hallo my yellow warning seatbelt in on it was happend when battery was empty and jumpstart by A.A then notice .I find someone that put a computer and diagnose fault b101c , Driver seatbelt so whe check the seatbelt it says on line u can test it by measure between 2 3 ohm .The driver seat tensor measure 2.1 and passenger measure 1.9ohm. Cleaned all contacts do have buy a other seatbelt tensor pricey or can i but a second hand one .I looked one line its fiat ducato 2013 diesel do i need but same or can i buty one that looks similar i not can see the one whit serial number as mine Abit confused by this thanks in advance hans