I'll take a look, what did you use to clean the connector? Was X15 full of corrosion?
It's possible that the corrosion went down into the wiring under the insulation, it does that eventually, the corrosion just keeps growing and will just get into everything
Was it F5 or FL5?
Fuse F5 5amp goes to the Instrument Cluster, only hot with key On
Ok F5 goes from the Immobilizer unit to that Fuse panel then to the Starter Motor diode and also to the instrument cluster.
We have to find out how corroded the fuse panel is and x15. It's obviously really bad, my guess is if you were cleaning it with the spray, the corrosion either got farther into x15 or into the fuse panel. The problem is they solder those fuse panels together in layers most of the time, and if you can't get the plastic housing off of it to inspect the damage, there's no way of knowing how much is in there. With no power at F5 the car may not even start now, since it's part of the security system.
Are you able to check that no pins on any connectors going to the fuse panel or the x15 connector got spread apart while cleaning? With pins that are heavily corroded and have been for some time, the pins become weak and sometimes even break right off because they have been like that for so long, If you think about it like rust for an example, rust causes metal to pretty much disintegrate. It's the same with gangrene and the white crusty corrosion that happens in vehicles, it's all the more worse with a vehicle that has a water intrusion issue. This could have been like this for years, and its just now starting to fall apart because you're doing something about it. This car would have become a no start shortly regardless, At least you know where the issue is. Some people replace computers and modules over issues like this. And they never fix the car. If you end up replacing the fuse panel and a few connectors, that's a lot better than a $2,000 dollar computer, by far.
Below is the X10199 comes from the Immobilizer Unit to Fuse F5 and goes back out to the Instrument Cluster on this connector X10200.
Also 5th diagram X10205 is for Fuse 36, pin 1 of the DLC
And the X10200 is also for Fuse 3, pin 16 of the DLC.
Last one, last 2 diagrams, that connector X10178, pin number 1 on that connector feeds power to that whole fuse panel on a Red/Yellow wire, it will be a higher gauge wire because its powering up so many components. The Red/Yellow wire comes from the Fuse Panel in the engine compartment from Fuse FL2 50amp.
Images (Click to enlarge)
Wednesday, August 10th, 2022 AT 1:16 PM