Troubleshoot General Monitor-Control Systems

Display does not power up when tractor key switch is on.

Blown tractor fuse.

Check and replace fuses.

Monitor display does not have power.

Tractor key switch on. Check for 12 volts nominal at monitor display connector pins 1 and 8. If voltage is within specification, connect a monitor that is known to work to determine if existing monitor is faulty. If voltage is not within specification, repair or replace tractor wiring harness.

Implement controllers are not present on display.

Disconnected harness.

Check CAN Bus harness connections at back of tractor and at controller.

Bad harness.

See your John Deere dealer.

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