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Thread: Discovery 2 Crank no start, only 6c permanent voltage supply dtc

  1. #21
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    Quote Originally Posted by jassoyer View Post
    Problem is that it receives zero spark, have power going o the coils, but get zero rpm on the tacho. Which I believe is the cause of my issue.
    So no RPM reported on scan tool?

    So what things ARE reporting correctly? There should be lots of things.

  2. #22
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    Smarter folk than me are commenting here, but it seems to me that if the oily bits are going round and round like they should and you have power to the rest then you're left with the CPS. Sure, you've changed it but.... Just because it's new doesn't mean it's good. Also, there's the reluctor ring, but I dunno the failure rate of those.
    ​JayTee

    Nullus Anxietus

    Cancer is gender blind.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
    1980 SIII Petrol Tray: Doris
    OKApotamus #74
    Nanocom, D2 TD5 only.

  3. #23
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    Thank you for you reply, heaps of things... I am using an Autel Elite and Launch x-431 V+ even used a friends hawkeye,... Zero display on the Tacho or engine speed via Diagnostics. Not sure what to look at next.... about 600km from the nearest landie specializing workshop and not too inspired after chatting to some....
    Also it has a Unichip fitted, which I neglected to mention before.

  4. #24
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    Thank you for the assist Tins, I have bought a second new CPS and my issue remains, any way to simulate the reluctor ring?

  5. #25
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    I can think of 3 things so far not commented on that could be easy checkups for you.

    Weird that you get no spark, so (according to RAVE .. manual) there are spacers of the CKP(crank sensor), smaller for manual, larger for auto boxes. It also says there are two spacers, in the repairs section.
    I haven't pulled a V8 apart(much) and have zero experience back there, but if any part of these spacers are not fitted, just in case some other mechanic has tried to repair the vehicle before.

    So, important question is, what do you know of the history? have you just got it and want to get it going, have you had it all it's life and it suddenly died. Important info so that you know, someone else hasn't botched up a repair and used wrong parts .. or something. Seen this so many times, its the most frustrating part of getting an old landrover.

    Anyhow, second possibility, I didn't see any mention of immobilisation. Immobilised, no way you will start engine. red light on dash can be configured to not flash, so don't just rely on this telltale sign. Again, this comes back to knowing history of the vehicle. I haven't connected my Autel to the V8 to see how accurate it's OBD data is compared to the nanocom, but I did used to use an obd dongle and Torque app, and generic obd can give 'different' codes compared to nanocom in some situations.
    Autel could be better than a $10 generic dongle ... I don't know. But nanocom will tell you if vehicle is immobilised. If you're lucky enough to have the EKA code still with the vehicle, this could be an option to try just to be sure.

    Anyhow, #3 possible issue not commented on is the cam position sensor. the reason for this possibility would be that, it won't show any code if it's a problem, as it only shows code if engine revs above 500rpm .. so you won't know if it's short or open until engine starts.
    cam sensor less likely problem as if it's dead, the ECU just uses default values .. I guess maybe just rough running or something ... again, no experience just guess. But it can't hurt to check for voltage there too.

    SF has already mentioned fuse 14 in the passenger fuse box, we assume you checked and double checked so power to coils. but have you tested coils and or leads too? Can you access spares to try out?

    my feeling is most likely immobilised tho. if you can get friends Hawkeye again, and it can check this situation, would save you a lot of grief.
    Arthur.

    All these discos are giving me a heart attack!

    '99 D1 300Tdi Auto ( now sold :( )
    '03 D2 Td5 Auto
    '03 D2a Td5 Auto

  6. #26
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    Good Morning Arthur,

    Apologies for the very late reply, Big thank you for your insightful reply, there are no immo issues with the hawk eye tool either, or Autel/launch. All three units only detect missing rpm on cranking, going to check compression as I read it is maybe a timing chain issue as she swings very easily. I have zero fault codes, everything works, security light goes off, fob works, alarm works, can manual test inertia switch, though both back doors wont open- think a mechanical issue there.

    I received only two spacers with my crank sensors, a big one that takes almost the full front on the CPS with I understand is for the Auto's. The smaller spacers only covers half of the protruding part of the CPS sensor.

    I own a workshop in a small town about 450 km nearest a LR hopefully professional. And have worked on a couple landies, but more the diesels for small things and services etc. This vehicle was at 4 or 5 workshops before coming to me... Owner gave up on it and I assisted him with a mk3 Audi TT engine etc to assist him, as i truly felt sorry for the man... He replaced the complete lockset also(Ecu Bcm and key).

    I had always wanted a landie D2 to be precise, just love the look from when I was a young boy lol.... And the sound of that v8.... Music even though slow. So yes looking like a lemon... But it is in such good condition still, dont really want to give up on it, have gotten 2 new CPS and 2 internal fuseboxes. The original ecm has a unichip fittted, I sold the original lockset on the previous owners behalf has the Mechanics had raped him to the tune of 42k and his vehicle was still unable to start, did not see any fault with this side, suspected the IDM (interior fuse box). The crank sensor was missing when it came to me with no spacers to be found. Have seen there is a another spacer online which is basically half that of the half spacer. Do i need to try get that half spacer?

    Regards,
    Jasson

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