dumb question about EBS - MVAgusta.net
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post #1 of 28 (permalink) Old 04-14-2009, 10:18 AM Thread Starter
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dumb question about EBS

Guys,

Can you answer this?

The EBS Relay and the EBS Relay Valve are the same or are they two different part #'s?

If they are two different parts, how do you know which one to replace.


My bike does have the problem of the system shutting down and sounding like a V-Twin but it only happens when my battery is low.

2005 MV F4-1000S
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post #2 of 28 (permalink) Old 04-14-2009, 11:28 AM Thread Starter
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anybody?

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post #3 of 28 (permalink) Old 04-14-2009, 12:02 PM
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The EBS relay monitors revs and speed of decrease of engine revs, it thens send a signal to the EBS valve and ecu,
The ecu (1000S) then tries to fuel two cylinders (No2&3) but the EBS relay takes the 12v+ve off injector 3 and also opens the air valve which admits air to cylinder 2, hence no2 cylinder recieves additional air and fuel on the over run to oppose the braking torque.

The EBS relay is fastened to the LH frame rail just behind the headstock, the valve is located at the bottom of the 10/12mm tube that is visible coming off the bottom of the air box just above the throttle bodies

From past experience it is usually the relay that causes the problems, it should havea number on it

(This reply has not been checked for punctuation, grammar, or spelling mistakes and is devoid of any big long cleverwords or condescending manner)


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Previously (and about 40 others)748SP, S4, S4R, 98R1, 2000 F4, F41000S, F41000R, 08R1, 09R1, S1000RR, RSV4 Factory aPRC in Garage now
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post #4 of 28 (permalink) Old 04-14-2009, 12:05 PM Thread Starter
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Quote:
Originally Posted by mikef4uk View Post
The EBS relay monitors revs and speed of decrease of engine revs, it thens send a signal to the EBS valve and ecu,
The ecu (1000S) then tries to fuel two cylinders (No2&3) but the EBS relay takes the 12v+ve off injector 3 and also opens the air valve which admits air to cylinder 2, hence no2 cylinder recieves additional air and fuel on the over run to oppose the braking torque.

The EBS relay is fastened to the LH frame rail just behind the headstock, the valve is located at the bottom of the 10/12mm tube that is visible coming off the bottom of the air box just above the throttle bodies

From past experience it is usually the relay that causes the problems, it should havea number on it
Thanks. So it's that little black box next to the diode, right?

I ordered part number 8000A3729 and just wanted to be sure.

I'm headed to NJMP this weekend and would hate to lose out on the track day for a stinkin' relay.

2005 MV F4-1000S
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post #5 of 28 (permalink) Old 04-14-2009, 12:07 PM
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Originally Posted by Turbo329 View Post
Thanks. So it's that little black box next to the diode, right?

I ordered part number 8000A3729 and just wanted to be sure.

I'm headed to NJMP this weekend and would hate to lose out on the track day for a stinkin' relay.
About two inches behind the headstock

(This reply has not been checked for punctuation, grammar, or spelling mistakes and is devoid of any big long cleverwords or condescending manner)


MV's all gone now, still have a soft spot for MV's, waiting for MV to tick all my boxes again.
Previously (and about 40 others)748SP, S4, S4R, 98R1, 2000 F4, F41000S, F41000R, 08R1, 09R1, S1000RR, RSV4 Factory aPRC in Garage now
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post #6 of 28 (permalink) Old 04-14-2009, 12:14 PM Thread Starter
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Quote:
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About two inches behind the headstock
Gotcha. Thanks.

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post #7 of 28 (permalink) Old 04-14-2009, 01:46 PM
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That is the correct part number for the relay on the 2005 model.
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post #8 of 28 (permalink) Old 04-14-2009, 01:49 PM Thread Starter
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That is the correct part number for the relay on the 2005 model.
Thanks CAG.

I should have the part in a day or so.

Better safe than sorry. With my fortune, I'd hate to have it take a crap on me Saturday morning after the first session. hahahahahahahhahaa

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post #9 of 28 (permalink) Old 04-15-2009, 02:16 AM
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Quote:
Originally Posted by mikef4uk View Post
The EBS relay monitors revs and speed of decrease of engine revs, it thens send a signal to the EBS valve and ecu,
The ecu (1000S) then tries to fuel two cylinders (No2&3) but the EBS relay takes the 12v+ve off injector 3 and also opens the air valve which admits air to cylinder 2, hence no2 cylinder recieves additional air and fuel on the over run to oppose the braking torque.

The EBS relay is fastened to the LH frame rail just behind the headstock, the valve is located at the bottom of the 10/12mm tube that is visible coming off the bottom of the air box just above the throttle bodies

From past experience it is usually the relay that causes the problems, it should havea number on it
Hi Mike

Did u or anybody else come up with away to bypass the relay if it goes.. ie. a simple re-wire and take it out the link .. just in case your out and it fails ?
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post #10 of 28 (permalink) Old 04-15-2009, 02:59 AM
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Hi Mike

Did u or anybody else come up with away to bypass the relay if it goes.. ie. a simple re-wire and take it out the link .. just in case your out and it fails ?

I never looked into it, I know removing it doesn't work as the bike drops on to 2 cylinders, and I think you would probably need 2or3 links to make the bike work correctly, plus I don't think it's too easily accessable either from a side of the road point of view

(This reply has not been checked for punctuation, grammar, or spelling mistakes and is devoid of any big long cleverwords or condescending manner)


MV's all gone now, still have a soft spot for MV's, waiting for MV to tick all my boxes again.
Previously (and about 40 others)748SP, S4, S4R, 98R1, 2000 F4, F41000S, F41000R, 08R1, 09R1, S1000RR, RSV4 Factory aPRC in Garage now
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