ABS cable disconnection

Hi, Joe,

Thank you so much so fully information, excuse me I didn't reply you quickly. 2012 Ram 1500 is a little different than your car, I take some pictures for reply your post, I found a 2011 Ram 1500 is the correct diagram in this address:
https://f01.justanswer.com/exptech2015/36b4c5a7-1ad2-4bd7-805f-937f07b30ef8_ram_1.jpg
and I take two images for the ABS module interface, it's this year car cabling terminal:
The red female terminal come with 12V in Pin 2, so Pin 41 should be the Left Rear positive cable, but can't measure the voltage when the terminal opening.
what I can do is following choice:

1) Use a new cable replace all this part cable, this need open the red terminal for a pair new cable about 3M long.
2) Use a cable tracker device to find where is the previous cable break point, they all one day job.
Hope I can finish it.
May Jesus keep your heart in the days before He comes :)

Hi, Joe,

Thank you more detail diagrams. I got my cable track tool and wait a warm day, my garage is too small to the truck, I have to keep the garage door opening when I repair the truck, but Toronto is always cold recently.
The cable tracking tool is useless, I have to use a multimeter to detect cable again, this a new result:
Both the dark green to interface 42
and the yellow to interface 41
are not break, they are good to the ABS module interface, no short between the cable.
But this dark green cable can't be found a 12V voltage, but the right rear cable can be measured a 12V voltage when the key turn on.
According to this part diagram, the male interface can't be measure the voltage when the terminal opened. The power input in the female side, only when the terminal connection, the power cable connected.
After this found, I use the ODBII monitor the four speed sensors again, it's the same result, only the left rear one no reading. Because it can't be measure the 12V when the key turn on, and the cable problem only inside the ABS module.
So, that's a lot of money and some risk to change the ABS module, Is there other possible, or how I can detect the ABS module problem? This part looks not easy to open repair.
Thank you!

A little update: previous I said the positive in #41 interface, it should #42 interface.

Hi Joe,

I watch some video in YouTube, they open the ABS module and rebuild the circuit tiny cable, that's be possible some cable broke inside the ABS module, because the 12V voltage through the ABS Module without the fuse. Maybe this is the reason the cable broke inside the Module?

I viewed some ABS Module images and video, the more easy way is to buy a used Module, disassembly the circle side and replace my one, if this is possible, I don't need to touch the brake oil tube and valve.
Hope I can finish it and share the details to you. :)
Be in Peace.
Thank you!

Hi,

It looks really excited when you finish the task. :)
I order a used module from eBay, with same part number.
But first task is remove 3 broke bolts from engine, the popular Exhaust Manifold problem
Try to find some better tool to match the challenge.

Take care and be in Blessed from The most High,
Philip

Sorry, it pack for half year because I can't remove the broken bolts in Exhaust Manifold, if someone can suggestion experience mechanic in this area of Toronto, please let me know.

I had to install the Exhaust Manifold back in a little leak situation. It's better than it was.
This time new ABS model replace directly as a comparison, another module coming, I can't find my record now, but it means:
1) the ABS Module should be initiated
2) all the four wheel speed sensor can be found, but the new replaced one in the Left Rear, the data is not same with the other three sensors, this make the brake pedal shocking in every time normal brake,
This looks the ABS module is good, but really require a initiated, this part should include two parts, the ABS module communicate with ECU correct; and the four wheel speed sensor should correct in same data.
I have two option:
1) use the new ABS module, but have to found a device to initiate the ABS module, it take some time to research and buy a new device maybe
2) repair the old ABS module, only need to correct the new Speed sensor sync with other 3 sensors

The better way to check the circuit is remove the abs electrical cover and keep it connect to cable, let the key to turn on, this moment can measure each input pair voltage, it looks the left rear still a little problem, not sure the cable is a little shorting

After more than one year, the problem gone!
Conclusion:
1) ABS module lost one resistor
2) ABS sensor broken in the left rear (maybe I broke it when disassembly)
3) The left rear parking brake assembly is almost left nothing, because the salted road in all the winter, It only 4 fixed bolts left, replaced new brake base, finally it works when the speed sensor tone ring changed. This old ring got some teeth breaking when the packing brake was destroyed.
It's really a big project, a general mechanic should change my ABS control model, the two-packing brake assembly, ABS speed sensor, speed tone ring, that's a lot of job and trying :)
Put the pictures:
1)the original OBD error code:

2)the wrong OBD speed status log:

3)the correct OBD speed log:

4)the lost resistor in ABS controller: without this resistor, there is no voltage in the left rear ABS cable

5)the old speed tone ring: only a little breaking in teeth, changing this one is not difficult as I thought, only a hammer is OK, but it requires remove the rear axle, this should open the rear differential. I made a mistake in first time, few gears fall down from the rear differential, should lock it immediately after remove the locking ring.

Thank you, Joe, hope you do everything well, always in peace. :)