Technician A says that all engine OEMs supported both J1587 and J1939 chassis data buses up until 2010. Technician B says that post-2010 Cummins and DDC engine electronics no longer support J1587 bus communications. Who is correct?

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A is correct in stating that up until 2010, all engine OEMs supported both J1587 and J1939 chassis data buses. Technician B is correct in stating that post-2010, Cummins and DDC (Detroit Diesel Corporation) engine electronics no longer support J1587 bus communications, as the industry moved towards the more advanced J1939 protocol.

Technician a Says That All Engine OEMs Supported Both J1587