New Holland CX720 Repair Manual page 2227

B. The circuit does not work properly. Continue with step 5.
5. Disconnect the batteries using the battery key. Unplug the rotary screen brush motor connector X206 . Use the
multimeter to check for continuity between connector X206 pin B and chassis ground.
A. If continuity is found, continue with step 6.
B. If no continuity is found, continue with step 7.
NOTE: The CCM module connects both sides of the circuit to ground when in neutral to "lock" the motor in
position. Power must be removed from the module prior to testing for short to ground condition on the motor
circuit to remove this ground path.
6. Disconnect inline connector X010. Use a multimeter to check for continuity between connector X010 pin 1 and
chassis ground.
A. If continuity is found, the short to ground is in the main frame (MF) harness between connector X010 pin
1 and connector X016 pin J2-1 wire 524 gray. Locate the short and repair.
B. If no continuity is found, the short to ground is in the engine (EN) harness between connector X010 pin 1
and connector X206 pin B on wire 524 gray. Locate the short to ground and repair.
7. Use a multimeter to check for continuity between connector X206 pin A and chassis ground.
A. If continuity is found, continue with step 8.
B. If no continuity is found, erase the fault codes and continue operation.
8. Disconnect connector X010. Use a multimeter to check for continuity between connector X010 pin 2 and chassis
ground.
A. If no continuity is found, the short to ground is in the harness between connector X206 pin A and connector
X010 pin 2 wire 821 white. Locate the short and repair.
B. If continuity is found, continue with step 9.
9. Remove the Throttle/Brush relay K15 from the fuse panel. Use a multimeter to check for continuity between the
Throttle/Brush relay K15 terminal 4 and chassis ground.
A. If continuity is found, the short to ground is in wire 821 white from the fuse panel through connector X004
pin 27 to connector X010 pin 2 . Locate the short and repair.
B. If no continuity is found, continue with step 10.
10. Use a multimeter to check for continuity between the Throttle/Brush relay K15 terminal 3 and chassis ground.
A. If continuity is found, continue with step 11.
B. If no continuity is found, replace the relay. Erase the fault codes and continue operation.
11. Disconnect inline connector X004. Use a multimeter to check for continuity between connector X004 pin 26
and chassis ground.
A. If continuity is found the short to ground is in the main frame (MF) harness between connector X004 pin
26 and connector X016 pin J2-21 wire 525 gray. Locate the short and repair.
B. If no continuity is found, the short to ground is in the cab main (CM) harness between connector X004 pin
26 and the Throttle/Brush relay K15 pin 3 on the fuse panel.
12. Fault codes indicate circuit fault due to open circuit condition. Disconnect the rotary screen brush motor con-
nector X206. Measure the resistance of the motor between terminals A and B. The correct resistance is xx to
xx ohms.
A. The resistance is infinite, indicating an open condition in the motor. Replace the rotary screen brush motor.
B. The resistance is in specification. Continue with step 13.
13. Ensure that the batteries are connected using the battery key, and that fuse F23 is good. Use the multimeter to
check for continuity between connector X206 pin B and chassis ground.
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