V6 Xantia......... the beginning of another adventure

[Trainman]

Will, if you can default it, that would be great, I'm working earliest this week, so can pick it up after work.... either from yours or work it doesn't matter.

Simon, can you send your lead with Will, then I can do a pin comparison on one of the leads I have and get it back to you within a couple of days if your sure you can manage without it, but please if not don't worry...... I know Paul has one and I can do the comparison in September at the XM meet...... if necessary

[KP]

Coolio I'll see what I can do fella

Worst case scenario is it will be taken out Wednesday night but if I can so it Tueaday night when I get home I will do.

I'll bring it to work as you near enough pass it on your way home anyway so easiest pickup location as well

[Mandrake]

Have you ever had yours out Simon? Just thinking if it's been out before it will mean all the above will be much easier to remove and not rusted in solid as some can be

Yes I've had the gearbox ECU out before.

Also, I just swapped the battery trays over between the two cars today because the new car was missing the battery mounting clamp - there is a rusted, snapped off bolt in the hole where the front clamp bolt is meant to go, and cable ties holding the battery in.

So unfortunately now the old one you're getting has that tray and cable ties holding the battery down... on the plus side as I've had it all out today it should come out easily for you.

[KP]

If you had said I would have brought a clamp up with me as I have two sat on my bench

[Mandrake]

Thanks, but the problem is the bolt hole needs drilling and tapping out as what is left of the original snapped off bolt is rusted solid in the hole....swapping the trays was easier for me. The battery is cable tied down securely so you won't have any problems on the way home...

[KP]

Ah it's ok, I've had some before with missing clamps and nothing to hold them in place!!! One would cut out at a certain corner above a certain speed as it had already strained the positive lead and would nearly pull it out on the corner!

I'll sort it out if the car is a seller as it will just need loads of penetrating fluid and a bolt held welding onto it or worst case I'm sure Paul has a spare decent one

[KP]

There will be at least one I reckon

[KP]

He's not been married long enough yet I reckon

[CitroJim]

Gentlemen, firstly, just in case it's not been said. S1 and S2 gearbox ECUs are not directly swappable. The essential difference is in how the diagnostic lines are used and without going into huge detail the S2 ECU will not speak to the 30 pin socket on an S1 and therefore you cannot re-initialise the auto-adaptives.

Secondly, no way will I be offering any sort of exchange job for HP20s. I just do not have the time.

Steve, I have an S1 ECU here (I think) and you're welcome to it but you must have a fully functional Lexia availabe to make it work. Without resetting the auto-adaptives on an ECU change the gearbox just will not work.

[KP]

If I reset the ecu before giving it to Steve would that not work Jim?

I wouldn't be putting his S1 ecu into my s2

[CitroJim]

If I reset the ecu before giving it to Steve would that not work Jim?

No, it's got to be when connected to the target gearbox Will.

There is a way of making an S2 ECU work and I did it on my old XM but it means adding a pin and wire to the ECU connector and making up a non-standard Lexia lead...

[KP]

I thought if I reset it and powered it off straight away it would stay reset until connected to Steves car?

[Mandrake]

I thought if I reset it and powered it off straight away it would stay reset until connected to Steves car?

That's my understanding Will, but I could be wrong.

The auto adaptive reset resets all the learned parameters for the clutches etc to factory default settings and also initiates an accelerated learning process. (Normally it only adapts very slowly to changes in the gearbox as it ages and wears) That learning process can only take place when the car is driven.

However if its impossible to connect to the S2 ECU in a S1 car with a Lexia then if something went wrong it would be impossible to read the fault codes even with a good 30 pin adaptor, which doesn't really help diagnose Steve's problem...

So maybe holding on to see if Jim has a S1 ECU Steve can borrow would be more sensible.

[KP]

I was thinking more that it would be testing the ecu as a physical entity for failure really incase something inside has blown ala hydractive ecu stylee

[Trainman]

I think the best option for me at present, is to hold off on doing anything.... I want to see if it does it again, and if so, when? I'm wondering if there is a pattern to it, say once a week or month.

Jim says he has a replacement, plus no doubt Paul will probably have at least one floating about.... Having said that...is this ECU specific to the V6 as it is to the S1?

If Jim is attending the XM meeting in September then we can change it there, if not I will run down to Jim's and we can have a look at it there...

Therefore, at this moment in time, she stays, I will put her through the MOT and then worry about it after we comeback from holiday in September.

IF in the meantime she plays up again, then a trip to Jim's will need to be scheduled in somewhere.

I believe at the moment it's the best I can hope for, unless anybody is breaking an S1 somewhere we don't know about......