinker MC+.
Good evening, I have searched and seen this question asked many times, but I have yet to find a clear answer.
I cannot get my obdlink mx+ to connect to even do a simple DTC code read.
It says it’s connected, but when I try to perform a function, it tries to connect 4 times and then fails.
Any ideas?
Thanks
I cannot get my obdlink mx+ to connect to even do a simple DTC code read.
It says it’s connected, but when I try to perform a function, it tries to connect 4 times and then fails.
Any ideas?
Thanks
ColderWeather86
Active Member
You need to connect to the OBDlink app to turn it on before it will link to AlfaOBD
flan
Well-Known Member
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Do you have SGW bypass cable installed?I think I might have figured it out. It will only connect under body computer.
I was trying to connect under tire control as I am only trying to adjust tire pressures 
Rockcrawlindude
a rock crawlin’ dude
Turn your truck’s lights on. Turn the flashers on. Walk around the rig.
Trailers have combo turn/stop lights so you will check all your lights this way
Tried enabling it in the BCM and it didn't work.
Pearce
Well-Known Member
I'm trying to change tire pressure thresholds. I have the MX+ and Kaodtech bypass installed. But OBDLink, AlfaOBD and JScan all give me errors when connected to the bypass. Alfa says CAN ERROR Connect Failed, JSCAN says the Module - Connection Test False when running the ELM327 identification. Am I missing something or is this just a bad bypass cable? They all talk to the truck fine without the bypass.
Try swapping the two leads that hook into the bypass and see if that works.
Unless the colors have changed, did you follow the pic in post #?
Pearce
Well-Known Member
Just finished flipping through all the pics in this thread. Think I have the wrong harness. But the plugs work. There are no white/green black/green labels like I saw in a previous post.
I ordered the 2019 - Current HD:
I ordered the 2019 - Current HD:
Swap them around. The black connector should go in the white base terminal and the white connector should go in the black.
Attachments
The yellow/blue is the key, as @HWTG said, swap the connectors.
I don't know why on earth he would put the black plug on the green wire and not the other way round.
Pearce
Well-Known Member
Thanks for the help fellas, all working. The take away is yellow/blue to the black base. And as I've seen mentioned here if you prefer not leaving the bypass installed then shave the clip on the plug to make it easily removable. Stubborn plugs to remove if you're not familiar with them.
Did you completely shave off the triangle/wedge piece off of the tab? Looks that way on the white connector but black looks to be in tact. Did you just use a razor blade and carefully trim away?
Would like mine to be temporary (only connected when I want to make changes). From reading these posts, seems this cable can be a PITA to remove because of these clips. But don't want to destroy my new cable by cutting it incorrectly.
Would like mine to be temporary (only connected when I want to make changes). From reading these posts, seems this cable can be a PITA to remove because of these clips. But don't want to destroy my new cable by cutting it incorrectly.
On mine, I didn't remove the clip completely, just took the sharp edge off at the opposite angle leaving a sort of small bump so it provides some grip, but not so much that I can't just pull them out. I'd guess it wouldn't matter if it was completely shaved off.
