sierrafery said:
check the plug's pin disposals in the pic i posted, are you sure you measured across pins 1 - 2(first and second pins from left cavity side) with connector unplugged? pin 1 should be black/green not green/black according to the diagram, it's not the same thing(first is the main colour/second the trace on the wire)...if you measured well and the solenoid checks out with 5 Ohm as you said while you get 1.4 at the C0647 there is a wiring issue on that circuit, check at C2396 cos it might be corrosion in that but at least you found the problem and in the worst case you can rewire that path
Click to expand...
At C2396 male half , and check resistance back to pcv , on the block , this at 5.0 ohm . Individual line check back to module with green plug off, 0.3/and 0.5 . A good deal of wet around the perimeter of C2396 . Will dry off and reconnect. 1hour later plug cleaned with electrical cleaner , no apparent corrosion , just wet , could have been for a while, rejoined measured 5.0 ohm!
Module plug back in , cleared code , RESULT!! so far at least, will try out on Road tomorrow . Many thanks , thank you for sticking with it and your guidance .
 
Last edited:
alfapat said:
At C2396 male half , and check resistance back to pcv , on the block , this at 5.0 ohm . Individual line check back to module with green plug off, 0.3/and 0.5 . A good deal of wet around the perimeter of C2396 . Will dry off and reconnect. 1hour later plug cleaned with electrical cleaner , no apparent corrosion , just wet , could have been for a while, rejoined measured 5.0 ohm!
Module plug back in , cleared code , RESULT!! so far at least, will try out on Road tomorrow . Many thanks , thank you for sticking with it and your guidance .
Click to expand...
The dreaded JLR wet connector syndrome. Well done for sorting it out.
 
Hey HO it didnt last ! One week and now the modules connected to give messages to Active roll , decide to give out a bad connection from the rear height sensor and threw out the the roll light to amber again.
 
Spray won't remove corrosion - the only permanent fix is to replace the connector & receptacles.

TE CONNECTIVITY 6 WAY AUTOMOTIVE CONNECTORS

www.auto-click.co.uk www.auto-click.co.uk

If you want to reduce contact fretting or fill the cavity with dielectric grease to exclude moisture from the replaced connector, then Nyogel 760G is the correct stuff to use.
 
alfapat said:
Hey HO it didnt last ! One week and now the modules connected to give messages to Active roll , decide to give out a bad connection from the rear height sensor and threw out the the roll light to amber again.
Click to expand...
Is it the same fault code?
 
No its not the same , , a whole heap a module mis matches then when cleared the one that remains is under suspension , the rear right height indicator . Still the same Dynamic roll light which go out on occasion
Graculus said:
Spray won't remove corrosion - the only permanent fix is to replace the connector & receptacles.

TE CONNECTIVITY 6 WAY AUTOMOTIVE CONNECTORS

www.auto-click.co.uk www.auto-click.co.uk

If you want to reduce contact fretting or fill the cavity with dielectric grease to exclude moisture from the replaced connector, then Nyogel 760G is the correct stuff to use.
Click to expand...
All back together now but will have a look , its just a lot of work to remove the inner arch protection. Something liker this perhaps?Amazon product
Till it picks up the fault again I will have a look at your suggestions , thanks , it all makes sense. Now to this height sensor!
 
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So the following tell tale signs of the height sensor playing up . IMG_1274.pngIMG_1275.pngIMG_1276.pngIMG_1277.pngHopefully will find the fault today .
 
alfapat said:
No its not the same
Click to expand...
Means that the original fault with the PCV is still fixed... maybe the same bad contact issue is present in other connector(s) too and they occur one after another so check the relevant connectors... was th vehicle exposed for long to salty moisture near a beach or something?
 
No in general the roads are salted here a lot because of our weather .up here, before my ownership who knows , I have owned since 2021.Anyway the plug is off just now and Ill clean with elect contact and put back on with some Vaseline around plug shell and try diag clearance.
 
I'll check later when i'll have some time maybe there is a connector which shares the links between the suspension module, the active stabilisation module and ABS cos those two U codes are in two different modules:
1. ACTIVE STABILIZATION SYSTEM
1711195178139.png

2. ANTI-LOCK CONTROL - TRACTIONCONTROL
1711195240744.png


IMO it's something similar like with the PCV fault, a bad contact in a connector somewhere and these faults would trigger the dynamic roll warning too i suppose cos these systems are all connected
 
sierrafery said:
I'll check later when i'll have some time maybe there is a connector which shares the links between the suspension module, the active stabilisation module and ABS cos those two U codes are in two different modules:
1. ACTIVE STABILIZATION SYSTEM
View attachment 313308
2. ANTI-LOCK CONTROL - TRACTIONCONTROL
View attachment 313309

IMO it's something similar like with the PCV fault, a bad contact in a connector somewhere and these faults would trigger the dynamic roll warning too i suppose cos these systems are all connected
Click to expand...
Looks like faulty sensor , plugged a new one I had for front and it shows voltage on the diagnostic .
 
alfapat said:
Looks like faulty sensor , plugged a new one I had for front and it shows voltage on the diagnostic .
Click to expand...
That was for the C1A06 code which was quite obvious and i didnt even mention it, so now the U codes are all gone as well?... interesting
 
sierrafery said:
That was for the C1A06 code which was quite obvious and i didnt even mention it, so now the U codes are all gone as well?... interesting
Click to expand...
No not necessarily, only verified that the new sensor I had by chance is showing a varying voltage when moving the small arm attached, but at least it proves that the modules might be a bit happier. I will see if whole the new borrowed sensor clears the whole list of module communications .
Meanwhile new sensor ordered fro Lrdirect £53
 
New sensor fitted , no warning lights as in Suspension and dynamic roll , all faults cleared , but vehicle still leans to the right as after 3 or 4 days waiting for the level sensor the air supply had given up. After installing the sensor the computer fails to synchronise the four corners especially if I select lowering on eas switch the vehicle goes up to Off road and leaves the right hand side behind .
I am guessing some sort of reset is required, maybe disconnect battery for a while . Not sure what Gap can do at this stage other than guided height reset .
 
alfapat said:
I am guessing some sort of reset is required, maybe disconnect battery for a while . Not sure what Gap can do at this stage other than guided height reset .
Click to expand...
It definitely needs some action with the diagnostic tool, nanocom has a "height calibration" option for RRS, the GAP tool should have something similar too
 
What’s the best way of resetting the ecu that controls the height on RR. Now that the new height sensor has been fitted and the suspension over 4 days had dropped to one side it doesn’t want to play. Switching up or down the car goes to opposite levels though some of the height has been restored it’s not correct . The fault has cleared for the rear height sensor , so that’s good . Maybe battery reset?
 
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