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L322 IID Tool - Faults

Discussion in 'Range Rover' started by Sabbsy, Oct 12, 2018.

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  1. Sabbsy

    Sabbsy Member

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    Got a number of faults to clear following running IID tool diagnostics. They include:

    0x58 Precharge Pump
    0xA0 Driver door mirror heater: open circuit
    0x32 CAN bus fault
    0xBD EBV function fault received from ABS ECU
    0x57 Air Suspension active/inactive

    Any guidance, is there somewhere you can types these codes into and it provides the solutions?

    Any help always appreciated.
     
  2. Saint.V8

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

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    Your ABS Precharge Pump is kaput....this will introduce the CAN fault, and Air Suspension Fault (as it shares the same CAN - and will go into soft fault in sympathy) EBV - I think this fault will always pop up with the L322 ass it is a function it doesn't have (reserved for the BMW models the system is derived from) and your door mirror heater circuit is defunct!

    Can I assume you have the ABS/DSC/HDC warning on the dash too?
     
  3. Sabbsy

    Sabbsy Member

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    You are correct Saint.V8. Are there any video clips how to replace the ABS prepaid pump?

    Thanks for the advice.
     
  4. Saint.V8

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

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    the RAVE manual should give you a step by step guide it its replacement.



    I wonder who the smooth talker is on that vid :D:D:D:D:D:D
     
  5. Sabbsy

    Sabbsy Member

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    Cheers matey
     
  6. kds

    kds Well-Known Member

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    Not a clue but he does sound like a dyed-in-the-wool 100% RR Junkie.
     
  7. Sabbsy

    Sabbsy Member

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    I replaced the pump and still the same error message, ideas?
     
  8. Sabbsy

    Sabbsy Member

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    I replaced the pump and still the same error message, ideas?
     
  9. Sabbsy

    Sabbsy Member

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    Saint.V8,

    I replaced the precharge pump and the error messages are still shown:

    0x58 Precharge Pump
    0xA0 Driver door mirror heater: open circuit
    0x32 CAN bus fault
    0xBD EBV function fault received from ABS ECU
    0x57 Air Suspension active/inactive

    When I removed abs module connector I noticed the following

    [​IMG]
    [​IMG]
    [​IMG]

    What you recommend, send abs module connector or do the ABS Short Harness replacement, not £30.02 any more though.
     
  10. gstuart

    gstuart D3 Grandad

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  11. Saint.V8

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

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    Soooo.....looks like there has been some dampness and it has been shorting between pins by the looks of it.

    I gave the reccommendation of the pre-charge pump from your diagnostics report - I would have assumed the first thing to have checked was the wiring connection to the ECU, but no matter. I trust you tried to clear the faults out of the ECU and the same ones have returned?

    You *may* get away with giving it a good clean up and job done, but it does look like it has been arcing across and has got damp in. The most common place for damp to get in is through the harness as per the tech bulletin, and the 'fix' was to replace the short harness to ensure the connector is clean and the loom is resealed.

    Now, and I am not saying this is the issue, but we also don't know what effect this arcing between pins has had on the ABS ECU.....it could be fine, but similarly, once the short harness has been replaced and the ECU connector cleaned up, you could still have the same issue as the ABS ECU has been fried from the shorting across the pins......that is something we don't know - all we do know is that the connector and pins have corrosion and we don't know how that has affected the ECU....

    If it was me, I would replace the short harness as it is obvious there is an issue with the connector and the possibility of moisture having been introduced into the loom. Then clean up the ECU connectors and plug it all back in and see if you can clear the faults.
     
  12. Sabbsy

    Sabbsy Member

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    Thanks Saint.V8 I will get the short harness on order, think its around £80 now unless you know somewhere cheaper. If the error faults remain do you know of anyone who could test the ABS module. New to the sequence of events hence replaced the pre-charge pump first.
     
  13. Saint.V8

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

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    Before forking out on more money - when you say you still have the same faults, did you try clearing out the old faults and they have come back?
     
  14. Sabbsy

    Sabbsy Member

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    Tried clearing with GAP IID tool and same errors appear.
     
  15. Saint.V8

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

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    Have you had the back off the connector and checked the pins from the rear to see if there is further corrosion?

    What you could do is give the connector and the ABS ECU a damn good clean up with some decent contact cleaner and see if it helps and allows you to clear the faults.

    The trouble is, you could fork out £80+ on a replacement short harness and the fault is actually in the ECU (or other).....you could fork out for a replacement ECU and the fault is the harness (or other)

    As I mentioned in my 2 or 3 threads where I was chasing an ABS fault of my own, the ABS ECU is a known failure item due to heat fatigue, I replaced the short harness and it didn't solve it, and in the end it was an internal failure of the ABS ECU.....

    There is a company that can test the ECU I believe something like ECU Reman or BBA Reman or something like that - mainly the Bimmer ECU - but it is the same ECU just coded for the L322.

    I would do some research on the company and see if they can do a test on the ECU before hacking the loom apart - that way you are trying to eliminate variables as cheaply as possible. But looking at the state of the connector, I would be looking at replacing the short harness in any case as the connector has definitely suffered along the way somewhere.

    Only you can decide if you want to fork out £80+ on a loom and then a further £££ on an ECU or further diagnostics if that doesn't solve it.....
     
  16. Sabbsy

    Sabbsy Member

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    Saint.V8 appreciate the advice and I do agree that its like chasing our tail and you never know what will fix the problem. I will check out the test on the ECU, found the site:
    http://www.bba-reman.com/gb/index.aspx
     
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