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WARNING Screen: Pump Motor Drive Power is not detected. Turn off all power. Connect the 7-pin connector. Restart.
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Power lost to motor.
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Ensure 7-pin connector is plugged into tractor.
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Loose connector or pin.
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Check 7-pin connector for proper voltage and inspect pins. See TM1023 or your John Deere dealer.
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Pinched wires in harness.
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Inspect harness for damage. See TM1023 or your John Deere dealer.
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Blown fuse.
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Check tractor fuses.
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WARNING Screen: Pump # Position Sensor not detected. Unable to adjust rate/ calculated rate goes to zero.
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Pump position sensor harness lead has an open or short.
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Inspect position sensor leads for damage and proper connection.
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Check position sensor circuit on wiring harness. See TM1023 or your John Deere dealer for sensor diagnostics.
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Unable to adjust rate. Calculated rate goes to zero.
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Pump RPM sensor harness has an open or short.
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Inspect pump RPM sensor leads for damage and proper connection.
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Check pump RPM sensor lead wiring harness. See TM1023 or your John Deere dealer.
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| Symptom |
Problem |
Solution |
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WARNING Screen: Pump # No Response to Control Command. Unable to adjust rate.
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Pump position sensor harness has an open or short.
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Check pump position sensor leads for damage and proper connection.
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Check pump position sensor circuit on wiring harness. See TM1023 or your John Deere dealer.
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Loose set screw on sensor.
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Check motor set screw for tightness.
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Motor does not turn.
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See TM1023 or your John Deere dealer for motor diagnostics.
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Check motor wiring harness for damage.
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GreenStar™ display shows "Controller Disconnected".
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Signal lost after power up.
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Perform CAN diagnostics. See TM1023 or your John Deere dealer.
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WARNING Screen: All Devices Unable to Communicate.
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CAN signal lead short to power or ground.
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Perform CAN diagnostics. See TM1023 or your John Deere dealer.
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Motor does not adjust or blown fuse.
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Pinched wires.
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Inspect for pinched wires and repair.
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Damaged connector pin.
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Inspect connector pins and repair.
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Stretched wires due to improper routing.
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Inspect for damaged wires and repair.
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WARNING Screen: Over Application.
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Small rate sprocket used on pump.
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Use large sprocket.
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WARNING Screen: Under Application.
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Large rate sprocket used on pump.
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Use small sprocket.
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WARNING Screen: V.R. Fert System Problem. Calculated rates may not be accurate.
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Drive wheel slippage.
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Increase pressure in variable rate fertilizer pneumatic contact wheel spring.
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Incorrect RPM sensor signal.
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Adjust sensor for correct gap. If gap is correct, replace sensor.
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