FAQ : 41 : What is an ECU - C4

FAQ

FAQ #41

	What is an ECU
	ECU (Electronic Control Unit). An ECU is an electronic control unit (microprocessor) and is used to control various engine running functions e.g injection timing/multiple injection/idle speed/fuel pressure etc. The ECU is informed what the engine is doing and what is required of it by sensors from various points sending back information to the control unit. e.g engine temperature/engine speed/road speed/throttle position/fuel pressure etc. The ECU is making decisions constantly based on the information that it receives. If one of the sensors is faulty and the ECU decides that the reading from that sensor can't be right then it runs the engine to a pre determined "limp home mode" until the sensor is fixed so as to avoid being a non runner for a simple sensor fault.
Views	3841 (Unique 2396)
Member Rating :	9.0 - 1 vote
FAQ Posted by	j-c
Info	Created: 25 April 2007 Last Updated: 25 April 2007

mwj666 wrote this in the forum 23 Dec 2021 : 15:11

C4GP Piloted Manual gearbox sensor swaps

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vexorg wrote this in the forum 23 Dec 2021 : 16:08

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mafiltenborg wrote this in the forum 26 Dec 2021 : 04:54

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rick wrote this in the forum 27 Dec 2021 : 05:53

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dzidek23 wrote this in the forum 27 Dec 2021 : 06:19

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khsofiane wrote this in the forum 27 Dec 2021 : 07:34

C4 picasso 2017 flair android auto issues

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ChrisKnott wrote this in the forum 01 Feb 2021 : 09:35

16% car insurance saving with Chris Knott

Car club members and enthusiasts save 16% on average against their car insurance renewal by switching to Chris Knott*. Get a Chris Knott quote this month and you'll gain entry in our prize draw too. - Click Here - QUOTELINE: 0800 [more ...]

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