Nanocom Short. OBD2 + Transmission Issues
I didn't see any moisture or reside it could've left behind.
Bent pins is a good idea actually, good one Extinct!
But also-- you said water is getting in. Bingo.
The water runs behind all the panels - behind headliner, behind a-pillar and dash, behind kick panels, right onto fuse boxes and BCU’s. You’d almost never know it was there and most people don’t. You can have a small stain on the headliner from the sunroofs or roof rails, but that’s enough indication that there could be over time harness and connector/BCU/Fusebox damage down below especially if the leak and water has been happening for years. I’ve seen it many times on D2’s.
At least 50-60 % of D2’s I see in salvage yards have unusable drivers side fuseboxes from water ingress corrosion, FYI. I pull every one I see in hopes it may be a good spare since they are NLA. It’s not rare. BCU’s far less. 10%-20%? Plastic wire connectors near BCU - more likely.
Good luck, Sounds like you’re well on the hunt to resolution.
But also-- you said water is getting in. Bingo.
The water runs behind all the panels - behind headliner, behind a-pillar and dash, behind kick panels, right onto fuse boxes and BCU’s. You’d almost never know it was there and most people don’t. You can have a small stain on the headliner from the sunroofs or roof rails, but that’s enough indication that there could be over time harness and connector/BCU/Fusebox damage down below especially if the leak and water has been happening for years. I’ve seen it many times on D2’s.
At least 50-60 % of D2’s I see in salvage yards have unusable drivers side fuseboxes from water ingress corrosion, FYI. I pull every one I see in hopes it may be a good spare since they are NLA. It’s not rare. BCU’s far less. 10%-20%? Plastic wire connectors near BCU - more likely.
Good luck, Sounds like you’re well on the hunt to resolution.
My next step is going to see if Theres any voltage getting to the OBD2 port. I can't think of anything else to try.
Well the issue was pretty simple. Fuse #20 in the fuseblock under the steering wheel was blown. It should've been a 20amp but for some reason mine had a 15 amp in it. Swapped it out and everything works perfectly! Including the transmission issues.
I can conclude that I'm an idiot and when I checked the fuses, I checked the left side of the terminal for voltage. Not the right side which I should've done.
I can conclude that I'm an idiot and when I checked the fuses, I checked the left side of the terminal for voltage. Not the right side which I should've done.
I should note I downloaded and printed out the wiring diagram for the OBD2 port to find where the electricity should've been flowing. F20 label doesn't show what it goes to, but rather just to look it up in the manual.
It goes Battery -> Link 3 (50amp fuse) -> F20 (P101) -> a header (K109)) and then to the diag socket. No clue how or why it impacts the TCU/BCU/ECU etc. If someone know I'd be interested in learning.
I noticed a few other odd things that I don't understand. Such as no voltage going between Link 3 and the wire that goes to F20, despite the circuits working. I could be measuring the wrong thing or not measuring correctly. The green checks means I was able to measure 12V through it. Red X means no voltage coming out. No clue why its that way. But everything is working and I'm not going to mess with it unless I need to.
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