New Holland CX720 Repair Manual page 3919

7. Turn the key switch to the ON position. Use the InfoView monitor - Dealer Diagnostics screen to manually power
the fan speed/reverser relay. Disconnect connector X031, and use the multimeter to check for 12 volts between
connector X031 pin 9 and chassis ground.
A. If 12 volts is not present continue with Step 8.
B. If 12 volts is found, there is an open circuit in the cab main (CM) harness between connector X031 pin 9
and the fan speed/reverser relay K17 pin 1 wire 768 white. Locate the open and repair.
8. Key switch to the ON position. Use the InfoView monitor - Dealer Diagnostics screen to manually power the
fan speed/reverser relay. Use the multimeter to check for 12 volts between connector X020 J3-12 and chassis
ground.
A. If 12 volts is not present, replace the CCM1 with a known good controller.
B. If 12 volts is present, there is an open circuit in the front frame (FF) harness between connector X020
J3-12 and connector X031 pin 9 wire 768 white. Locate the open and repair.
9. Erase the fault code and continue operation.
A.
Series 1206-1347
Wiring harness - Electrical schematic frame 12 (A.30.A.88-C.20.E.12)
Series 1348 and above
Wiring harness - Electrical schematic frame 16 (A.30.A.88-C.20.E.16)
CROP PROCESSING - CLEANING Primary cleaning
K.62.B / 207
2 4/7/2006