New Holland CX720 Repair Manual page 3955

B. If no continuity is found, continue with step 24.
NOTE: Continuity check is being done back through circuit through the motor. The resistance will read signifi-
cantly higher than previous tests, but should not be higher than 10 ohms above the motor resistance measured
in step 14.
24. Disconnect connector X005. Use a multimeter to check for continuity between connector X005 pin 15 and
chassis ground.
A. If continuity is found, the open circuit is in the cab main (CM) harness between the Upper/lower sieve relay
K18 terminal 3 on the fuse panel connector X005 pin 15 wire 786 red. Locate the open and repair.
B. If no continuity is found, continue with step 25.
25. Disconnect connector X219. Use a multimeter to check for continuity between connector X219 pin 1 and chassis
ground.
A. If continuity is found, the open circuit is in the main frame (MF) harness between connector X005 pin 15
and connector X219 pin 1 wire 786 red. Locate the open and repair.
B. If no continuity is found, , the open circuit is in the expansion (EX) harness between connector X219 pin
1 and connector X013 pin J2-21 wire 786 red. Locate the open and repair.
26. Fault codes and operating condition indicate that the motor has shorted to ground. Disconnect lower sieve motor
connector X228. Measure between terminals D or E on the motor connector and a known good ground. There
should be no continuity to ground.
A. There is continuity to ground, indicating a short to ground in the motor. Replace the lower sieve motor.
B. There is no continuity to ground. Erase the fault codes and continue operation.
27. The upper sieve mechanism is mechanically bound up, resulting in high current draw.
A. See the appropriate repair manual chapter for repair and adjustment of the upper sieve linkage.
28. Fault codes indicate circuit fault due to short to ground between the upper sieve motor and the Upper/lower
sieve relay K18. Disconnect the batteries using the battery key. Unplug the upper sieve motor connector X227
. Use a multimeter to check for continuity between connector X227 pin D and chassis ground.
A. If continuity is found, continue with step 29.
B. If no continuity is found, erase the fault codes and continue operation.
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.
29. Disconnect connector X072. Use a multimeter to check for continuity between connector X072 pin H and chas-
sis ground.
A. If no continuity is found, the short to ground is in the lower frame rear (LR) harness between connector
X227 pin D and connector X072 pin H wire 792 white. Locate the short and repair.
B. If continuity is found, continue with step 30.
30. Disconnect connector X025. Use a multimeter to check for continuity between connector X025 pin 17 and
chassis ground.
A. If no continuity is found, the short to ground is in the straw walker (SW) harness between connector X072
pin H and connector X025 pin 17 wire 792 white. Locate the short and repair.
B. If continuity is found, continue with step 31.
31. Disconnect connector X219. Use a multimeter to check for continuity between connector X219 pin 3 and chassis
ground.
A. If no continuity is found, the short to ground is in the expansion (EX) harness between connector X025
pin 17 and connector X219 pin 3 wire 792 white. Locate the short and repair.
CROP PROCESSING - CLEANING Primary cleaning
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