what exactly does the ECU do besides show you error codes?
#1
what exactly does the ECU do besides show you error codes?
I got a link to the ECU and how to reset check engine lights, and read codes. But what exactly does it do besides that? Does it reset all the sensors or something? Kinda like a reboot on a computer?
#4
That's the best I can do for a short explanation.
This may explain it much better.
http://en.wikipedia.org/wiki/Engine_Control_Unit
#5
One other thing you can get a CEL due to the value provided by a properly functioning sensor or the sensor itself may have failed. Example is an oxygen sensor, it can cause the ECU to throw a CEL because the emissions are not within an acceptable range or the emissions may be fine but the sensor itself is faulty. I believe the ECU may test some of the sensors when you first turn the car on. As is probably obvious by my post I only have a basic understanding of the system.
#7
That's the best I can do for a short explanation.
This may explain it much better.
http://en.wikipedia.org/wiki/Engine_Control_Unit
This may explain it much better.
http://en.wikipedia.org/wiki/Engine_Control_Unit
#8
You should really search before you post things. If you were to do a Google search for the ecu uses you could have found out most of these things for yourself. Don't mean to sound rude its just that if you searched and then asked when you don't understand a certain thing about what you read. Help yourself first.
#10
Please search these basic questions. Many simple car explanations car be found on www.howstuffworks.com
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