John Deere atu

[Case290]

Atu on a 1800 screen & and an atu on a 2600 screen 2 different tractors both have the same problem they cut out the steering it’s not all the time but it’s got very bad now. The one unit is 5yrs old the other 3 approx they have always do it but can’t put up with it any more. What’s causing the problem. Moved 2600 into combine for harvest not once did it fail but that had its own steering valve and wiring harness.

 

[Will 1594]

How good is power supply is it direct to battery , and good connection on plugs , wired ours direct to battery in combine and 6610 , combine never cuts out , but tractor odd time when duals on front
@CPP

 

[Northdowns Martin]

My ATU on combine used to cut out as soon as lights switched on, now wired direct to battery no issues.

 

[Case290]

Combine is wired to battery tractors through plugs in cab I’ll try direct to battery then ?

 

[Case290]

Voltage looks ok
This is the erra message I get

 

[Phil P]

Voltage looks ok
This is the erra message I get View attachment 832353View attachment 832354

The atu needs quite a few amps when it’s engaged, the tractor voltage may be fine but it will probably be dropping amps when it’s trying to operate the motor through a power socket. Try powering from the battery and see what happens. Mine use to do it all the time on my old jd combine, it wouldn’t work at all with the lights on!

 

[Case290]

And this one

 

[Phil P]

And this one View attachment 832355

The atu and the screen communicate via can-bus, a voltage drop means they stop communicating with each other.

 

[Case290]

So far so good direct onto battery one tractor done

 

[Pheasant Surprise]

The “rule of thumb” with this gear is always directly onto battery terminals as said - voltage will show fine otherwise on standstill with no other draws, but could “sag” enough to trigger a fault, when everything else (and the steering controller etc) is also drawing a decent current.

Chuck in some poor quality in-cab power sockets (Cobos etc. they’re all basically shite) the odd dodgy earth, poor pin connection, bit of moisture/dirt and you have the perfect recipe for intermittent faults.

The least worst method is direct onto battery as your bypassing a lot of these problem areas and also getting the most juice.

 

[Case290]

Just put a few hours in and it’s not missed a beet since connected to battery ?

 

[Case290]

Problem it didn’t save the settings as it’s a on of switch How do I get round that

 

[Heathland]

You should have a permanent live,battery, plus a ignition feed,just wired my Gator up for guidance.

 

[Case290]

Need to do a rewire mod then.. thought I could change a setting.. just happy the steering working perfect

 

[Brisel]

Does this not run the battery down when parked? Is there a switch somewhere?

 

[Pheasant Surprise]

Does this not run the battery down when parked? Is there a switch somewhere?

Shouldn't do, I know my old Topcon had a permanent live and switched (ignition) live and it was perfect.

You could run both feeds, permanent and switched though an....err switch, but then you can't do stuff like set the unit to remain powered for a pre-determined period after you switch the ignition off.

This means you lose the ability to regain a fast fix and/or convergence if you switch the tractor off for a short while.

 

[Phil P]

Does this not run the battery down when parked? Is there a switch somewhere?

Ideally you need a permanent live (a good one from the battery) and a switched live, the switched live isn’t as critical as the battery live as the atu and screen doesn’t pull many amps through it.
Having a switched live also enables the screen to save its settings during shutdown and use the quick start, as has been mentioned earlier in the thread.

 

[Gerbert]

In that case you can just pull the switched live form the D plug I'd say.

 

[Case290]

Atu Steering playing up could be the battery getting week the electric fan on the seed drill sucking some power after about an hour the steering starts to play up. Along with the air con and other stuff didn’t even get the lights on. Best way round that (better alternator)

 

[Case290]

found the fault it was the inline fuse holder in the wiring loom . cut that out now it’s fine