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P38 DSE wont start after in tank pump replaced

Discussion in 'Range Rover' started by Landrover130, Dec 6, 2017.

  1. Landrover130

    Landrover130 Member

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    Used vehicle one day next would not start, after much searching no fuel out of inj pump or into it, fitted new pump into tank still wont start,then started after one run of heat plug/ prime operation. Fantastic boxed everything up and left it. Next morning it wont start,eventually got fuel up to inj pump but none out of inj pump. read about similar fault on Nanocom site, so did a fault check,
    engine immob link fault
    type too high too low high circuit
    rpm 0
    water temp 181
    occurence 15
    did security learn as per Nanocm site still no start
    then found another fault
    glow plug heater fault
    invalid fault intermitant
    water temp 197
    occurence 12
    Any Ideas I am running out of patience with P38 and TD5 disco problems HELP.
     
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  2. martyuk

    martyuk Well-Known Member

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    Security learn?

    To resync the diesel vehicles, you need to read the EMS code from the engine ECU and then write it back into the BECM.

    If you've done that and the anti-theft fault isn't coming up anymore and you get diesel to the injectors again now, then I'd be checking the glow plug timer/relay unit in next to the engine ECU. It has an 80A strip fuse in there for the glow plugs, which if that's gone then won't be helping situations... likewise if you have a couple of dead glow plugs - that can cause starting issues (especially in the cold) with the Diesel P38's
     
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  3. Landrover130

    Landrover130 Member

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    I did what I read on Nanocom site re security learn, on Nanocom P38 . EDC . Engine . Utility . Secutity Learn, maybe I stupidly thought that would re sync things, I can hear what I think is glow plug timer runing, will test voltage in morning. I have not had any imobiliser notification only traction loss come up.I know low battery can throw up all sorts of problems, so will swap battery for know good one and try again.
     
  4. wammers

    wammers STILL BREATHING. Donater

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    Security learn only works on BECMs of PAM 36 or better. You will have to read EMS code from engine ECU and then if code in BECM is different delete that write the one from the engine ECU to the BECM.
     
    Last edited: Dec 7, 2017 at 10:56 AM
  5. Landrover130

    Landrover130 Member

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    I only tried this as the person who had a similar problem was told to do it on a P38 of similar age. I dont know how to do what you say and am getting near the point of breaking both P38,s and either sticking to a TD5 110 or even going back to 300 TDI.
     
  6. wammers

    wammers STILL BREATHING. Donater

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    Look at second post in technical archives at top left side of Rang Rover section. It is a pretty simple procedure. It of course does not matter how old the car is, but what BECM is fitted to it.
     
  7. martyuk

    martyuk Well-Known Member

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    Huh? BECM makes no difference to the sync procedure - you're thinking about EKA disarm. He's talking about the 'security relearn' in the engine ECU, not anything to do with the BECM side of things. Security Relearn in the engine ECU ONLY works on GEMS petrol vehicles, as it gets told to erase whatever code is stored and take whatever the next code transmitted by the BECM is as the one it should use. All Diesel and Thor Petrol models of P38 have a hard-coded Immobiliser code programmed into the engine ECU which is read from the ECU and then programmed to the BECM so it transmits what the Engine ECU is expecting to receive. Doesn't matter what version of BECM you've got in there.

    To the OP: To resync a Diesel P38 with Nanocom:
    Power Nanocom up, Put key in ignition position II
    Go to: R-ROVER P38 -> EDC -> EDC -> SETTINGS
    At the bottom of the first page there is a box that says EMS Code - write this number down
    Press the Red 'X' 2 times to get back to the list of ECU's (screen should show EDC, Wabco C, Wabco D, GS2.38.1)
    Turn ignition off
    Press the Right Arrow at the bottom of the screen twice to go to the 3rd page.
    Screen should show HEVAC and BECM
    Press BECM
    Press Settings
    Press Alarm
    Dash display should show 'DIAGNOSTICS MODE'
    Press the Right Arrow and move across to the last page.
    The top box says 'IMMOBILIZATION CODE' with a number in the white box. This should match the number you wrote down in the engine ECU.
    If it does, then you don't have a sync problem, and there is something else going on
    If it doesn't, then press the white box, and a screen will come up.
    Erase the old code, and type in the number that was written down from the engine ECU and press the enter button
    The code should now show in the white box as the one you've just entered
    Press the Red 'X' Once
    Press 'Write Settings'
    You should get a confirmation of the settings having been written to the BECM
    Then use the Red 'X' to exit out and power off the nanocom
    Turn the ignition on, and it should start. If it doesn't, then check for diesel at the injectors - if you have diesel at the injectors, then it is in sync and something else is stopping it from starting - maybe glow plugs or timer relay fuse as I mentioned in my earlier post

    If you still don't have diesel at the injectors, then redo the above steps and check to make sure the immobilizer code was read/stored correctly.

    Hope this helps,
    Marty
     
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  8. Landrover130

    Landrover130 Member

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    Thanks for that Marty, weather very rough today might not be able to get door to shed open, it faces directly into wind if, I get in I might not get out again, will try when wind drops.
    Richard.
     
  9. wammers

    wammers STILL BREATHING. Donater

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    Or look at tech archive with photos.;););)
     
    Last edited: Dec 7, 2017 at 10:49 AM
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  10. Landrover130

    Landrover130 Member

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    Thanks Wammers, will check later. Richard.
     
  11. Grrrrrr

    Grrrrrr Well-Known Member

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  12. Landrover130

    Landrover130 Member

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    Thanks for that Grrrrrr, I did not look in Tech Archive, sorry, will try to get it going in the morning.
     
  13. Mark Piercy

    Mark Piercy Well-Known Member

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    Water temp? 181 and 197! C or F?!
     
  14. Landrover130

    Landrover130 Member

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    Immobilisation code was wrong, changed that and got diesel at injectors but not started, I dont think the battery is helping or heat plugs. Cant get new battery till next week sometime will borrow one later to try again and test heat plugs. This is a great place to live except when you need something in a rush, it just doesent happen. Temperature was as read from Nanocom must be a default setting as its not run for two weeks. I bought the Nanocom because of where we live, but they are only as good as the operator and I need to read up on its use. Thanks to everyone for the help, hopefully my next post will say its running. Richard.
     
  15. wammers

    wammers STILL BREATHING. Donater

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    Has to F can't be C.
     
  16. Mark Piercy

    Mark Piercy Well-Known Member

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    Man.. That would have been quite scary! If not on fire:eek::p
     
  17. Landrover130

    Landrover130 Member

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    Got another battery connected with jump leads and it turns over much faster, got diesel at the injectors but not an awful great amount.The immobiliser code is still the same I entered, so that seems to be sorted, I had only cracked one injector pipe off to check for diesel, I have just done three more and turned engine over till diesel came out. Obviousley full of air, will have to bend a spanner to fit last two pipes as cant get normal one on. Smoke at exhaust now, power to heaterplugs but not sure if they are all working, this vehicle has allways needed to use heat plugs even when not cold, want to get running first before I take plugs out as that may cause another problem. I am getting some where hopefully.
    You people that are more into electrical problems than me, why did the immobilisation system go out of sync?.
    Thanks Richard.
     
  18. Saint.V8

    Saint.V8 Dyed-in-the-wool 100% RR Junkie

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    That is one of the great mysteries of the P38.......they just go out of sync.....petrol more so than diesel for some reason....

    Possibly due to an electrical spike, low volts corrupting data, damp, the time of year, leaves on the line, wrong type of snow etc.....
     
  19. wammers

    wammers STILL BREATHING. Donater

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    Look at glow plugs. Low battery usually.
     
  20. Landrover130

    Landrover130 Member

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    I know I am going to have to look at them, just read a few cases of plugs breaking and dont want that extra problem,I will get diesel up to last two injectors then remove inlet manifold to get to plugs and test resistence of each one to identify any problem ones.