Re: Hyundai - Diagnostic plug in engine bay
Tony Ludford
As others have said. It's a 20-pin Manufacturers diagnostic plug. It's used for programming during the vehicles build. The older variants would only have comms to things like abs, immobiliser and auxiliary modules through the 20 pin rather than the 16 pin. 16 pin was only for EOBD/OBD11 as far as Koreans were concerned
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