Dealer muppets

richard> It would be a hell of a lot simpler just to plug into the richard> J1830 diagnostics connector! If you *really* wanted to Yeah, if all you want is to get at the diagnostic info.

richard> tap into the CAN bus, as long as the device has an richard> impedence (not resistance) of 37 ohms then CAN will cope richard> with any number of devices. CAN is only a packet stream, richard> interperting the packet headers to see who they are richard> adressed to is up to the devices attached.

But you could program up a really neat "black box recorder" if you could tap all the buses with the right interface!

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+-------------------------------------------------------------------------+ |Andy Cunningham aka AndyC the WB | andy -at- cunningham.me.uk | +-------------------------------------------------------------------------+ |
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- Everything you wanted to know || about the P38A Range Rover but were afraid to ask. |+-------------------------------------------------------------------------+"And everything we want to get/We download from the InternetAll we hear is/Internet Ga-Ga/Cyberspace Goo-goo" -- from "Radio Ga Ga"/"We will rock you"
Reply to
AndyC the WB
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Its got two flavours, slow and fast basically, which support different size packets. It can (ho ho) operate between 10kb/s and 1Mb/s - the minimum that a device *must* support is 20Kkb/s. Max line length is 1Km (yep, that is 1 kilometer), but only 40m at 1Mb/s.

The differential between the two lines must be between 1.5V and 3V, (1.5 being optimal), this is the clever bit, as any inducted voltages will still leave the differential at 1.5 (or so) volts giving an amazingly robust link, ideal in automotive applications (CAN was origonaly intended as a controller bus for industial controllers, but proved rather useful in automotive apps where voltages are often, shall we say, variable!). Impedence is 124 ohms (not 37 as I'd said earlier, that 37 ohms was for a dodgy unit that would not work! - well it was a couple of years ago!) . Richard

Reply to
richard.watson

Exactly - thats how I looked for spurious packets when ensuring that all required messages were present, and that no "extra" messages were being set. At another company we had a 100% bus system on a Jag, and it had a "black box". The limitation was how much data to store, obviously with an eye to cost. We could, for instance, record everything relevant for say, 10 secs, which would give an exact record of what the vehicle was doing just before a crash - speed, gear, steering wheel angle, brake state etc etc - even outside temperature and whether it was dry or not. It had quite major implications for accident investigation!

Richard

Reply to
richard.watson

Arghh... probably the same chap who rang me as I was heading home, after a warranty repair, to tell me that my car was ready for collection - about an hour after I'd collected it. The chap from whom I'd collected it also told me that my Dinitrol treated vehicle was a bit "mingy" underneath and they needed it another 30 mins to give it a good clean before they could let me have it back. Clearly, most Discos in Doncaster are school / Tesco run machines.

Ian

Reply to
Ian

Pulled up outside H*rtwell. Service guy walks out, spots me getting out of Piglet, rushes over and exclaims "Wow! Neatly kitted out Defender...!!"

I got back in.....

Neil

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Reply to
Neil Brownlee

In article , richard. watson writes

This is remarkably similar to SCSI (HVD).

I can't remember the termination resistor values used in diff, but the cable impedance is the same as single-ended SCSI-2 at 90-110 Ohms. It allows official cable lengths to be increased from 6m (SE) to 25m (HV diff) - essential in larger data centres, and is robust for the same reasons as above.

Shows there's not much new under the sun :)

Regards,

Simonm.

Reply to
SpamTrapSeeSig

Uh-oh

David....be careful. Just heard something about my "stance" with dealers. Not good. Not good at all :(

Neil

Reply to
Neil Brownlee

David,

It's Northampton....not Nottingham!!!!

Neil

Reply to
Neil Brownlee

Sorry for missing the reference here, but Piglet is....?

101? S1?

P.

Reply to
Paul S. Brown

Disco !!

Andy

Reply to
Andy.Smalley

Could you email me & fill me in?

Reply to
David French

Paul,

Piglet is a kinda modified (read heavily) Discovery....you can see him at ..

Neil Founder

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1997 Land Rover Discovery V8i 4.6 ES Special - 'Piglet' - RPI 4.6 Litre V8, RPI Tornado Chip, XD9000i, BRB Winch Bumper,Terrain Master Hi-Lift carrier, Bearmach steering/sump guard, Mantec Side Protection Sills, Scorpion Racing +2" 25% uprated front and 50% uprated rear springs,+2" De-Carbon Shocks, Southdown Fuel Tank Guard, 235/85/16 Goodyear Wrangler MT/R's,WH Wheelcarriers Diff Guards, JE Engineering 4 Tailpipe SS Exhaust, Safari Snorkel,R J Harvey External Roll Cage,Front and Rear Tru-Trac LSD's. 2001 Land Rover Freelander V6 GS Station Wagon- 'Kanga'

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Sorry for missing the reference here, but Piglet is....?

101? S1?

P.

Reply to
Neil Brownlee

OK, had a look.

What's the problem with figuring out that that's a Disco then? Other than the fact that the specsheet reads like the Starship Enterprise with 4wd.

P.

Reply to
Paul S. Brown

The problem was, the dealer thought it was a Defender.

Still, at least he didn't say it was a Jeep.

D
Reply to
David French

In article , David French writes

Oh...

Regards,

Simonm. ("I'll get me coat...")

Reply to
SpamTrapSeeSig

Land Rover's own insurance department/dealer/broker/whatever on being asked for quote for a 2.25 petrol 90. "You mean 2.5 litres, sir, we don't have a 2.25 litre 90 on our system".

Having got to supervisor level and a grudging acceptance of the existence of 2.25 90s, the quote was to put it mildly, ridiculous.

Gordon

Reply to
Gordon

They're definitely more suited to the more recent examples of the Marque! They're ideal if you've bought a brand new example! Bear in mind the standard off road cover, glass cover including headlamps etc........

Reply to
Llandrovers

Nah...it's just Royal and Sun Alliance ISTR, and they know NOTHING about Land Rovers.

Neil

Reply to
Neil Brownlee

Neil, could you quote a bit from the previous post, when you reply, for the benefit of those of us who "Hide Read Messages"? I keep having to dredge my memory to remember what comment you've replied to!

Rather like when Abby makes some random comment about a conversation we had several hours ago, and I sit there like a deer in the headlights.

Thanks! David.

Reply to
David French

Llandrovers> They're definitely more suited to the more recent Llandrovers> examples of the Marque! They're ideal if you've Llandrovers> bought a brand new example! Bear in mind the standard Llandrovers> off road cover, glass cover including headlamps Llandrovers> etc........

I had the good fortune to be up at the LR Training Academy in Gaydon on Monday. It was interesting to hear them speak of struggling to hold on to their last P38A (2000MY) as it was considered an "old model" and they weren't providing training on it any more.

AndyC

--

+-------------------------------------------------------------------------+ |Andy Cunningham aka AndyC the WB | andy -at- cunningham.me.uk | +-------------------------------------------------------------------------+ |
formatting link
- Everything you wanted to know || about the P38A Range Rover but were afraid to ask. |+-------------------------------------------------------------------------+"And everything we want to get/We download from the InternetAll we hear is/Internet Ga-Ga/Cyberspace Goo-goo" -- from "Radio Ga Ga"/"We will rock you"
Reply to
AndyC the WB

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