![]() ![]() If you have another tractor close that you know the guidance system is working on, you can temporarily remove the ISO plug from that tractor and plug it in on the tractor that is not functioning properly. The ISO plug acts as a terminator on the CAN bus and if it fails, one of the things that will happen is the receiver will be knocked off the CAN bus. This is the same plug that is used to hook up newer planters and rate controllers. This is a big black plug next to your SCV ports on the back of the tractor. If the harness look good and the receiver is plugged in properly and you still don’t see the menu option for the receiver, you will need to inspect the ISO plug on the back of the tractor. If the harnesses are damaged they will either need to be repaired or replaced to restore proper voltages and connection. This can cause the receiver to not be available on the CAN bus. If the wire shielding is cracked on either harness, it could be that moisture has gotten into the wires and is causing the voltages to be out of their proper range. Sometimes the wires in these harnesses can fail due to sun damage. ![]() While verifying the receiver is plugged in, inspect the harness coming out of the receiver and coming out of the tractor. If your receiver does not show up as one of your menu options, verify that the receiver is plugged in properly at the front of the cab near the windshield wiper. If the GPS receiver shows up as one of your menu options then there are no hardware issues that are preventing the tractor from seeing your receiver. This is easily done by hitting the menu button on your Greenstar display. Is your GPS Receiver visible on the CAN Bus?įirst, you will need to verify that your receiver is visible on the CAN bus. Disconnecting the display from power when the machine is on can result in data loss. It is very important that the machine be off when you attempt this step. You can force they guidance system to flush its temporary memory and reboot by disconnecting the system from power. These memory states can sometimes hold onto corrupted data and prevent your AutoTrac system from functioning properly. The display and the receiver both have memory settings that enable them to start up quicker when the machine is turned on. Many times forcing the system to “cold boot” will fix most issues. Wait 5 to 10 seconds and plug them both back in and turn the machine back on. Once the machine has powered off and your Greenstar display is off, unplug the display and receiver. The first troubleshooting step you should try is turning off the machine. Have you tried turning it off and on again? ![]() Now that we have a basic understanding of the different things that are required for John Deere's AutoTrac system to function, we will move on to the top 10 things for you to look at when you can't get your AutoTrac to engage. You must toggle your resume switch to engage AutoTrac.You must turn the AutoTrac system on using the steering wheel icon on your Greenstar display.You must have a minimum signal level of 3D SF1.The tractor must be clear of any active trouble codes related to the guidance system. ![]()
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