OMPFP17114

Symptom	Problem	Solution
External valve not responding.	Selective control valve (SCV) 3 selected during system setup.	Verify the correct operation mode is selected for SCV 1.

External valve setup button is not displayed.	Machine-side implement feedback sensor connector at rear of machine for integrated SCV control is plugged in. Early versions of harness used a 10-pin rectangular connector.	Disconnect machine-side implement feedback sensor connector.
	External valve wiring harness disconnected.	Connect external valve wiring harness. LED on external valve should light up.
	External valve installed is not compatible with machine hydraulic system design. Open-center versus closed-center designs.	Verify part number of valve installed on implement is compatible with machine hydraulic system design. (Reference Application Controller 1100 and External Valve Installation Instructions or contact your John Deere dealer for more information.)
	SCV control harness has loose or no connection to application controller harness.	Verify connections.
	SCV control harness is plugged into implement receiver or front extension harness.	Verify that SCV control harness is plugged into application controller harness.
	Inline check valve on pump hose not functioning or not present.	Install, repair, or replace check valve.

LED light is red.

Back pressure buildup in external valve.

CAUTION: When moving external valve control lever the implement may move.

Hoses connected in reverse, causing back pressure. Verify hoses are connected properly. If problem still exists, perform the following:

1. With tractor running, put hydraulics in float.

2. Key off machine.

3. Cycle external valve control lever manually several times.

4. Cycle power to clear red light.

External Valve Error.

Contact your John Deere dealer.

RW00482,0000304-19-20150619