Have I got the wrong PCM calibration?

[slugmeister]

Gday all I need some help.

I have what I believe is a Mk6 2.4TDDI 90ps minibus

Im having some problems with performance especially at low speed, ABS and a speedo fault (probably wrong diff ratio) as per previous post.

So I bought a VXDIAG VCX NANO with IDS 101
Got that setup and plugged it in.

IDS reported the basics of the car but with 120PS engine and asked if that's right and I said no.
It then said wrong PCM calibration or similar.
So I looked at the log viewer and found this

OXAB01
Module Part Number : 1C1AND

Module Part Number : 1C1AND
WF0AXXGBFAYL33485
Vehicle, engine, capacity, Pats, transmission, fuel, etc all correct (I think)
Power : 120PS

Now that's not my VIN its WF0EXXGBFE1A60721 and ETIS lookup data seems to match my vehicle and says I have a 90ps engine which given the fuel pump and turbo size Id say is correct.

I think the tear tag number on the van is YC1A. (label inside passenger door, first 4 digits)

So whats up? has the PO changed the PCM at some point and it has the wrong calibration or in fact wrong PCM?
Is this fixable?
Any assistance appreciated

Thanks in advance

[paul2012]

WF0AXXGBFAYL33485

Is a 2000 Transit mk6 T350 chassis cab, 2.4 TDDI 120ps, axle ratio 4.63

WF0EXXGBFE1A60721

Is a 200i Transit mk6 T350 Bus, 2.4 TDDI 90ps, axle ratio 4.63

Possibly either....

Second hand engine complete with fuel pump, PCM, Ign key/transponder chip fitted.

Or

Second hand fuel pump with PCM + ign key/transponder chip has been fitted.

[slugmeister]

Thanks for your reply Paul.
I suspect that you are correct if not wholly then partially, given the key and ecu issues.
However, the van came to me with what seemed like an original Bosch Vp30.
Ive since had to replace it twice (with reco's), the latest change I have been searching for reasons as to why the last died.
I suspected fuel supply issues and have replaced the filter housing, and Im still suspicious of the fuel line from the tank.
Its definitely a D2FA motor and has the tiny 90ps turbo (compared to my fathers fleet of transits)

I also have a low speedo reading error and something is up with the ABS / traction control at low speed.

The van runs, and CAN run well, but low speed its very difficult to control the throttle, and when cold there the ABS and traction control issue where the rears lock up.
The PO had cut the wire from brake switch to PCM/ABS and by the look of it had a switch in there which wasn't there when I got it, so I suspect they were aware of these faults.
I have since linked that cut.
I am trying to check the diff ratio as I believe its set wrong, given the speedo, and I think possibly in addition the right rear ABS sensor may be intermittently faulty, probably wiring or loom.

So I got this IDS solution up and hit a brick wall when the PCM didn't match and the calibration is for the wrong spec

I guess what I would like to know from an IDS guru, is can I apply a 90ps PCM calibration to the PCM I have in there which I don't know the part number of but it seemed from IDS it was a IC1A series?
If so what calibration and how do I do it? Ive followed some threads and probably have enough info to stuff it up

Cheers

[martynx]

An easy way would be to buy an early ( non didi dash ) 90 ECU from ebay & clear keys then module initialisation. Then put in correct tyre size & axle ratio. You can of course prog a 90 calibration in but IDS is fussy about doing that these days. ( It often refuses to accept known good calibration numbers / tear tag ID's & the DPC*** number should be a match for the whatever cal you choose. It didn't care years back , accepting pretty much what you offered it.

[slugmeister]

Interesting info regarding calibration, thanks.
The DPC number is on the PCM isn't it? How do you get to that, looks like a pain of a job...

I have since discovered the following calibration info from IDS and Forscan
Strategy : PUPIA
Filename : PUPIAJ2
Module ID Number: 0XAB01
Calibration Number: YC1A-12K532-AG
Module Part Number : 1C1AND

I have also found evidence from other forums that other D2FA 90PS engines do have the same strategy and filename, but couldn't find evidence of the use of that calibration number.
Given that, Im reasonably confident the PCM is a suitable one for the engine, but I couldn't find that filename PUPIAJ2 or calibration file named YC1A-12K532-AG in my V81 calibrations or any reference to that calibration number on the net for that matter. My IDS tinkering hasn't gone exactly to plan, it seemed a little flakey in use, and as yet Im not 100% confident in the VXDIAG VCX NANO with IDS V101 chinese virtual machine as supplied. Im going to try a VM running x86 Windows and try IDS V86 as per loots downloads.
I tried out the latest Forscan and it was fast, stable, easy to use, great for monitoring and worked on Windows 8.1 x64 that my laptop has, but I couldn't access the ABS module with that but that's another matter. I have the As Built file for my van and I think Forscan can apply that but Im still investigating. If it can, that may fix my axle ratio issue. Apparently Forscan can do key programming, so my spare might become usable if I figure that out.

Cheers
Simon

[paul2012]

Firstly.- ABS fault on a mk6 will not effect speedo
For vehicle speed check VSS (Vehicle speed sensor) on gearbox.

Secondly. - Calibration currently installed on PCM may NOT match data on label attached to PCM.
Partly due to previous calibration updates performed in the past & relevant label to reflect updates was never attached to PCM.

Thirdly. - 90ps & 120ps TDDI engines have different fuel pumps.

2.4 90ps TDDI engine use a Bosch VP30 fuel pump
2.4 120ps TDDI engines use a Bosch VP44 fuel pump.

Check which fuel pump is fitted to engine. Also check engine code. (Located near fuel pump).

You need to confirm what engine you have fitted. Before attempting any form of PCM programming

[davyjcb]

Have you got the stable elm with the hs/ ms can switch for the forscan it should see your abs it will indeed do keys ive found it better for keys than ids it takes the incodes better , I have had the same out code on a mk6 on ids and it said it was incorrect plugged in forscan same out code generated code and no probs

[slugmeister]

Thanks for that info. I feel the same, the way Forscan is going it looks really good and I reckon it will replace my need for IDS. I have a J2534 passthrough, but I ordered another cheapo ELM adapter that the vendor swears will do SAE J1850 PWM. My other ELM adapter doesn't have the J1850 connections or circuit at all and will only do CAN. With regard to MS/ HS CAN and the switch I know what you mean but I think early MK6 that doesn't apply but am willing to be educated. F-Super can see the ABS no drama. I have written my own scripts for F-super, but without PID list and module addresses (I have the PCM) I cant do much more with that.

With regard to speedo, yes the VSS is on the gearbox and via the PCM etc runs the speedo. However, I beleive my PCM map has the wrong diff ratio (by way of maths/GPS), so the speedo is out (under). When coupled with the ABS wheel sensors, theres a speed mismatch and the ABS and traction control run havoc at slow speed. Hope that makes sense. Someone else on this forum had the same fault after changing diff ratio to a taller diff. I want to remap / whatever to fix that fault.

I understand the PCM may have a different map, Im not relying on the label. I have confirmed that there at least some other punters with this engine, PCM, strategy and filename. I cant find anyone else referring to that calibration number. I cant find ANY reference to that number, but it is very similar to some 120PS calibration numbers (AG compared to AE)

IDS and Forscan both report the VIN is wrong, and that the power output is 120PS. I think I have a D2FA 90PS, the turbo is from a 90PS (its tiny compared to all of my fathers fleet of transits) and I definitely have a VP30 (the two previous pumps were also VP30), and I have a 1C1AND PCM (haven't confirmed the DPC number).
The van runs and though lacking torque at some parts of the rev range, runs well, but not at slow speed. It revs better than ever with new timing chain, pump and EGR etc cleaned and blanked.
It runs better than the two TDDI's my father has, but the 6 speeder TDCIs leave it for dead and have boatloads more torque.

As reported it looks like someone may have fitted this PCM as a replacement but the VIN specs match a 120PS van that has the same diff, so that doesn't make sense. Another possibility is that there was a owners manual with the van that was pretty trashed and missing more than half of the pages, but was the original with matching details and with first 7 years or so of service record. There was another manual that has gone missing but it had a different VIN I remember that. Perhaps someone used that to set the VIN and got the diff wrong. Don't know.

I understand the VP30 and VP44 are different pumps and they are used in different spec (90 and 120) engines. Hence my question, do I have the wrong calibration. The VP44 was available with a PSG5 as this VP30 has and has higher max pressure. Could a VP30 run with a VP44 map? That might seem impossible, but electrically I think it could, it wouldn't be optimal, but Im only guessing. It might not do a VP30 any favours though, and my last VP30 only lasted 50 000km. I was presuming it had fuel supply issues though and have replaced filter housing etc. The timing chain wasn't flash and the tensioner was pretty shot so I changed all that. But I was looking for answers because I was hoping for longer life than that.

There you go. Im no expert so any info is appreciated.

[slugmeister]

Definitely a D2FA engine. Its on the block under exhaust manifold.

My IDS v86 doesn't know anything about YC1A-12K532-AG.

[devoncarl]

I bought the vcm nano from ebay.

If you try to update the pcm with the file as you run through the procedure it will wipe your pcm and will not load the new file.

Be very careful as this caused major headaches.