Thanks for you comment. But I have abother question. Looking at the diagram of the voyager 1998 the CCD bus is on OBD2 connector Pins 3 and 11. And as of today I haven't found any tester that have those pin. So my question : What is the protocol used for this car. Even my OTC 3498 and my OBD-2 scanner in my laptop don't have those pins . Do you have a name for " any little scanner " that could read the DTC then.

Thanks again for you r help
Daniel





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My post :

I have a OTC 3498 but cannot connect to this mcu. I thing I need a sci bus scanner. But which one is low cost, but still good. Voyager 1998 3.0L
Thanks all. ------------------------------------------------------------------

Your response:

PCM is the correct term and as for the SCI part
u would need a dealer scanner to talk on the SCI bus.
the normal bus is the CCD and any little scanner can do this

 

the SCI is for a dealer only scanner it programs and reads the PCM only
When the software is needed to be updated on the PCM the SCI bus is used and again because I know I said it b4 this is a dealer only bus system

 

You wrote "the normal bus is the CCD and any little scanner can do this"
Could you give me some hints on which one, then. And what is the protocol used on this vehicule. Thanks again