New Holland CX720 Repair Manual page 3956

B. If continuity is found, continue with step 32.
32. Disconnect connector X005. Use a multimeter to check for continuity between connector X005 pin 17 and
chassis ground.
A. If no continuity is found, the short to ground is in the main frame (MF) harness between connector X219
pin 3 and connector X005 pin 17 wire 792 white. Locate the short and repair.
B. If continuity is found, the short to ground is in the cab main (CM) harness between connector X005 pin 17
and the Upper/lower sieve relay K18 pin 4 on the fuse panel wire 792 white. Locate the short and repair.
33. Fault codes indicate circuit fault due to open circuit condition. Disconnect the upper sieve motor connector X227.
Measure the resistance of the motor between terminals A and B. The correct resistance is 3 - 12 ohms.
A. The resistance is infinite, indicating an open condition in the motor. Replace the upper sieve motor.
B. The resistance is in specification. Continue with step 34.
34. Ensure that the batteries are connected using the battery key, and that fuse F27 is good. Use the multimeter to
check for continuity between connector X227 pin E and chassis ground.
A. If continuity is found, continue with step 37.
B. If no continuity is found, continue with step 35.
NOTE: The CCM module connects both sides of the circuit to ground when in neutral to "lock" the motor in
position, irregardless of key switch position, as long as it receives power through fuse F27. This ground path
may be used to test for an open circuit condition.
35. Disconnect connector X072. Use a multimeter to check for continuity between connector X072 pin J and chassis
ground.
A. If continuity is found, the open circuit is in the lower frame rear (LR) harness between connector X072 pin
J and connector X227 pin E wire 791 gray. Locate the open and repair.
B. If no continuity is found, continue with step 36.
36. Disconnect connector X025. Use a multimeter to check for continuity between connector X025 pin 14 and
chassis ground.
A. If continuity is found, the open circuit is in the straw walker (SW) harness between connector X072 pin J
and connector X025 pin 14 wires 791 gray or 785 gray. Locate the open and repair.
B. If no continuity is found, the open circuit is in the expansion (EX) harness between connector X025 pin 14
and connector X013 pin J2-1 wire 785 gray. Locate the open and repair.
37. Use a multimeter to check for continuity between connector X227 pin D and chassis ground.
A. If no continuity is found, continue with step 38.
B. If continuity is found, recheck the motor for continuity at step 33. Erase the fault codes and continue
operation.
38. Disconnect connector X072. Use a multimeter to check for continuity between connector X072 pin H and chas-
sis ground.
A. If continuity is found, the open circuit is in the lower frame rear (LR) harness between connector X227 pin
D and connector X072 pin H wire 792 white. Locate the open and repair.
B. If no continuity is found, continue with step 39.
39. Disconnect connector X025. Use a multimeter to check for continuity between connector X025 pin 17 and
chassis ground.
A. If continuity is found, the open circuit is in the straw walker (SW) harness between connector X072 pin H
and connector X025 pin 17 wire 792 white. Locate the open and repair.
B. If no continuity is found, continue with step 40.
CROP PROCESSING - CLEANING Primary cleaning
K.62.B / 244
2 4/7/2006