do fbodies use any kind of bus communications?
do fbodies use any kind of bus communications? i work at a chrysler/jeep/dodge dealership and am familiar with the older PCI bus, CAN-C, CAN-B, etc. Then when talking fbodies and diagnosing things i wonder if theres any kind of bus anywhere on these cars. PCM? cluster? anything at all?
Yes, they do. That is how the PCM communicates with all the various sensors and such, including through the OBD port under the dash. I am not sure what protocol it uses, though. I am sure you could Google it and find out.
ok whats that? i need to know this joke.
i can see the DLC under the dash being a bus but what do you mean communicating with the various sensors? i know for a fact pcm to sensors arent bus. those are simply reference, ground, and signal wires. im wondering about PCM, BCM, cluster communications.
i can see the DLC under the dash being a bus but what do you mean communicating with the various sensors? i know for a fact pcm to sensors arent bus. those are simply reference, ground, and signal wires. im wondering about PCM, BCM, cluster communications.
From Wikipedia "A modern automobile may have as many as 50 electronic control units (ECU) for various subsystems. Typically the biggest processor is the engine control unit, which is also referred to as "ECU" (this is a bit out of date, we call ours a PCM, or Powertrain Control Module, some manufacturers call theirs an ECM, or Engine Control Module if they have a separate TCM, or Transmission Control Module) in the context of automobiles; others are used for transmission, airbags, antilock braking, cruise control, audio systems, windows, mirror adjustment, etc. Some of these form independent subsystems, but communications among others are essential. A subsystem may need to control actuators or receive feedback from sensors. The CAN standard was devised to fill this need.
The CAN bus may be used in vehicles to connect engine control unit and transmission, or (on a different bus) to connect the door locks, climate control, seat control, etc. Today the CAN bus is also used as a fieldbus in general automation environments, primarily due to the low cost of some CAN Controllers and processors."
Hope this helps.
The CAN bus may be used in vehicles to connect engine control unit and transmission, or (on a different bus) to connect the door locks, climate control, seat control, etc. Today the CAN bus is also used as a fieldbus in general automation environments, primarily due to the low cost of some CAN Controllers and processors."
Hope this helps.
Last edited by koolaid_kid; Oct 4, 2008 at 05:24 AM.
ok whats that? i need to know this joke.
i can see the DLC under the dash being a bus but what do you mean communicating with the various sensors? i know for a fact pcm to sensors arent bus. those are simply reference, ground, and signal wires. im wondering about PCM, BCM, cluster communications.
i can see the DLC under the dash being a bus but what do you mean communicating with the various sensors? i know for a fact pcm to sensors arent bus. those are simply reference, ground, and signal wires. im wondering about PCM, BCM, cluster communications.
Trending Topics
TECH Enthusiast
Joined: Aug 2006
Posts: 502
Likes: 1
GM vehicles do use a serial communication protocol between the controllers. But, it is a proprietary UART (universal asynchronous receiver/transmitter) serial communication developed by GM. SAE has labeled it as GM UART. CAN (controller area network) is another form of serial communication and is owned by Bosch. Licensing fees must be paid to Bosch to use CAN.
Needless to say, both are serial communications protocols. Just different flavors.
Needless to say, both are serial communications protocols. Just different flavors.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
