Bosch ECU Schematics

[John Dammeyer]

At 06:09 PM 10/07/1996 -0400, you wrote:
>At 02:31 PM 6/11/96 +0000, you wrote:
>>I am looking for Bosch ECU Schematics for the following cars:
>>
>>BMW 530i, 1978
>>Datsun 280Z, 1975-1978
>>Datsun/Nissan 280ZX, 1979-1983 (incl. turbo).
>>
>>If anyone has any schematics for the ECUs for these cars, any or all 
>>of them, in any format, please let me know.  Also, if anyone knows of 
>>any good source of information on these systems, I'd love to see it.
>>

As I understand it the Bosch uses the CAN bus for communications.  Your
first step in reverse engineering or even monitoring the system would be to
determine which two wires make up RT+ and RT-.  Then attach a suitable CAN
card monitor and eavesdrop.  Coupled with logging other real time info such
as engine RPM there is a likelyhood that you would be able to determine
which messages say what.  But.... other than reporting some sort of status
or replacing completely a particular module I'm not sure what you'd do with it.

John.

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with arrows in their backs.
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