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Old 10-13-2010, 05:12 PM   This thread is in the EcoModder Project Library | #1 (permalink)
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Engine off coasting on my matrix

I want to be able to coast with the engine off but leave the ECU, dash, & scangauge on.

From my searching it looks like what I need to do is make a kill switch for my fuel injectors. I went digging through my low voltage scrap wire box and found a 12v 40A relay that came off a HID kit. It is designed as a normally open circuit but I think I can make that work bu using a normally closed momentary switch.

My issue is finding the Injector fuse, any idea as to which one that might be on a 2006 Matrix?

All I saw in the fuse box that might be it was a 20A EFI fuse and a corresponding EFI relay. No hint as to what EFI stands for.

Ideas?
Hints?

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Old 10-13-2010, 05:19 PM   #2 (permalink)
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Yeah, that dash reboots slooow...

EFI is electronic fuel injection, but that circuit seems to contain a lot of stuff normally, likely the computer that controls all the dash stuff.
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Old 10-13-2010, 05:22 PM   #3 (permalink)
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The dash does boot slowly.

There is a EFI 2 (15A) and and EFI (20A). Which one does what?
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Old 10-13-2010, 05:31 PM   #4 (permalink)
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Take the fuse out and see if the car starts.
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Old 10-13-2010, 05:37 PM   #5 (permalink)
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that might work, but it will not tell me what else is on the circuit.
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Old 10-13-2010, 07:28 PM   #6 (permalink)
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I did some searching for wiring diagrams. I found one for a 2003 matrix, my 06 should be similar but not exactly the same.

Anyone want to read these and give me a none EE description?
What does the EFI fuse do?

If these do not help I have 20 other pdf to sort through.

Page 1


Page 2+3


4+5


6+7


8+9


Thanks!
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Old 10-13-2010, 08:03 PM   #7 (permalink)
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Quote:
Originally Posted by Weather Spotter View Post
I want to be able to coast with the engine off but leave the ECU, dash, & scangauge on.
Don't they come back online when you turn the key back into its normal driving position (II) ?

If I put it back to II too fast, even the engine will come back on !
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Last edited by euromodder; 10-13-2010 at 08:09 PM..
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Old 10-13-2010, 08:49 PM   #8 (permalink)
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Dash does but I do not like power cycling the ECU. I do not think that the SC comes back on (or it takes a while).
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Old 10-13-2010, 08:56 PM   #9 (permalink)
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All I do with my Vibe is to stick it in Neutral, turn the engine off with the key, wait a few sec's turn the engine power back on with out hitting the starter and coast. This way I still have power steering while coasting, then bump start it when it necessary. My ScanGauge is in Hybrid mode so that stays on, car will coast quite a way.

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Old 10-13-2010, 09:11 PM   #10 (permalink)
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Quote:
Originally Posted by Neddy Seagoon View Post
All I do with my Vibe is to stick it in Neutral, turn the engine off with the key, wait a few sec's turn the engine power back on with out hitting the starter and coast. This way I still have power steering while coasting, then bump start it when it necessary. My ScanGauge is in Hybrid mode so that stays on, car will coast quite a way.

Neddy
I will have to try this on one of my mile long coasts and see what happens, it has been a while since I tried this.

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