7290-457 L4 Multiplex system

In Hexadecimal how many characters are there?

• four

• sixteen

• seventeen

• two

Why is multiplexing used in a modern car?

• reduces amount of wiring

• Increases amount of wiring

• It stops ECU's from transmitting to each other

• It remotely operates things

What are the connection points of multiplexing known as?

• Ports

• ECU's

• Nodes

• Hex

What is CAN?

• Car Area Network

• Computer And Network

• Centrally Active Nodes

• Controller Area Network

In a CanBus the wires are twisted, why?

• To cancel out interference

• To make the wires shorter

• For added strength

• So they can be easily identified

Why is CAN divided into two?

• So it can do more than one task

• Should one signal fail, ECU still receives signal

• Because there are two wires

• It is Binary so must be in two's

What is Can Hi operating voltage?

• 2.5 - 1.25 v

• 5 - 2.5 v

• 2.5 - 3.75 v

• 1.25 - 2.5 v

What is Can Lo operating voltage?

• 1.25 - 5 v

• 2.5 - 1.25 v

• 3.75 - 2.5 v

• 5 - 3.75 v

Multiplex systems have how many wires?

• four

• five

• two

• one

Which ECU has highest priority?

• Braking system

• Engine management

• Convenience

• Fuel system