Originally Posted by
s30.hybrid
I seem to be having issues connecting to Gen 3 PCMs with an MPVI2. I have been able to read and log other PCMs so the MPVI2 does seem to work. So far all the Gen 3 PCMs have been via a bench harness that I?ve used successfully before and I?m sure they?re not bricked . I did some searching but hoping to get a sanity check on my bench harness before submitting a ticket to HPtuners. I?ve tried different laptops, cables, power supplies and even Bluetooth but my problem remains and seems to be specific to these Gen3 PCMS. ?Detect protocol failed? is all I?m getting in either VCM app.
Bench harness:
Gen 3 blue connector and OBD2 DLC
Powered using a 12v 1a adapter.
PCM pin 19 (pink) to switched 12v
PCM pin 20 and DLC 16 (orange) to 12v constant
PCM pin 59 (or 58 I tried both) and DLC 2 serial together
PCM pin 60 and DLC 4&5 (blk) grounded at power supply
Am I missing something here? Any help is appreciated. Thanks.