New Holland CX720 Repair Manual page 1932

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 23.
30. Use a multimeter to check for continuity between Throttle/Brush relay K15 terminal 3 and chassis ground.
A. If continuity is found, replace the relay. Erase the fault codes and continue operation.
B. If no continuity is found, continue with step 31.
31. Disconnect connector X004. Use a multimeter to check for continuity between connector X004 pin 26 and
chassis ground.
A. If continuity is found, the open circuit is in the harness between the Throttle/Brush relay K15 terminal 3 on
the fuse panel connector X004 pin 26 wire 525 white. Locate the open and repair.
B. If no continuity is found, , the open circuit is in the harness between connector X004 pin 26 and connector
X016 pin J2-21 wire 525 white. Locate the open and repair.
32. Fault codes and operating condition indicate that the motor has shorted to ground. Disconnect throttle motor
connector X196. Measure between terminals A or B 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 throttle motor.
B. There is no continuity to ground. Erase the fault codes and continue operation.
33. Fault codes and operating condition indicates that there is an open circuit on shared wiring between the throttle
motor and rotary screen brush motor circuits. Replace the Throttle/Brush relay K15 on the fuse panel with a
known good relay, and retest the throttle circuit function.
A. If both circuits now function properly, the relay was faulty, and was not providing continuity between the
work terminal 3 and terminals 4 & 5. Replace the relay.
B. If both circuits still do not work, continue with step 34.
34. Ensure that the batteries are connected using the battery key, and that fuse F23 is good. Remove the Throttle/
Brush relay K15 on the fuse panel. Use a multimeter to check for continuity between Throttle/Brush relay K15
terminal 3 and chassis ground.
A. If no continuity is found, continue with step 35.
B. If continuity is found, continue with step 36.
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 F23. This ground path
may be used to test for an open circuit condition.
35. Disconnect connector X004. Use a multimeter to check for continuity between connector X004 pin 26 and
chassis ground.
A. If continuity is found, the open circuit is in the harness between the Throttle/Brush relay K15 terminal 3 on
the fuse panel connector X004 pin 26 wire 525 white. Locate the open and repair.
B. If no continuity is found, , the open circuit is in the harness between connector X004 pin 26 and connector
X016 pin J2-21 wire 525 white. Locate the open and repair.
36. Unplug the throttle motor connector X196. Use a multimeter to check for continuity between connector X196
pin B and chassis ground.
A. If no continuity is found, continue with step 37.
B. If continuity is found, erase the fault codes and continue operation.
37. Disconnect inline connector X010. Use a multimeter to check for continuity between connector X010 pin 1 and
chassis ground.
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
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