Volvo S80 diagnostics message format

[Sweede Speed]

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Hi all,

 

Does anyone have information on the diagnostics message format for Volvo S80? Simple example request/response might get me in the right direction. Please note that my volvo is 2001 and at that time OBDII communication was still done using ISO 9141 and I'm interested in the format that Volvo tools use to read Volvo specific information.

 

Thanks,

Sweede

 

[Allen Pothoof]

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Sweede,
 
I want to be clear on your question: do you want to know how to decode ISO 9141 or do you want to know how to decode information in Volvo format?
 
If you want the Volvo format, we can't help you: that information is proprietary and any of us that have had access to it have signed (or our company has signed) non-disclosure agreements.  Potentially big legal (and financial) problems if that information were passed on to you.
 
If you want ISO (or SAE), the documents are readily available, albeit expensive.  You might check with your local technical college (assuming they have an automotive curriculum); they may have the documentation and allow you access to it.
 
Regards,
Al Pothoof
 

---

Date: Tue, 18 Aug 2009 07:44:47 -0700
From: sweedespeed@...
Subject: [CANLIST] Volvo S80 diagnostics message format
To: canlist@...

Hi all,

 

Does anyone have information on the diagnostics message format for Volvo S80? Simple example request/response might get me in the right direction. Please note that my volvo is 2001 and at that time OBDII communication was still done using ISO 9141 and I'm interested in the format that Volvo tools use to read Volvo specific information.

 

Thanks,

Sweede

 

---

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[Funny N.]

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Actually, for SAE J1939, you won't be able to find it in those big books after 1996, you have to pay extra US$6xx for either paper copy or an 1 year web subscription on J1939 documents.

 

Funny N.
Au Group Electronics, http://www.AuElectronics.com
http://www.AuElectronics.com/products
http://augroups.blogspot.com/

---

From: Allen Pothoof <apothoof@...>
To: canlist@...
Sent: Tuesday, August 18, 2009 12:12:30 PM
Subject: RE: [CANLIST] Volvo S80 diagnostics message format

Sweede,
 
I want to be clear on your question: do you want to know how to decode ISO 9141 or do you want to know how to decode information in Volvo format?
 
If you want the Volvo format, we can't help you: that information is proprietary and any of us that have had access to it have signed (or our company has signed) non-disclosure agreements.  Potentially big legal (and financial) problems if that information were passed on to you.
 
If you want ISO (or SAE), the documents are readily available, albeit expensive.  You might check with your local technical college (assuming they have an automotive curriculum); they may have the documentation and allow you access to it.
 
Regards,
Al Pothoof
 

---

Date: Tue, 18 Aug 2009 07:44:47 -0700
From: sweedespeed@...
Subject: [CANLIST] Volvo S80 diagnostics message format
To: canlist@...

Hi all,

 

Does anyone have information on the diagnostics message format for Volvo S80? Simple example request/response might get me in the right direction. Please note that my volvo is 2001 and at that time OBDII communication was still done using ISO 9141 and I'm interested in the format that Volvo tools use to read Volvo specific information.

 

Thanks,

Sweede

 

---

With Windows Live, you can organize, edit, and share your photos. Click here.

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[Sweede Speed]

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Al,

 

I'm interested in Volvo format and I understand that pretty much anyone that has access to it cannot share it. That is way I also said that simple request/reponse example would help. Does not even have to be explained what it contains. Just like if anybody would have monitored CANBUS while communicating with their car. If I had any single message I could send to the car and it would respond back, currently I do not have even that. Then I can start experimenting and putting together all the other information I have gathered to try to understand/guess the format. 93 bits with any known value limits down considerably from 93 bits all unknown values.

 

Thanks,

Sweede

>Sweede,
>I want to be clear on your question: do you want to know how to decode ISO 9141 or do you want to know how to decode information in Volvo >format?
>If you want the Volvo format, we can't help you: that information is proprietary and any of us that have had access to it have signed (or our company >has signed) non-disclosure agreements.  Potentially big legal (and financial) problems if that information were passed on to you.
>If you want ISO (or SAE), the documents are readily available, albeit expensive.  You might check with your local technical college (assuming they >have an automotive curriculum); they may have the documentation and allow you access to it.
>Regards,
>Al Pothoof
 

[John Dammeyer]

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Hi,

 

There's a good reason the manufacturers keep this secret. 

 

Many years ago now I designed a fuel injection and CD ignition system that was used for Honda VTEC engines on aircraft and hovercraft.  I used CAN for reporting engine information and for setting fuel injection and ignition parameters.  When tuning the engine on the dyno we could modify the engine on the fly with a program running on the PC with messages out a PPCAN to the ECU.  I also built a small dashboard instrument that showed RPM and other engine parameters and it just listened in on the CAN messages.

 

Given the risk of someone modifying something critical while in flight or even before a flight and the potential of an accident I never released the structure of the messages or how to change parameters.  Although this may not be as critical in a car, the potential of the car being compromised is still there and I don't think I'd want the potential lawsuit or even want to deal with warranty issues after a user put the parameters back to stock.

 

So although I'd really like to snoop on the CAN buses in my wife's new AUDI A3 with the 6 speed dual clutch automatic transmission I can understand why Audi doesn't want me to know this.  Especially since the computer blips the drive by wire throttle on down shifts.  Just imagine a blip when the clutch is engaged at a cross walk with a mother and her baby carriage in front of the car.

 

I'd rather not know.

 

John

 

Automation Artisans Inc.
http://www.autoartisans.com/ELS/
Ph. 1 250 544 4950

-----Original Message-----
From: canlist-owner@... [mailto:canlist-owner@...] On Behalf Of Sweede Speed
Sent: Tuesday, August 18, 2009 12:37 PM
To: canlist@...
Subject: Re: [CANLIST] Volvo S80 diagnostics message format

Al,

 

I'm interested in Volvo format and I understand that pretty much anyone that has access to it cannot share it. That is way I also said that simple request/reponse example would help. Does not even have to be explained what it contains. Just like if anybody would have monitored CANBUS while communicating with their car. If I had any single message I could send to the car and it would respond back, currently I do not have even that. Then I can start experimenting and putting together all the other information I have gathered to try to understand/guess the format. 93 bits with any known value limits down considerably from 93 bits all unknown values.

 

Thanks,

Sweede

>Sweede,
>I want to be clear on your question: do you want to know how to decode ISO 9141 or do you want to know how to decode information in Volvo >format?
>If you want the Volvo format, we can't help you: that information is proprietary and any of us that have had access to it have signed (or our company >has signed) non-disclosure agreements.  Potentially big legal (and financial) problems if that information were passed on to you.
>If you want ISO (or SAE), the documents are readily available, albeit expensive.  You might check with your local technical college (assuming they >have an automotive curriculum); they may have the documentation and allow you access to it.
>Regards,
>Al Pothoof