PCMTec Development Blog

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Can you use the alpha PCMTEC software with a HPTuners MVPI interface?

No it is not a J2534 interface and is completely proprietary.

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Someone is kindly removing a ZF TCM and sending it to us. Decided getting ZF reflashing/editing done was a higher priority than scanner/datalogging so we will be getting this done first.

Including VIN changing?

Nothing stopping you from doing that now but it will cause lots of issues. To do a junkyard swap you need to relearn the pats system which is not trivial to implement. On the list of features I'd like to add though.

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After countless hours of researching how to tune and modify ab data I still hadn't found a software to suit my needs until now.

What specifically do you want to do that the current software doesn't allow you to do ? We are aiming to help fill niches so people don't have to use 6 different packages and can instead use one.

When you say you have Ford credentials what are these used for?

Cheers for the kind words!

[rmrmd1956]

This is what I believe is in the VID block:

The attachment vid.jpg is no longer available

Thanks for the reply.
How did you determine the octane adj?
My ecu bin has that set but every other bin file i've looked at doesn't?
Ive tried changing the bits you said for 0x000100DE ;100DF. Most I've looked at have FF 00 for that.
I tried FF 01 and FF FE like your example and neither enabled cruise.
I'm wondering what 0x000100D9 is for? I noticed it is different amongst bin files. I've seen 6F on BA's, C8 on my BF ecu?

I did notice the checksum error DTC after I was fiddling with the VID block with hex workshop.
Next I need to figure out how to manually calculate the new checksum.

Here is the code that activated cruise control in my car, it checks the ROM switch for cruise control then checks that VID block is not disabled(set by another ROM switch) then checks 0x100DF and then sets cruise control status in RAM. My car is Aston Martin with Ford MPC565 with some bespoke code but I'd have thought that the VID processing would be the same. Don't know for sure though.

[rmrmd1956]

Here is the VID cksum calc. It adds up all the halfwords from (0x10040 + 0x80) to (0x10040 + 0x100). It should be zero so if you change anything there you need an opposite change to prevent the cksum failing.

[rmrmd1956]

Here is the octane adj code and the expected octane for MBT table to calculate engine Tq. Since I don't have octane sensor, there may be more code in other cars looking for ROM switch.

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Great info Mark.

On another topic, does anyone have a pinout for the TCM plug on a ZF trans? its a circular plug with about 12 pins. Pretty keen not to blow it up via trial and error. Even a picture showing the wire colours and which pin they go to would be enough to get me started. I'm going to add ZF support soon.

[Tazzi]

Is it 16pins??

[Spook]

1 M Gate
2 CAN Low
3 Diagnostic K-line
4 TIP -
5 TIP +
6 CAN High
7 UDRMV
8 Not used
9 Ignition Supply
10 Park/Neutral Signal
11 Not used
12 Not used
13 Ground
14 Power supply +V
15 Reverse Light
16 Ground

zf_pinout.jpg (29.86 KiB) Viewed 7045 times

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