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[Entwood]

hold up, how do you know the specific error if they all tick?

Kevin gave me the pointer ... Looked it up on TIS  ..

Basically .. if you remove the 430 Ohm resistor .. the one that looks like a fuse but isn't.. BEFORE switching the ignition on and selecting reverse, the system enters a sort of self diagnostic mode ..

all listed under : Service information 00029326

Don't know if this will work .. trying a screen grab from the VM ... never done this before ..

can only get a small portion of the article in the grab ..

[Kevin Wood]

Good find. Could do with being in a HOWTO, methinks.

Kevin

[Entwood]

Good find. Could do with being in a HOWTO, methinks.

Kevin

If you think it would be usefull as a "howto" I'll do my best ....

If we are allowed to lift from TIS I'll do the whole article as a series of screengrabs, otherwise I'll have to re-write it if copyright is an issue

[feeutfo]

Ooh well done Nigel, dead handy that......but two different boxes giving different error codes you say?....and regardless of which box they all tick.......is the loom made in ireland Italy? :-/

[Entwood]

Ooh well done Nigel, dead handy that......but two different boxes giving different error codes you say?....and regardless of which box they all tick.......is the loom made in ireland Italy? :-/

I'm guessing, and hoping, that my original box, that gives 2 & 3 as faulty regardless of whatever I do with the sensors .. gives the same "fault" with no sensors in at all !!! .. is FUBAR, and that the new box from AndyC is telling the truth.

The sensor it says is faulty is in fact the one that was hit by the prat that reversed into me, so could well be faulty. The reason I purchased the other two, and replaced them, was the "not ticking" thing. I now hoping that they are actually OK and at least one of them will work !!

Plan is to drop the bumper tomorrow if its A) dry .. and B) I get the time given the list of other things to do before we go to France on Tuesday !!  If not it will have to wait a couple of weeks ... unless I take the tools and do it in France ...

[Andy B]

.... unless I take the tools and do it in France ...

It'll be something to instead of being bored on the beach/lying in the sun.

I always take some tools with me ..... just in case!   

[Entwood]

I really have had enough of this now !!!!

As said last night, on fitting the new control box error on sensor 1 was given.

Dropped the bumper this morning to check it out.. and with the new box... errors on sensors 1 & 2 !!! ...  with the old box 1 & 4, regardless of which sensors are in which plug.

As socket 3 never seems to give a problem I checked every sensor ... 4 old, 2 new in that socket .. results are consistent with the "non-ticking" test .. 2 old sensors fail, 2 old and both new "pass".. so I appear to have 4 good sensors.

So I think .. wiring loom. Check out every wire for continuity, all OK. check out every plug for cross feeding .. all OK. Unwrap as much of the loom as I can .. no signs of damage..... results are always consistent .. 1 & 4 with old box, 1 & 2 with new box ..

Having spent 3 hours faffing I give up and put it all back together with the new box installed. Don't know why I did a final check .. error is now just on #2 !!!

I'm guessing that the loom has damage I can't see and that as the loom "moves" when putting the bumper on/off it is changing the internal resistances of the wires in some subtle manner ... just enough to upset the control box...

It's all back together with the speaker unplugged.. and will stay that way until I decide what to do next .. and that won't be until after our french holiday !!

      

[feeutfo]

Ffs, thought mine was a pita. Does your rear irmscher have the polystyrene insert, of any form, as the standard one does? Asking because it helps locate the wires and stop them flapping. Wondering if they where flapping in the breaze all the time since the bumper was fitted.

I could not get the polystyrene insert in on mine as there is no room for it, but the front needed it to hold the bumper at the correct hight so had to cut the front edge of the polystyrene off and fit the top edge only. So now wonder if the rear bumper needs a partial fitment of polystyrene as well?

Basicly I'm asking if the wires where secured properly after the irmscher bumper was fitted? Would think so if factory fit.

Also wondering if the plug to box is clean and dry or giving good contact....? :-/

[Entwood]

Lump of polystyrene present and fits correctly.

As the troubles all started about two months after I had the back bumper removed and repaired due to a prat reversing into me (end of last september) ... he paid so no insurance claim .. I'm guessing that the bodyshop may have pulled/damaged the loom somehow ??  Its easy to get the loom caught on the towbar as you lift the bumper off if you are not careful.

The initial problems were that the error only occured after the car had been standing overnight in rain. Once driven for 15 minutes, or left dry .. the system worked fine. Over a period of 6 months it got steadily worse, to the point that in May I unplugged the speaker and lived without the noise .. !!

Given the oddities its showing, with different faults everytime the bumper is put on/taken off/put back on it can only be the loom I reckon .. possibly streched/internal breakage or even some internal corrosion ?? I've examined it as much as I can .. and "wiggled" every accessible inch, but it seems to make no difference .. until you out the bumper on or take it off again ...

My sentiments at the moment would test the profanity filter to the extreme.... darned thing can stay as it is until after the holiday.

My thoughts are to later try bypassing the existing  loom wires directly back to the box and see what occurs .. if I just do the "return" wires it's only 4 to do ...

[VXL V6]

Well the DTi Elite i've just picked up today has a parkpilot fault as well so i'll be swapping bits off the 3.2 Elite in an attempt to work out what's wrong.

If you want to sell one of the control boxes when you fix the problem I would be interested! 

[Entwood]

Well the DTi Elite i've just picked up today has a parkpilot fault as well so i'll be swapping bits off the 3.2 Elite in an attempt to work out what's wrong.

If you want to sell one of the control boxes when you fix the problem I would be interested! 

Did you read the bit above about self-diagnosis system ??  might help ??

[VXL V6]

Yes thanks, i'd read it on TIS beforehand so will have to do some diagnosis at some point. Got some other catch up jobs to do on it first though!

[Entwood]

Have fun ... if it ends up that both these control boxes are actually OK ... don't see it myself as they give different faults all the time ... then one will be for sale .. but not for a month I expect .. far too much "enjoying myself" to take place before I tackle this job again !!!

[VXL V6]

Yes, don't worry for the moment, just going to do an oil change tomorrow and have a good look round my new purchase and see whats what for the next couple of weeks.

[pscocoa]

Any progress on this? - on diagnostic test with 430 ohm resistor removed I get a 3 sec signal followed by pause then 3 one sec beeps each followed by short pause.
Suggests sensor 3 but was tested a while ago with 4 new sensors and still gave fault.
Just to be clear - with 430 ohm resistor back in place I just get continuous tone when in reverse.
Interestingly my headlight range warning light came on when resistor removed (this has been another unexplained electrical fault over last 4 years or more) and appears only now and then - headlight motors working fine - tested by KW a while ago.

As Entwood said previously loom is suspected but nothing obvious. Near to 430 ohm resistor there is a contact spade - what is that please?