Posted 5/16/2019 07:37 (#7499657 - in reply to #7499104) Subject: RE: Agleader clutches
Southern Minnesota Between Freeborn & Wells
AutosteerAaron - 5/15/2019 21:02
First be sure you have high current power going to the CCM and clutch harness. Blown fuse will cause this error. After that it could be a wiring issue on the clutch harnessing or a bad clutch. The module sends ground to activate the clutch. When the monitor first fires up it sends a signal to every clutch and if it doesn’t relay back correctly it gives that error as if it senses a short.
This is mostly correct except I'll add a bit. Since each clutch is wired hot and each clutch contains a coil (really just a long piece of wire wrapped as a coil) if the ground connection should report back this 12V to the module. The Ag Leader system uses this fact to determine if and on which branches clutches are located. Thus it can determine is a clutch is present on a branch or not. It compares this with the configuration in use and decides if there is agreement between what it finds and what the configuration calls for. If there is a discrepancy an error message is displayed since the system could not work properly.
For example with my 24 row planter setup with 12-2 row sections there are 12 section branches with each branch spitting again for each of the two row clutches in each section. My configuration indicates that I have 12 sections. !2 volts is fed to the coils of all 24 clutches and each has a potential ground wire leading back to the Clutch Module. Upon startup and at other times, the system will look at those 12 return wires and decide if 12 Volts is present. This will be compared to the configuration and unless something has gone wrong this will be a good match and no error message appears.
In the OP, the message says the wiring has changed. Apparently it did work at one time but no longer matches. I would disconnect the two pole gray connector and use a voltmeter to test for 12V and Ground to the module. The module must get 12V and Ground on that connection. Then go to each clutch connector and check that each clutch is receiving 12V.
Ag Leader's clutch test can warn the operator if something is setup wrong in the first place or something goes wrong due to some type of failure. It can warn the operator if the clutches don't seem to be the correct number or in the correct locations. It cannot cover every combination but is certainly very useful. In my personal situation if I should lose one clutch of a pair, the other would be noted and I would not receive the error message. Since I have population monitoring as well, my on screen map should show that the offending row is continuing to plant when it should be OFF.