CAN Communications - Toyota Yaris Forums

Kitt · 02-20-2007, 01:39 PM

I was reading the service manual and I found the last part which talks about the CAN communication system on the car, Can someone explain me what exactly is that???

El Jefe · 02-20-2007, 11:43 PM

can = controller area network. bascially meaning that you have a bunch of small computers throughout the car that all the sensors and actuators connect to. these computers communicate with each other over the CAN lines, basically 2 wires. so instead of having to run a wire from the back of the car all the way up to the ecu under the dash you can run the wires from the sensor to one of the small computers near it, then that computer sends the info to the computers that need it. so instead of having the massive wire harnesses running through the car they are much smaller (less weight and lower cost to make)
i hope that makes sence, if you have anymore questions just ask em

yrsdrgn · 02-20-2007, 11:58 PM

so what would happen if one of the computers malfunctions or breaks down?

El Jefe · 02-21-2007, 02:51 AM

Quote:

Originally Posted by yrsdrgn

so what would happen if one of the computers malfunctions or breaks down?

it will throw trouble codes, and possibly go into a limp home type of mode, and maybe limit the things it controls. the whole system wouldnt go down
think of it as a regular computer network, a bunch of desktops all linked together that share info

Kitt · 02-21-2007, 02:46 PM

IC, thanks for the info bro, does my car has that too? it is a 1st gen tough...

02-20-2007, 01:39 PM	#1
Kitt View User's Garage Drives: Thndr cl metallic HB 3 drs '05 Join Date: Mar 2006 Location: Panama City, Panama Posts: 793	CAN Communications I was reading the service manual and I found the last part which talks about the CAN communication system on the car, Can someone explain me what exactly is that??? __________________ 10 years... alive and kickin'!!

02-20-2007, 11:43 PM	#2
El Jefe Drives: 07 yaris s sedan Join Date: May 2006 Location: california uber alles! (sacramento) Posts: 204	can = controller area network. bascially meaning that you have a bunch of small computers throughout the car that all the sensors and actuators connect to. these computers communicate with each other over the CAN lines, basically 2 wires. so instead of having to run a wire from the back of the car all the way up to the ecu under the dash you can run the wires from the sensor to one of the small computers near it, then that computer sends the info to the computers that need it. so instead of having the massive wire harnesses running through the car they are much smaller (less weight and lower cost to make) i hope that makes sence, if you have anymore questions just ask em __________________ 2007 S Sedan, NF210's, 5% rear windows, 35% front two, Sirius S50, 15" black konig heliums

02-20-2007, 11:58 PM	#3
yrsdrgn View User's Garage Drives: 2007 Yaris Join Date: Jan 2007 Location: SF,CA Posts: 1,874	so what would happen if one of the computers malfunctions or breaks down? __________________

02-21-2007, 02:46 PM	#5
Kitt View User's Garage Drives: Thndr cl metallic HB 3 drs '05 Join Date: Mar 2006 Location: Panama City, Panama Posts: 793	IC, thanks for the info bro, does my car has that too? it is a 1st gen tough... __________________ 10 years... alive and kickin'!!