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Norge ABS stays lit

H

Hit Man

Tuned and Synch'ed
Joined
May 20, 2010
Messages
36
A friend of mine has a Norge with an ABS light that stays lit. I think he understands the cancellation function on the menu, has checked the fuses and battery connections.

Battery was drained flat once, and the ABS lead to the battery was disconnected. It has been reconnected (it goes on the positive terminal, right?).

If the battery has low voltage, is it possible for the the engine to start and operate normally yet still be too low to allow proper ABS function?

Any other ideas appreciated.
 
No, I don't think that's possible. There's minimal voltage under which the engine won't even try to start, but once it runs all electronics are powered off the alternator. Has he checked for errors on the dashboard (in the diagnostics menu)?

Aren't there 2 leads to the battery, a red on the + and a black on the - ?

Your friend is lucky his battery is still alive: these AGMs don't appreciate at all to be drained flat!
 
Part number 13 Is the ABS sensor and 11 is the Sensor ring. If the sensor is bad or the connector end is not seated right or corroded then the ABS light will never go out, other possibility is a bad ABS computer.

abs.jpg
 
Low voltage is also possible as you asked. There may be enough voltage to start and run the bike, but the voltage may dip enough during a start cycle to trigger an ABS fault. Once tripped it stays active. I see this all the time with BMW ABS systems. I haven't seen it with a Guzzi yet, but it is possible. What year is the Norge and how old is the battery?
 
John - not saying you're wrong, but what you're describing doesn't really make sense (i.e. I'd call it a bug in the ABS firmware)! On our Guzzis, ABS is activated only after the bike has travelled a certain distance, at a speed over 5km/h if memory serves me well. With the engine running. This would be a perfect way to filter out voltage dips — and given the importance of the device, a clever engineer would have added buffering against transient voltage dips too!
 
Hello;

I had this problem... It is a poor connection at the battery.. The ABS is very voltage sensitive, if the battery is at all low, it will not activate. In my case it was simple corrosion. I cleaned the terminals, and the ring connectors at the battery. As long as they are clean and shiny the ABS is ok... As soon as I get a solid light I know it't time to clean the terminals..
 
RJVB said:
John - not saying you're wrong, but what you're describing doesn't really make sense (i.e. I'd call it a bug in the ABS firmware)! On our Guzzis, ABS is activated only after the bike has travelled a certain distance, at a speed over 5km/h if memory serves me well. With the engine running. This would be a perfect way to filter out voltage dips — and given the importance of the device, a clever engineer would have added buffering against transient voltage dips too!
Click to expand...

Same with the BMW system. You have to go a certain distance. Low battery will cause the BMW system to fault and the bike runs just fine.
 
John, It's a 2008, original battery, only 1,300 miles.

All -Thanks for the other ideas; it starts and otherwise runs like a top.

Can someone confirm what there are for ABS connections that go directly to the battery?
 
Hit Man said:
John, It's a 2008, original battery, only 1,300 miles.

All -Thanks for the other ideas; it starts and otherwise runs like a top.

Can someone confirm what there are for ABS connections that go directly to the battery?
Click to expand...

Since it hasn't been used much the battery could be in a weakened condition. I would not take that off my list of possible faults until you have eliminated any less than ideal wiring connections.
 
I'll ask my question a different way.

In addition to the cables that connect to the battery, are there some leads with ring terminals that are ABS related that connect directly to the battery posts? Just one additional to the + on post, or is there also an ABS lead that connects to the - post?
 
Hit Man said:
I'll ask my question a different way.

In addition to the cables that connect to the battery, are there some leads with ring terminals that are ABS related that connect directly to the battery posts? Just one additional to the + on post, or is there also an ABS lead that connects to the - post?
Click to expand...

Look at the schematic here. https://www.guzzitech.com/guzzi007/s ... ge_ABS.gif 26 is the battery. 64 is the ABS controller. There are two fused circuits from the power lead on the battery to the ABS units. Identify these fuses and start tracing the wires on your bike.
 
Ah... there is another thing to check.... The "fuse blocks" that are used are really Rubber holders that connect the bladed fuses to the wire connector directly. So they have a problem, and that is when you push the fuse in, it can push the wire out the bottom, or really only "touch" not connect... So, re-check the connection between the fuse and the wire connector, make sure they are really seated correctly and tightly... I found mine had backed off a bit!
 
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