New Holland CX720 Repair Manual page 1931

22. Disconnect connector X004. Use a multimeter to check for continuity between connector X004 pin 28 and
chassis ground.
A. If no continuity is found, the short to ground is in the harness between connector X010 pin 3 and connector
X004 pin 28 wire 829 white. Locate the short and repair.
B. If continuity is found, the short to ground is in the harness between connector X004 pin 28 and the Throttle/
Brush relay K15 pin 5 on the fuse panel. Locate the short and repair.
23. Fault codes indicate circuit fault due to open circuit condition. Disconnect the throttle motor connector X196.
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 throttle motor.
B. The resistance is in specification. Continue with step 24.
24. Replace the Throttle/Brush relay K15 on the fuse panel with a known good relay, and retest the throttle circuit
function.
A. If the throttle circuit now functions properly, the relay was faulty, and was not providing continuity between
terminals 3 & 5 when energized. Replace the relay.
B. If the throttle circuit still does not work, continue with step 25.
25. 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 X196 pin B and chassis ground.
A. If continuity is found, continue with step 27.
B. If no continuity is found, continue with step 26.
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.
26. 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 open circuit is in the harness between connector X010 pin 1 and connector X196
pin B . Locate the open and repair.
B. If no continuity is found, the open circuit is in the harness between connector X010 pin 1 and connector
X016 pin J2-1 on wire 524 gray. Locate the open and repair.
27. Remove the Throttle/Brush relay K15 on the fuse panel, and install a jumper wire between terminals 3 & 5. Use
a multimeter to check for continuity between connector X196 pin A and chassis ground.
A. If no continuity is found, continue with step 28.
B. If continuity is found, recheck the motor for continuity at step 23. Erase the fault codes and continue
operation.
28. Disconnect connector X010. Use a multimeter to check for continuity between connector X010 pin 3 and chassis
ground.
A. If continuity is found, the open circuit is in the harness between connector X196 pin A and connector X010
pin 3 wire 829 white. Locate the open and repair.
B. If no continuity is found, continue with step 29.
29. Remove the jumper wire between terminals 3 & 5 for relay K15 on the fuse panel. Use a multimeter to check
for continuity between Throttle/Brush relay K15 terminal 5 and chassis ground.
A. If no continuity is found, the open circuit is in wire 829 white from the fuse panel through connector X004
pin 28 to connector X010 pin 3 . Locate the open and repair.
B. If no continuity is found, continue with step 30.
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
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