1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

L322 Immobiliser issue

Discussion in 'Range Rover' started by sockfish, Nov 8, 2016.

< Previous Thread | Next Thread >
  1. sockfish

    sockfish New Member

    Joined:
    Sep 7, 2014
    Posts:
    8
    Likes Received:
    0
    Location:
    Coulsdon, Surrey
    Hi all,
    Hopefully somebody here can help (I emailed Saint v8 yesterday but the situation is getting desperate(ish)!)
    Ok - so my 2005 L322 4.4 has just had an engine rebuild. It has been a convoluted process but we are finally there except....the blimmin' thing won't start.
    The engineer (who has been supremely patient and helpful) has done everything possible and has, basically, narrowed down the issue to what looks like the Immobiliser ECU - voltage is present at the starter motor as well as the ECU. The Engine ECU is throwing up a fault (using Allcomms) "Immobilsation ECU Interface Fault" as below. I cannot clear this:-

    upload_2016-11-8_10-42-35.png

    The key does everything it should - remote locks and unlocks, turns fully all the way in the ignition barrel. I do not have a spare although it would seem unlikely to be helpful if I did.

    So, assuming it's the Immobiliser ECU at fault, what is involved in getting a new one installed? They seem to be relatively cheap but does it mean a trip to a main dealer to do any re-programming?

    Any help greatly appreciated and accepted.
    Dave.
     
  2. holidaychicken

    holidaychicken Well-Known Member

    Joined:
    Jun 30, 2013
    Posts:
    3,765
    Likes Received:
    939
    Location:
    Kent
    The EWS immobiliser ECU generates a code that needs to match the engine ECU and mine used to lose its programming if I disconnected the battery and it would crank but not start. The only solutions I found was the guy from main dealer came out with T4 testbook and resynced it which takes 5 minutes, the first time I had the RR taken on a lorry to the dealer, and the option I have now is to use my Faultmate which can also reprogram the link.
    The fault you have from allcomms isn't the same as I had, if you search my threads of cranks but won't start you will see what I had.
    I believe the EWS immobiliser if faulty can be replaced and reprogrammed as long as the original engine ECU is present and that matches the key and ignition barrel etc.
    Allcomms cannot program the link
    What have you changed regarding ECUs?
     
  3. sockfish

    sockfish New Member

    Joined:
    Sep 7, 2014
    Posts:
    8
    Likes Received:
    0
    Location:
    Coulsdon, Surrey
    Hi Mr Holiday,
    I haven't changed anything at all yet - this situation arose as a result of having my engine rebuilt (nothing electrical) but the battery has been disconnected for a while which, I guess, has caused the issue.
    In my case, the engine doesn't even crank as (I'm told) there's no cranking signal being sent.
    Which dealer did you use?...in my experience they are not overly helpful but I suppose I can ring my local one (Harwoods, Coulsdon) and see what they say. Or maybe investigate a Faultmate!
    Regards, Dave.
     
  4. sockfish

    sockfish New Member

    Joined:
    Sep 7, 2014
    Posts:
    8
    Likes Received:
    0
    Location:
    Coulsdon, Surrey
    I just spoke with the local dealer who said I'd need to bring the car in, they'd need to do their own diagnostics etc., they can't do anything until the 22nd November and it's £100/hr + VAT. Helpful.
     
  5. holidaychicken

    holidaychicken Well-Known Member

    Joined:
    Jun 30, 2013
    Posts:
    3,765
    Likes Received:
    939
    Location:
    Kent
    i used guy salmon at maidstone and they were really helpful and £100 / hr + vat but i did get 10% discount as my car is over 10 years old, i think they look at it as charity to help those that can't afford a new RR.
    I can imagine if you if you take what is basically an old BMW into some RR main dealers they will kind of look at you as if you are eating a live baby:eek:

    I have attached the help files fro the EWS ecu form my Faultmate software and the Faultmate i think is the best software / hardware you can get for the RR but i would say that as i have one but the amount of detail and information that comes with the kit is incredible.
    Have a read through and try and understand what yours is doing or not but your fault is different to mine as mine would crank but in theory you shouldn't really lose the ECU programming for disconnecting the battery so i suspect mine is also faulty although when i only disconnect the positive terminal it doesn't lose its link??

    EWS 1.jpg EWS2.jpg EWS3.jpg EWS4.jpg
     
  6. sockfish

    sockfish New Member

    Joined:
    Sep 7, 2014
    Posts:
    8
    Likes Received:
    0
    Location:
    Coulsdon, Surrey
    Thanks Holiday,
    I have ordered a replacement (second hand) immobiliser ECU off eBay. We'll get that installed and then try and find someone to reprogram it.
    If anybody has any recommendations as to who might be able to do that?
    I didn't realise there were quite so many pitfalls with RR ownership!,
     
  7. gold rover

    gold rover Well-Known Member

    Joined:
    Nov 22, 2010
    Posts:
    5,056
    Likes Received:
    2,461
    Location:
    Scotland,
    Welcome to the jungle, we got fun an' games
    We got every fault you want, honey, we know all the names
    We are the people who can find whatever you may need
    If you got the money, honey, Range Rover's your disease ;)
     
  8. holidaychicken

    holidaychicken Well-Known Member

    Joined:
    Jun 30, 2013
    Posts:
    3,765
    Likes Received:
    939
    Location:
    Kent
    Nice, like a bit of Guns N Roses
    The last part of my attachments is what you are looking for which is syncing the immobiliser and engine ECU, it is certainly worth a try, failing that you need a good Indy or main dealer with T4, faultmate, i think Autologic, not sure on GAP Diagnostics IID tool but you could email them and ask and if it will do it then i would get one of those and kill two birds with one stone as you will need diagnostics anyway
     
  9. gold rover

    gold rover Well-Known Member

    Joined:
    Nov 22, 2010
    Posts:
    5,056
    Likes Received:
    2,461
    Location:
    Scotland,
    As soon as I read comment about pitfalls the first line of the song jumped into my head :D
     
  10. Karen3492

    Karen3492 New Member

    Joined:
    Nov 10, 2018
    Posts:
    1
    Likes Received:
    0
    Location:
    Northern Ireland
     
  11. holidaychicken

    holidaychicken Well-Known Member

    Joined:
    Jun 30, 2013
    Posts:
    3,765
    Likes Received:
    939
    Location:
    Kent
    I would t even know where to start unless your battery is dying as a totally different vehicle to what I’ve been involved with, you basically have a disco.
    I would copy and paste your information above as it can’t be seen as you have added it to the quote and start a new thread with the Range Rover sport heading.
    Plugging in to Diagnostics would be second after battery health and alternator check.
     
  12. PTSchram

    PTSchram Member

    Joined:
    Jan 13, 2019
    Posts:
    16
    Likes Received:
    0
    Location:
    Churubusco, IN USA
    I am glad this thread is still alive

    I am working on an '05 L322 that won't crank/start

    My Snap-On Solus Ultra can communicate with some of the systems, not all, and lacks a mechanism by which to resolve
    The Solus returns an EMS DTC of 148 Interface For immobilizer

    As I couldn't resolve via that, I purchased to BlackBox-Solutions module for EMS and Immobilizer, but the truck refuses to communicate via the Rovacom

    Any suggestions?

    Additional info on the truck. When I open a door, all the marker lights flash

    Thanx
     
  13. Doo

    Doo Well-Known Member

    Joined:
    Jun 2, 2016
    Posts:
    3,184
    Likes Received:
    1,572
    Location:
    City of a thousand clowns...
    Sure you don't mean Guns & Rovers? :D
     
    PTSchram likes this.
  14. PTSchram

    PTSchram Member

    Joined:
    Jan 13, 2019
    Posts:
    16
    Likes Received:
    0
    Location:
    Churubusco, IN USA
    Is that website still around?
     
  15. PTSchram

    PTSchram Member

    Joined:
    Jan 13, 2019
    Posts:
    16
    Likes Received:
    0
    Location:
    Churubusco, IN USA
     
  16. holidaychicken

    holidaychicken Well-Known Member

    Joined:
    Jun 30, 2013
    Posts:
    3,765
    Likes Received:
    939
    Location:
    Kent
    Is it petrol or diesel and do you have a touch screen sat nav ?
     
  17. PTSchram

    PTSchram Member

    Joined:
    Jan 13, 2019
    Posts:
    16
    Likes Received:
    0
    Location:
    Churubusco, IN USA
    Petrol, yes.

    My biggest concern is that my Rovacom-Lite, DEC SuperScanII, and Launch Millenium cannot communicate with the truck, but my Snap-On Solus Ultra can.

    More disheartening is that I bought the software modules specifically for this truck in hopes of being able to resynchronize the immobilizer to the EMS ECU. Snap-On refuses to have anything to do with anything that could ever be construed to be "Security" programming related, as a result, no functionality exists for this truck.

    Worse yet, this truck only has the left front door that will open and the truck is OUTSIDE my shop where it is currently -10C and 10 cm of snow!
     
  18. Saint.V8

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

    Joined:
    Apr 27, 2008
    Posts:
    15,728
    Likes Received:
    1,678
    Location:
    Surrey - Near the middle, close to some green bits
    Didn't think the L322 EWS system has a security link to the Engine ECU....the EWS (immobiliser) system detects the presence of the correct key transponder and this releases the start relay to allow the engine to crank....the Engine ECU cares not about anything other than a 'start' signal.

    The P38 had a security link between BeCM and the Engine ECU.....where both needed to have the same code that they checked with each other each time the car was 'asked' to start....but the L322 uses a transponder in the key and pick up coil in the ignition switch and as long as the transponder code is correct, the EWS ECU allows the engine to start.
     
  19. PTSchram

    PTSchram Member

    Joined:
    Jan 13, 2019
    Posts:
    16
    Likes Received:
    0
    Location:
    Churubusco, IN USA

    Curious. The BlackBox Solutions software has a function to place the EMS ECU into a mode where it will send a code to the ECU and the EMS ECU is put into a mode to accept the code.

    In the case of this truck, it definitely shows a DTC for an immobilizer issue in the EMS DTCs

    From the BlackBox website

    "
    Synchronize with engine management system This function causes the immobiliser ECU to send out repeated codes so that when used in conjunction with the LEARN feature on the engine management ECU, that it can synchronise itself to the EWS 3D immobiliser.
    The function should be used only after setting the engine management ECU in learning mode.
    The synchronization procedure is done in three steps that should take place in one ignition cycling.
    1. Put the engine management in learning mode: This function is to be found in the engine management START SYNCHRONIZATION WITH IMMOBILISER ECU. The function will set the ECU into learning mode. Once you've been prompted that the engine management is in learning mode, navigate in the Vehicle Explorer to the immobiliser for step 2.
    2. Send code from immobiliser ECU: This function is to be found in the immobiliser. This function will send codes to be learned. Once you've been prompted that the immobiliser sent the code successfully, navigate in the Vehicle Explorer to the engine management for step 3.
    3. Take the engine management out of learning mode: This function is to be found in the engine management END SYNCHRONIZATION WITH IMMOBILISER ECU. The function will end the learning mode, leaving the ECU in normal mode.
    Further on page 18-2-16 of the FSM in the discussion of theory of operation of the Bosch MEMS 7.2 EMS, "Immobilization signal (from immobilization ECU)

    Page 18-2-37 lists three DTCs (none of which are consistent with what my Snap-On Scan tool indicates and with what Sockfish stated that began this thread.) related to Immobiliz(s)ation ECU. Further down on page 18-2-37, another six DTCs are listed as being related to EMS ECU communications with the Immobiliz(s)ation ECU.

    Page 86-15-3 Further describes the operation of the Immobiliz(s)ation ECU.

    What is further confusing the issue is that the ignition key turns as it should, providing presumptive proof of some degree of concordance between the key and the Immobiliz(s)ation ECU.

    There were no DTCs stored in the "Body Processor Module" when queried by the Snap-On tool
     
  20. Saint.V8

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

    Joined:
    Apr 27, 2008
    Posts:
    15,728
    Likes Received:
    1,678
    Location:
    Surrey - Near the middle, close to some green bits
    Yep....looks like I was mis-informed or as your President would say 'mis-spoke'....

    upload_2019-1-14_17-42-32.png

    There is a rolling code between the EWS ECU and the ECM ECU......so yes, there appears to be a 'learn new code' issue....I doubt Rovacom Lite would be able to do it and you'd need something like the BBS Faultmate Extreme or something with some clout like the Land Rover T4 system to get the security system to relearn....Solus is not a LR specific system and as such may not have the right security protocols to force a re-learn of the rolling code.
     
< Previous Thread | Next Thread >