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CarGuru > Honda > ECU & "engine running" signal question 6 February 2005 00:30:05
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ECU & "engine running" signal question

TeGGer® 5 February 2005 19:19:21
 How does the ECU know the engine's running? Does it use an alternator
output signal, or does it use the RPM pickup in the distributor?

Also, what's the purpose of the Starter Signal as used by the EFI main
relay? Is it only to energize the fuel pump relay while the engine's
cranking?


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hond­afaq/
Add comment
Mista Bone 5 February 2005 22:03:09 [ permanent link ]
 Crank postion sensor in the distributor

yes

"TeGGer®" <tegger@istop.c0m> wrote in message
news:Xns95F46962564­3Cteggeratistop@207.­14.113.17...> How does the ECU know the engine's running? Does it use an alternator> output signal, or does it use the RPM pickup in the distributor?>
Also, what's the purpose of the Starter Signal as used by the EFI main> relay? Is it only to energize the fuel pump relay while the engine's> cranking?>
--> TeGGeR®>
The Unofficial Honda/Acura FAQ> www.tegger.com/hond­afaq/


Add comment
TeGGer® 6 February 2005 00:30:05 [ permanent link ]
 "Mista Bone" <mistab0ne@nospam.n­et> wrote in
news:xT7Nd.6825$XY5­.978@fe2.columbus.rr­.com:
Crank postion sensor in the distributor


So the if the RPMs are above a certain amount, the ECU considers that the
engine is running?

I ask because obviously the crank angle sensor would be registering
movement even during starter operation.

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CarGuru > Honda > ECU & "engine running" signal question 6 February 2005 00:30:05
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