Technician A says that most trucks that use a J1939 data bus have provision for the older J1587/1708 data bus.Technician B says that the current J1939 data bus is based on CAN 2.0 communications protocols.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Both statements are correct. Many trucks designed to use the J1939 data bus also include provisions for the older J1587/1708 data bus to ensure compatibility with older diagnostic equipment and systems. The J1939 data bus is indeed based on the Controller Area Network (CAN) 2.0 communication protocols, which is a standard designed to allow microcontrollers and devices to communicate with each other within a vehicle without a host computer.

Technician a Says That Most Trucks That Use a J1939