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I've started to look closely at the Kelsey Hayes ABS units as along with the ECM they are another Esprit V8 (and GT3 in terms of braking) point of failure. As with all components on an aging vehicle s

I would expect the units to be mechanically the same but the calibration to differ so it will be interesting to find out if this is indeed the case. The ROM is probably programmed on board but it is p

On generic race abs systems there is indeed a wheel size (and weight and vehicle weight?) so I too think there is a different calibration on the Esprit, but my guess (random guess) is the pump is the

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@march Hello Marc, a Happy New Year to you. As above, I'm looking to put a KH415/KH430 diagnostics etc. app together. I can develop and test against the KH415 on my '96 V8 but I will need some help with the same against a KH430. I'm assuming that your post '98 has one? If so, have you got a DLC/ELM327/PC interface that you use for e.g. Peter English's V8 ECM diagnostics tool? We can take this offline to IM if you can assist. Thank you sir.

I tempted fate...now my Esprit V8 IS in bits...(sob)

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@march aha! That is EXACTLY what I need Marc! I am going to develop the software to talk to the ABS ECM. Are you up for helping me? It will only require you to download and run a simple comms utility program against the instructions that I will provide. Then once I have proven the interface I can write the application and of course you will get a copy! This is not mega urgent by the way, I need to do my KH415 first to prove that it is possible. So it is not imminent.

I tempted fate...now my Esprit V8 IS in bits...(sob)

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  • 1 year later...
On 07/01/2020 at 00:05, swindon_alan said:

My Haynes ABS Trade Techbook arrived this morning.

image.png.5d0afc39e57093e46fc9f4e78655049e.png

Now that was a good buy. A quick skim and we now have all of the pin outs, fault codes and diagnostics for both KH415 and KH430 (already had the KH415 ones from the Lotus Service Manual but nice confirmation). @sailorbob KH430 has fault codes for ECM memory: 8-bit RAM/ROM, 16-bit ROM and 16-bit RAM so you are spot on about that. Nothing similar for the KH415 so looks like I will have to persevere with the cold chisel...

In the meantime I've been investigating putting a Windows app together for the full TECH-1 functionality and I think it is do-able. I want to have options for both serial/USB and Bluetooth ELM327 interfaces and because the V8 ECM and ABS ECM share a common serial data port on the ALDL connector I believe I can target it if I can iteratively find the right protocol number.

Out of interest, this very comprehensive books lists all major European manufacturer KH usage 1982-2000 and it is not a lot!

KH415:
Vauxhall/Opel Frontera 1995-2000
Vauxhall/Opel Vectra B 1996-2000
(Plus Lotus V8/GT3 1996-1997ish)

KH430 aka Lucas EBC 430:
Fiat Marea/Weekend 1996-2000
Daewoo Matiz 1998-2000
(Plus Lotus V8/GT3 1998 on)

The majority of the rest of the cars listed use a variety of Bosch or Teves ABS with a smattering of Bendix and other Lucas products.

Hi , i have been looking at doing an arduino version of the Tech 1 ,  from what i understand there is a pin on the OBD port to talk to the ABS unit,  if i can support you or help in any way , please PM   me   

cheers

 

Mark

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