New Holland CX720 Repair Manual page 2437

6. Shift the transmission through all gears and monitor the voltage readings.
A. If 7.3 - 9.0 volts reading is now viewed continue with Step 2.
B. If 7.3 - 9.0 volts reading cannot be generated erase the fault code and continue operation.
Series 1206 and above
Wiring harness - Electrical schematic frame 09 (A.30.A.88-C.20.E.09)
Series 1348 and above
Wiring harness - Electrical schematic frame 27 (A.30.A.88-C.20.E.27)
POWER TRAIN - TRANSMISSION Mechanical
2 4/7/2006
C.20.B / 99