Back in January I posted in this thread https://www.landyzone.co.uk/land-ro...-connectors-water-damage.356064/#post-4776997 about a problem we had which has seen the vehicle off the road since November last year.
The symptoms are the vehicle will run for a few days and then randomly go through a 'cascade' failure with dozens of error codes, engine into the limp home mode and then when you turn it off, nothing works.. can't even open the boot at that point. On one occasion the car was also left in gear and you couldn't put it back into neutral. Plugging in the computer just shows dozens of errors and its impossible to see what started it.
The original line of thinking was that the problem was caused by water having corroded the wiring loom headers in the DS footwell (presumably resulting in voltage drop because of resistance that the bus then detects as an error, shutting things down).
After weeks of trying to clean up contacts, we followed the advice here, cutting and soldering all of the connections across 4 sets of headers. That seemed to solve it for a week before the same problem was back
We then traced back further to a set of headers under the rear seats with some indication that perhaps those were also oxidized. Again cutting and soldering those seemed to fix it for a week before failing again (right at the beginning of lockdown!)
At this point, we are out of ideas. I'm certain that all of the connections are good, they were professionally spliced using the neat little solder-crimp-heat-shrink connectors. Everything tests correctly.
I'm beginning to wonder now whether the fault is actually with one of the modules - ECU maybe? But I have no idea where to start with it. Any help or pointers would be hugely appreciated... at this point I have a large piece of scrap
The symptoms are the vehicle will run for a few days and then randomly go through a 'cascade' failure with dozens of error codes, engine into the limp home mode and then when you turn it off, nothing works.. can't even open the boot at that point. On one occasion the car was also left in gear and you couldn't put it back into neutral. Plugging in the computer just shows dozens of errors and its impossible to see what started it.
The original line of thinking was that the problem was caused by water having corroded the wiring loom headers in the DS footwell (presumably resulting in voltage drop because of resistance that the bus then detects as an error, shutting things down).
After weeks of trying to clean up contacts, we followed the advice here, cutting and soldering all of the connections across 4 sets of headers. That seemed to solve it for a week before the same problem was back
We then traced back further to a set of headers under the rear seats with some indication that perhaps those were also oxidized. Again cutting and soldering those seemed to fix it for a week before failing again (right at the beginning of lockdown!)
At this point, we are out of ideas. I'm certain that all of the connections are good, they were professionally spliced using the neat little solder-crimp-heat-shrink connectors. Everything tests correctly.
I'm beginning to wonder now whether the fault is actually with one of the modules - ECU maybe? But I have no idea where to start with it. Any help or pointers would be hugely appreciated... at this point I have a large piece of scrap
