Hi all went to get my truck remapped today and the re mapper couldn't connect to the pcm with his tool i check all the fusses and relays but still no joy cant even read the fault codes as no scanner will connect to the van there is power going to the obd port so not shore y it wont connect i think its resonantly happen as i had a new fuel pump fitted about 3 months ago and it coded to the van no problem the van starts and drives no problems at all hoping someone on here could help and i have no idea what it could be
THANKS IN ADVANCED