Which of the controllers is 'in charge' of managing data on a truck J1939 data bus?
A) bus topology ensures that no individual controller has this role
B) engine management ECM
C) chassis management ECU
D) instrument cluster module (ICU)

Question

Quizplus · Accepted Answer

In a J1939 data bus system, the bus topology is designed in such a way that no single controller is 'in charge' of managing data. Instead, all controllers communicate over a shared network, allowing for decentralized control and data sharing among multiple systems.

Which of the Controllers Is 'In Charge' of Managing Data