Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050
Very atmospheric. The Bearded Dragon
18th Jan 2009 5:09 am
aquasurfer
Member Since: 05 Jan 2009
Location: Drogheda
Posts: 155
excuse my ignorance what is a FBH ?
19th Jan 2009 9:06 pm
aquasurfer
Member Since: 05 Jan 2009
Location: Drogheda
Posts: 155
just read another thread which answered my question
19th Jan 2009 9:08 pm
phurley
Member Since: 19 Aug 2007
Location: So. NH
Posts: 175
Biz wrote:
But I still can't figure out why the engine cut-off and refused to re-start...
This is the main issue, IMO. The vehicle may have logged faults (certainly should have...) in the ECM or other modules. I would definitely take it to the dealer and see what it shows.
If there's no codes, it's probably a loose positive battery terminal. Sometimes happens in colder weather...
Last edited by phurley on 19th Jan 2009 9:27 pm. Edited 1 time in total
19th Jan 2009 9:16 pm
discoBizz
Member Since: 20 Sep 2008
Location: Manchester
Posts: 1416
I am of the same view phurley, will book it in asap as I have not found any answers yet on the net.
And I will definitely ask what the trigger is.... will revert when I've been, though not likely to be for another week.
Just wondering, would the faults show in any of the "hidden" diagnostic screens?
Thanks
19th Jan 2009 9:25 pm
phurley
Member Since: 19 Aug 2007
Location: So. NH
Posts: 175
No. The diagnostic screens have limited information - sometimes can be helpful - but doesn't show diag codes from the various ECUs. Shortcoming, that, IMHO.
[EDIT: Forgot about Self Test screen on HLDF. Can't remember if it displays codes from vehicle ECUs or just from Infotainment systems. Will look up when back at home tomorrow.]
Last edited by phurley on 19th Jan 2009 10:46 pm. Edited 1 time in total
19th Jan 2009 9:35 pm
dick dastardly
Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
Yup, tried every possible combination of terrain response, with/without DSC, with/without HDC, auto, auto sport, manual in 1st, 2nd and 3rd.. admittedly I didn't try the solution of flooring it 20m before the hill and hope for the best like the RR did (seeing it bounce on it's way up put me off!!!)
errm. hem hem... did you try low range, revs above 2000 rpm, DSC off ? I've been up very steep stuff in Langenaltheim easily, things that hummers (I mean the real H1 army one) have trouble with.There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
19th Jan 2009 10:14 pm
phurley
Member Since: 19 Aug 2007
Location: So. NH
Posts: 175
phurley wrote:
No. The diagnostic screens have limited information - sometimes can be helpful - but doesn't show diag codes from the various ECUs. Shortcoming, that, IMHO.
[EDIT: Forgot about Self Test screen on HLDF. Can't remember if it displays codes from vehicle ECUs or just from Infotainment systems. Will look up when back at home tomorrow.]
Follow-up: The "hidden" diagnostics - one for HLDF and one for MMM(Nav) - have self-tests that display only THEIR OWN DTCs. DTCs from vehicle ECUs are not displayed.
20th Jan 2009 3:09 am
discoBizz
Member Since: 20 Sep 2008
Location: Manchester
Posts: 1416
dick dastardly wrote:
errm. hem hem... did you try low range, revs above 2000 rpm, DSC off ? I've been up very steep stuff in Langenaltheim easily, things that hummers (I mean the real H1 army one) have trouble with.
Ahem... yes, in fact all combinations in both hi/low...
Plus I eliminated the obvious fault (being my off-road driving skills or actually lack of ) by asking others with considerably more experience to have a go...
Stubborn as I am, I will return with the same tyres once I've got some clarity on why it cut-off...
20th Jan 2009 11:39 am
discoBizz
Member Since: 20 Sep 2008
Location: Manchester
Posts: 1416
Thanks phurley, had a look myself last night... BTW, do you have any idea where the engine ECU diagnostic connector is? (not that I can do much about it at the mo, but who knows... )
20th Jan 2009 11:47 am
phurley
Member Since: 19 Aug 2007
Location: So. NH
Posts: 175
The diagnostic socket is located below the steering column
BUT, that's not going to be much help, I'm afraid, as generic OBDII scanners are hit & miss. The primary diagnostic systems, IDS & Autologic, plus a only couple of other readers is all that I've heard that work. See this thread http://www.disco3.co.uk/forum/topic28733.html
Did you check the security and condition of the battery terminals and clamps? Several similar incidents have occurred because of a loose ve+ clamp.
Also, although I have yet to witness this I did run across this blurb in some technical documentation
Quote:
Electronic Traction Control (ETC)
ETC attempts to optimize forward traction by reducing
engine torque or braking a spinning wheel until it regains
grip.
ETC is activated if an individual wheel speed is above
that of the vehicle reference speed (positive slip) and the
brake pedal is not pressed. The spinning wheel is braked,
allowing the excess torque to be transmitted to the
non-spinning wheels through the drive line. If necessary,
the ABS module also sends a high speed CAN bus
message to the ECM to request a reduction in engine
torque. Torque reduction requests are for either a slow or
fast response: a slow response requests a reduction of
throttle angle; a fast response requests an ignition cut-off [emphasis added].
When DSC function is manually disabled, the engine
torque reduction feature is disabled. When the ETC
function is active the ABS module also signals the TCM
to prevent gear shifts.
I think I remember reading somewhere that the diesels are supposed to fuel cut-off in the same situation.
20th Jan 2009 6:15 pm
discoBizz
Member Since: 20 Sep 2008
Location: Manchester
Posts: 1416
Hmmm... firstly thanks for this phurley
Just thinking here, an ignition cut-off is one thing, presumably relating to the spark plug current being cut-off (isn't that what the rev limiter does as well on petrol cars?) but diesels don't have spark plugs... Unless it's done otherwise???
And alternating between cutting-off and then back on is I guess expected when the DSC is active, but in my experience the engine completely shut down (I did check the battery BTW, all ok, even on the day all electrics where working fine) which arguably is not a good safety response...
21st Jan 2009 7:24 am
Bodsy Site Sponsor
Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
AndrewS has been having this problem on quite a few occassions....Bodsys Brake Bible
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
) by asking others with considerably more experience to have a go...
