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Posted

Hello,

I come from Greece, I own C3/2003, 1.4 KFV engine, gasoline.

Im building up a self made interface for communicating to ECU through OBD and I come to the following problem :

The in car connector is pinned at 1, 5, 6,10,12, 13,15, 16. All other pins are not installed. Reading about the subject, it seems that no communication protocol is valid with only these pins OR my info about associated protocols are not correct.

 

Has anybody a correct  layout (pinout) of the OBD connector for specific model or can give an idea ?

thank you

Posted

The in car connector is pinned at 1, 5, 6,10,12, 13,15, 16. All other pins are not installed. 

Noop!! Actually if I had a look at connector orientation (its upside down) I would number the pins correctly.

Problem solved

Posted

At one time  each vehicle had its own method of connecting to the ecu. 2004 they were all told to be the same and they chose the 16pin  connector.  Thee reason behind this was that it gave a lot of spare pins on the connector so future cars can have more pins if needed and yet still allow older machines to connect still.  Nearly all still only use 4 or 4 pins for connection though

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