Jeep canbus issues
Personal vehicle , Sunday went out to the beach , on the way back got adaptive cruise control error lights on dash . no other symptoms
however when I got home and parked the car and went to get my scanner got abs , acc, service shifter no canbus message - once scanner got u codes for no communication with tcm / Bcm
30-40 seconds after turning on ignition the the fuel gauge needle starts to jump around
tested resistance for canbus it’s 59.8 omhs
volts are around 2.5-2.9v
and battery is 12.8
checked all fuses / grounds / plugs I could
nothing seems to be wrong
Possible bad battery sensor on negative cable and/or battery and/or loose, corroded battery connections. Age of battery?? Does vehicle have “push-button” start/stop? If yes, may have smaller auxiliary battery. “EZH” designation means you have an auxiliary battery.
Has recall u65 been done? That may be just a Canadian only bulletin, not sure. May have other issues
Hello Eduard, I was hoping someone else would answer. But I see you just posted this--and people that work harder than me are probably getting ready for bed. So I'll just make a fool of myself here. Because I know the sense of panic a person can get, when their own car starts to screw up. And they don't have a backup. First off, you say “nothing seems to be wrong”--based on some pretty quick…
Sorry Eduard--I hit the wrong key. But my suggestion would be, if this is not your usual kind of work, I'd suggest calling in the mobile tech that comes to your shop to get ‘em started and turn warning lights off, after the body shop has done their repairs. If your shop doesn’t have one of these mobile diag people, ask around, and go to a shop that has a reputation for diagnostic work. And for…
Sounds like a module might be taking data lines down, just a note i'm sure u cant check for ohms at DLC it will always be around 60 ohms because Chrysler uses one 60 ohm resistor that comes directly from TIPM, you must check data lines after TIPM or at any other module but not DLC HTH
Yes--me again. Here's the link to the ATG course. Two actually--one CAN. one non-CAN. Here's the CAN one: atgtraining.com/product-catego… Then, a month later, non-CAN busses: atgtraining.com/product-catego… Four days. 1.5 hours per class, for 60 bucks. And you can re-watch each day's class the next day, if the live show time is not good for you. All this for 60 bucks…
Hi Eduard, Start with a visual inspection of all chassis components and verify connectors are not water logged. “Personal vehicle , Sunday went out to the beach , on the way back got adaptive cruise control error lights on dash . no other symptoms”. Go to where it began, think about it. If you are strictly a Body and Paint guy, I am sure you know some regular mechanic/ technician types that…
Went to the beach. Did you take it out onto the beach? Get in the water, even a little? If so as Glenn said put it in the air and disconnect everything you can see. I’d start with the ACC. But you likely have nasty salt water in a connector
This is where a labscope and a network isolator cable adapter are a must. hook all the modules up and then take them offline one at a time until you see activity on the bus. Then all you have to do is check for an open, short or high resistance and power and grounds to offending module
Pardon my possible ignorance here but shouldn't a Chrysler of this vintage have a star connectors that can be used to isolate modules?
Maybe I'm the ignorant one not aware that a 2016 Jeep is considered “vintage.” Where did these last 6 years of my life go?
Hi James, The word “vintage” simply means the year made. It is not like saying antique. definition of vintage - Bing