Results 1 to 7 of 7

Thread: TD5 issue.

  1. #1
    Join Date
    May 2015
    Location
    Williamstown, Victoria
    Posts
    1,896

    TD5 issue.

    Problem of the day.


    It is a 1999 Land Rover Defender TD5 and I need someone to test and repair as necessary the ECU part number MSB101170.


    It has all the classic signs of ECU failure with engine starting then stopping immediately and error messages such as Topside Switch Failed Post Injection and Pre Injection along with Peak Charge Short and Open Circuit Detected errors recorded for all 5 injectors. There is no oil in the ECU plugs. The injector wiring loom under the rocker cover has been replaced and the loom from the ECU to injector plug has been checked for integrity as well as resistance and shorts. The 85V output from the Injector Common 1 and 2 output (pins A22 and A23) drops to 0V just before the engine stops. CPK has been replaced although the old one was OK. This has been checked and a signal is transmitted to pin A13. Fuel pressure has been measured and is only slightly below spec.
    D2a Td5 Manual, Chawton White. aka "Daisy"
    Build date 11th Oct 2002
    Freelander 2 2011, manual, the daughter calls it Perri
    Before I had a Land Rover I did not have any torque wrenches. Now I have three.

  2. #2
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
    Posts
    25,539
    board dry jointing, it might also be a short in the supply to the ecu grounding the feed to the ecu.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    TDI D1(parting/ed)
    Tdi autoManual d1 (Kept it for the girlfriend)
    Archaeopteryx 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  3. #3
    Join Date
    Mar 2016
    Location
    Adelaide
    Posts
    1,398
    Good time to remap it maybe?
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"

  4. #4
    Join Date
    Jul 2014
    Location
    west of Transylvania
    Posts
    3,008
    That ''topside switch" thing is about a RC charging circuit within the ECU which contains those two big capacitors and some resistors, a circuit like this has a transient response time which can be shorter or longer hence the pre or post injection thing... the gist is that once a "topside switch failed ..." fault is current(regardless that it's pre or post injection) there is a problem with the capacitor(s), with a resistor or with the PCB so you can't rely on that ECU anymore cos it can cut out while driving unexpected or it can become unstartable so better get hold of a replacement ECU or send your's to a ECU repair specialist ASAP. .... possible symptoms described better here Defender ECU problem
    Discovery Td5 (2000), manual, tuned

  5. #5
    Join Date
    Nov 2018
    Location
    Sydney
    Posts
    108
    What tool did you use to pull out all the fault codes? Could the tool clear any faults it found?

    I haven't had any Nanocom for my TD5 but recently we used a MAXI Tool scanner which could diagnose many sections in a TD5 (either fault codes or live data) in both Manual and Auto, also it could clear a lot of fault codes stored inside the ECU.
    "HIGH-PERFORMANCE ENTERTAINMENT ACCESSORIES FOR CAR TRUCK 4WD BOAT
    HID-LED-HEADLIGHT-FOGLIGHT-WIRELESS APPLE CARPLAY AUTO ANDROID DVD GPS CAMERA - 12V 24V CUSTOM FRIDGE"
    https://www.maxperformance.com.au

    2004 TD5 HSE
    2003 TD5 Manual: BUILD THREAD

  6. #6
    Join Date
    Dec 2016
    Location
    New Lambton, NSW
    Posts
    690
    I'd suggest getting another ECU, maybe a NNN and get a remap

  7. #7
    Join Date
    Feb 2007
    Location
    Bentleigh 3204
    Posts
    244

    Td5 issue

    I have a1999 defender Td5 Ecu And a nanocom
    if you want to try another ecu to confirm your diagnosis

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!