L322 2011 Engine to Main loom connectors water damage

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benstone

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11
Location
Hampshire
I have a 2011 L322 Vogue SE (TDV8, Auto) that has had worsening intermittent electrical problems that have finally resulted in major time off the road (cascade faults reported, limp home then shutdown and dead).

The garage (owned by a great mate of mine, so no bull and they are doing the work FOC so no worries there - also do a ton or RRs) have been working on it with the thought that the problems is routed in water ingress (submerged) connectors (corroded pins etc) located in DS footwell (3 in total I think including one that is 50-something way) that they identified, dried out and then cleaned up (with a couple of pins bypassed because the corrosion was so bad) in an attempt to fix. The error codes show multiple instances of voltage drop with no particular sequence or pattern.

Each time we have tried, the vehicle has been OK for a bit (a day or so) and then the fault has returned :(

Of course, it is entirely possible that the problem is being caused by something else - a faulty module perhaps (any other suggestions welcome), however, we would like to eliminate the connectors entirely as a source which means replacing them, or more precisely the pins which will then rule this out for further diagnosis (if it is needed).

The problem is that the connectors and pins don't seem to be available from JLR. They say that only the whole loom is available (£4K?) which is clearly a non-starter.

So, I wondered if anyone could advise? I imagine that the pins must be available - perhaps by cannibalising another kit, trouble is working out what is needed. Posting here in the hope that someone can point me in the right direction :)
 
I have a 2011 L322 Vogue SE (TDV8, Auto) that has had worsening intermittent electrical problems that have finally resulted in major time off the road (cascade faults reported, limp home then shutdown and dead).

The garage (owned by a great mate of mine, so no bull and they are doing the work FOC so no worries there - also do a ton or RRs) have been working on it with the thought that the problems is routed in water ingress (submerged) connectors (corroded pins etc) located in DS footwell (3 in total I think including one that is 50-something way) that they identified, dried out and then cleaned up (with a couple of pins bypassed because the corrosion was so bad) in an attempt to fix. The error codes show multiple instances of voltage drop with no particular sequence or pattern.

Each time we have tried, the vehicle has been OK for a bit (a day or so) and then the fault has returned :(

Of course, it is entirely possible that the problem is being caused by something else - a faulty module perhaps (any other suggestions welcome), however, we would like to eliminate the connectors entirely as a source which means replacing them, or more precisely the pins which will then rule this out for further diagnosis (if it is needed).

The problem is that the connectors and pins don't seem to be available from JLR. They say that only the whole loom is available (£4K?) which is clearly a non-starter.

So, I wondered if anyone could advise? I imagine that the pins must be available - perhaps by cannibalising another kit, trouble is working out what is needed. Posting here in the hope that someone can point me in the right direction :)
Cut the wires one at a time, solder the ends together and insulate with glue filled heat shrink, end of problem for ever. A badly corroded connector is often unrecoverable because there is tracking withing the plastic.
 
We had considered that but I was concerned that soldering the connections (or replacing the connectors with alternatives) might be problematic with the resistance of joint etc. Sounds like you have had experience and it isn't. I appreciate the input.
 
We had considered that but I was concerned that soldering the connections (or replacing the connectors with alternatives) might be problematic with the resistance of joint etc. Sounds like you have had experience and it isn't. I appreciate the input.
A soldered joint done properly will have a lower resistance than connector pins and will never fail.
 
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OK, done. In fact, we did everything.. Both sides and all the connectors. Cut, soldered and sealed 100-and-something. The problem seems to be solved. Thanks to everyone for your help.
 
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