964 DME Diagnostic
RL Community Team
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Originally posted by pncarrerars
...... and it works great.....
...... and it works great.....
Very interesting, fill us in!!
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Dear Doug,
It is nice to see you again. Thanks for your help in examining the montronic
codes quite a while ago. I did not succeed then but will try again. I have lost
you email since I moved to a new flat.
Can I have a copy of your program and schematics too ?
BR,
Felix Leung.
It is nice to see you again. Thanks for your help in examining the montronic
codes quite a while ago. I did not succeed then but will try again. I have lost
you email since I moved to a new flat.
Can I have a copy of your program and schematics too ?
BR,
Felix Leung.
Instructor
Joined: May 2002
Posts: 138
Likes: 0
From: Leicestershire, England
In reply to garrett376
Motronic: Read/clear fault codes, read inputs, read actual values, work outputs (drive links), reset system & idle adaption.
Climate control: Read/clear fault codes.
ABS & Air Bags are also listed but I have not tried them as not fitted to my car.
As I said, it works great. For most people just reading/clearing fault codes would be enough but there is much more.
Pete '92 RS
Motronic: Read/clear fault codes, read inputs, read actual values, work outputs (drive links), reset system & idle adaption.
Climate control: Read/clear fault codes.
ABS & Air Bags are also listed but I have not tried them as not fitted to my car.
As I said, it works great. For most people just reading/clearing fault codes would be enough but there is much more.
Pete '92 RS
Race Car
Joined: May 2003
Posts: 4,262
Likes: 105
From: SoCal
DougB states:
The 964's "command codes" were discovered by reverse engineering the Motronic ECU software.
pncarrerrars states:
Climate control: Read/clear fault codes.
If the just the DME EPROM code was disassembled, how were the other ECUs' command
codes obtained, e.g. for the CCU, Airbag, & Tiptronic, or was the Hammer "reversed"?
The 964's "command codes" were discovered by reverse engineering the Motronic ECU software.
pncarrerrars states:
Climate control: Read/clear fault codes.
If the just the DME EPROM code was disassembled, how were the other ECUs' command
codes obtained, e.g. for the CCU, Airbag, & Tiptronic, or was the Hammer "reversed"?
Advanced
Joined: Jun 2001
Posts: 99
Likes: 0
From: Florida
The procedure for reading and clearing fault codes is exactly the same for all the ECUs in the 964. So once you figure out Motronic, you can do them all.
-doug
-doug
Originally posted by Lorenfb
DougB states:
The 964's "command codes" were discovered by reverse engineering the Motronic ECU software.
pncarrerrars states:
Climate control: Read/clear fault codes.
If the just the DME EPROM code was disassembled, how were the other ECUs' command
codes obtained, e.g. for the CCU, Airbag, & Tiptronic, or was the Hammer "reversed"?
DougB states:
The 964's "command codes" were discovered by reverse engineering the Motronic ECU software.
pncarrerrars states:
Climate control: Read/clear fault codes.
If the just the DME EPROM code was disassembled, how were the other ECUs' command
codes obtained, e.g. for the CCU, Airbag, & Tiptronic, or was the Hammer "reversed"?
Race Car
Joined: May 2003
Posts: 4,262
Likes: 105
From: SoCal
"The procedure for reading and clearing fault codes is exactly the same for all the ECUs in the 964. So once you figure out Motronic, you can do them all."
But not for driving the various ECU outputs nor for readings the actual ECU's specific
input data.
But not for driving the various ECU outputs nor for readings the actual ECU's specific
input data.
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Advanced
Joined: Jun 2001
Posts: 99
Likes: 0
From: Florida
Originally posted by Lorenfb
But not for driving the various ECU outputs nor for readings the actual ECU's specific
input data. [/B]
But not for driving the various ECU outputs nor for readings the actual ECU's specific
input data. [/B]
-doug
Addict
Rennlist Member
Rennlist Member
Joined: Apr 2003
Posts: 30
Likes: 0
From: Ft. Collins Colorado
In M.H.O. (and probably many others') it is apparent Porsche just doesn't care. The Hammer was archaic when it came out, way slow, etc. and not worth the $5000 plus it took to buy it. All the Kraut car companies work the same way; keep any knowledge within the franchised sphere and destroy any "old" diagnostic stuff to prevent the people that really care about the cars from achieving an advantage. Over who??? The techs that were 12 years old when the cars were new?? How about the client?? Show me a dealer that will treat an owner of a 15 year old Porsche with the respect they give a gold-chain coke-head Boxster or Cayenne lessee and I'll show you an invisible persona. Let's have a poll and see how many 964 owners ( the most egregiously affected of all P-car owners) love their franchised dealers!!!
S.G.Schroeder
Poudre Sports Car Ent.
Fort Collins, Co.
S.G.Schroeder
Poudre Sports Car Ent.
Fort Collins, Co.
Racer
Joined: Feb 2009
Posts: 290
Likes: 18
From: CA Los Angeles & Central Coast
Do you know the exact procedure to put the car into self diag to be able to read the CEL codes?
I'm used to the GM's which you connect 2-pins and read the flashes...
Thanks,
Dave
Rennlist Member
Joined: Nov 2001
Posts: 525
Likes: 67
From: New Westminster, BC
You'll probably be shamed for resurrecting an 11 year old thread 
but the answer to your question is here:
http://members.rennlist.com/billwagner/checkengine.html
Cheers!
Jim G.
but the answer to your question is here:http://members.rennlist.com/billwagner/checkengine.html
Cheers!
Jim G.
Last edited by C24FUN; Mar 11, 2015 at 08:11 PM.