Originally Posted by
red_2005_convertible
Hi SRT6exy,
Okay, you've proven that the wiring of CAN BUS from the SLA is okay. You should be reading roughly battery voltage (~12V), but not on the CAN BUS pins (I think the 0.7V across the CAN BUS is okay). I don't know off the top of my head which SLA or TCM pins are power and ground, but usually ground wires are brown, and power are red. If you find power at both the TCM and SLA, then my guess is that it's probably the SLA. Some people have had success spraying contact cleaner on the SLA circuit board, but that doesn't always work. BUT before you replace the SLA, see if plugging everything back in (you don't need to plug the center console back in), is the black rectangle still there? Will the car start? Have you cleared the DTC error codes and re-read them to see if they have changed. Also, check around the TCM for any transmission fluid - use a white Kleenex and wipe around the harness and general area. Are there water stains around the TCM area? (We're starting to get off into the less likely causes, but they do happen.)
-Jerry
The car never had an issue starting even after my problems started, I didnt try yesterday though. Ill see if it still starts tonight. I believe I tried plugging everything in and still had the black square but cannot remember if I had the TCM plugged in or not. I know I tried plugging everything back in before getting to the SLA and I definitely still had the square then, I will retry again tonight now that Ive had the SLA unplugged and post an update as soon as possible!