New Holland CX720 Repair Manual page 3687

12. Key switch ON. Operate the concave motor using the InfoView diagnostic screen. Use a multimeter to measure
the voltage between connector X176 pin B and chassis ground.
A. If 12 volts is not read the open is between connector X176 and connector X019 J2-1 wire 694 or 522 gray
in main frame harness.
13. Disconnect connector X004. Key switch ON. Operate the concave motor using the InfoView diagnostic screen.
Use a multimeter to measure the voltage between connector X004 pin 30 and chassis ground.
A. If 12 volts is read the open is between connector X004 and connector X176 wire 695 white in the main
frame harness.
B. If 12 volts is not read the open is between connector X004 and relay base terminal 4 on relay K-16, wire
695 white in the cab main harness.
14. Disconnect connector X176 at the concave clearance motor. Use a multimeter to check for an internal short to
ground between both pin A and B.
A. If short to ground is found replace motor.
15. The bin covers actuator is bound up.
A. See the appropriate service manual chapter for repair.
16. The covers operates in one direction only. Fault codes indicate a short to ground. Disconnect the covers motor
connector X289.
A. Measure the resistance on connector X289 between pin A and pin B. The proper resistance range for the
coil is 1.0 - 5.0 ohms. If out of specification replace covers motor.
B. If the motor coil resistance is within specification continue with Step 17.
17. Measure the resistance on connector X289 between pin A and chassis ground. Flex the JP and main frame
harnesses while making this check.
A. If no continuity to ground is found, erase the fault code and continue operation.
B. If there is continuity to ground continue with Step 18.
18. Disconnect connector X195 . Use the multimeter to check for continuity between connector X195 pin 4 and
chassis ground.
A. If continuity is found continue with Step 19.
B. If no continuity is found the short to ground is in the JP harness between connector X195 and connector
X289 wire 696 white. Locate the short and repair.
19. Disconnect connector X004. Use the multimeter to check for continuity between connector X004 pin 31 and
chassis ground.
A. If continuity is found the short to ground is in the cab main harness between connector X004 and the relay
base for relay K16 terminal 4 wire 695 white.
B. If no continuity is found the short to ground is in the main frame harness between connector X004 and
connector X195 wire 696 white. Locate the short and repair.
20. Covers do not operate in either direction. Fault code indicates an open in circuit. Disconnect the covers motor
connector X289.
A. Measure the resistance on connector X289 between pin A and pin B. The proper resistance range for the
coil is 1.0 - 5.0 ohms. If out of specification replace covers motor.
B. If the motor coil resistance is within specification continue with Step 21.
21. Replace the concave/covers relay K-16 with a known good relay. Connect X289 and operate covers.
A. If the covers are now working troubleshooting is complete.
CROP PROCESSING - STORING AND HANDLING Grain storing
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