Xantia Activa Ph2 - Firm State help please

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white exec
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Posts: 7445
Joined: 21 Dec 2015, 12:46
Location: Sayalonga, Malaga, Spain
My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S
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Re: Xantia Activa Ph2 - Firm State help please

Post by white exec »

Additional diodes, properly (reverse) connected will not cause any misbehaviour on the system, but just provide belt+belt+braces protection, and also ensure proper EV operation, in the event that that encapsulated diodes in the EV solenoids fail.

Could be that the ECU modification was not done well, or there was another fault.
Suggest removing the added diodes from the first ECU, and then popping that one in, just to see what it will do.
Chris
Renanek9
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Joined: 20 Apr 2021, 18:29
Location: Brazil
My Cars: Xantia Ph 2 Activa V6
x 4

Re: Xantia Activa Ph2 - Firm State help please

Post by Renanek9 »

white exec wrote: 28 Jul 2021, 21:25 Additional diodes, properly (reverse) connected will not cause any misbehaviour on the system, but just provide belt+belt+braces protection, and also ensure proper EV operation, in the event that that encapsulated diodes in the EV solenoids fail.

Could be that the ECU modification was not done well, or there was another fault.
Suggest removing the added diodes from the first ECU, and then popping that one in, just to see what it will do.
My OEM 97 ECU didn´t worked. I removed the DIODES and it shows 1.5 v + firm state. I Will try to change the drivers one more time do see if it come back to live, but i think it might have been died

My actual ECU with the removed diodes keep working great. I will check if any DIODE was in bad shape or anything

I will keep posting for you. Want to solve this mistery
Xantia Ph 2 Activa V6 - 7681CJ / VH000121
Renanek9
Posts: 50
Joined: 20 Apr 2021, 18:29
Location: Brazil
My Cars: Xantia Ph 2 Activa V6
x 4

Re: Xantia Activa Ph2 - Firm State help please

Post by Renanek9 »

Updates

I´m still working on my other ECU and the diodes. Meanwhile, my ACTIVA continues to run perfectly and comfortably with the new ECU WITHOUT the diodes.

I was watching this video when I came across a very relevant information about Suspension ECU Reprogramming. Check with me.
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Could someone send me the Worshop Manual pages that refer to this "Suspension ECU Reprogramming" in the "Replacement Parts" section of the menu?

I believe that with this I can program my Brand New ECU with my vehicle model. I would like to do this with some instruction, in the correct way, as it is only possible to do this once!
Xantia Ph 2 Activa V6 - 7681CJ / VH000121
User avatar
white exec
Moderating Team
Posts: 7445
Joined: 21 Dec 2015, 12:46
Location: Sayalonga, Malaga, Spain
My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S
x 1752

Re: Xantia Activa Ph2 - Firm State help please

Post by white exec »

That is my understanding, too. Late-type (H5 iirc) ECUs need to be initialised with the vehicle type: XM, Xantia, or Activa. This operation can only be done once, and is not reversible. I think I read that the units were standard (non-Activa) XANTIA by default. I don't have the procedure pages, I'm afraid.
Chris
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