Hello,

I´m trying to replace PCM 3 from Cayenne to 987 but there is something wrong because the PCM has no CAN communication with 987 and show unit will turn off in few minute because engine is not running.

Also i have Piwis and when i try to communicate PCM its not possible.

Has any one before connect PCM3 from one vehicle to other vehicle? What are the exaclty steps?


Both PCM3 are same execpt the display, and displays are changable from one pcm to other pcm and fit exactly. I think PCM3 has just one typ pcb and main chaisse and 2 different front panel, depend on vehicle model fit big or the small one.