New Holland T8010 Manual page 1577

C1-2 Clutch Solenoid Coil Shorted Or Its Wiring Shorted To Power
Cause:
The transmission controller has turned C1-2 clutch solenoid OFF but sensed current in the circuit.
Possible failure mode:
1. The C1-2 clutch solenoid coil shorted to power.
2. C1-2 clutch solenoid wiring shorted to power.
Solution:
The transmission controller measures the current from the C1-2 clutch solenoid circuit. If the current is higher than
a set limit, it means the circuit is shorted to power.
1. Remove the controller cover from the rear of the tractor. Visually inspect the wiring harness from the
transmission controller towards the solenoids under the cab. Check for abnormal routing and wire damage.
2. Disconnect connector C350 and C353 from the transmission controller.
Measure the resistance between cavity 6 of connector C350 and cavity 6 of connector C353 at the wiring
harness side.
The resistance should be around 10 ohms.
3. Measure the resistance between cavity 6 and cavity 1 of connector C350.There should be no continuity. If the
resistance is less than a few ohms, there is a shortage from the wire to the power. Check for wire damage
between C1-2 clutch solenoid wiring and fuse #44.
4. Next measure the resistance between cavity 6 of connector C353 and cavity 1 of connector C350. There
should be no continuity. If the resistance is less than a few ohms, there is a shortage from the wire to the
power. Check for wire damage between C1-2 clutch solenoid wiring and fuse #44.
5. Measure the resistance between cavity 6 and cavity 20 of connector C350. There should be no continuity. If
the resistance is less than a few ohms, there is a shortage from the wire to the power. Check for wire damage
between C1-2 clutch solenoid and cavity 5 of Neutral Relay.
6. Next measure the resistance between cavity 6 of connector C353 and cavity 20 of connector C350.
There should be no continuity. If the resistance is less than a few ohms, there is a shortage from the wire to the
power. Check for wire damage between C1-2 clutch solenoid and cavity 5 of Neutral Relay.
7. If no problem could be found in the above checks continue with item 8.
8. Remove wire/pin 6 from connector 350 and remove wire/pin 6 from connector 353. See the instructions near
the beginning of this section for the proper procedure. Once the wires/pins are removed reconnect the
connectors back to the transmission controller.
9. Place the transmission control lever in Park position. Start the engine and raise the inching pedal.
10. Check for voltage from pin 6 to the ground. The voltage should be 0 volts. Operate tractor functions such as
PTO, MFD, Diff Lock, AC, lights etc., to locate the source of shortage. It may be necessary to drive the tractor
and shift gears up and down while checking for voltage. If under any condition voltage is present, pursue
troubleshooting for a short circuit accordingly.
11. Repeat the procedure from above checking for shortage from pin 6 to ground.
12. When the check is completed return the wire/pin to the proper cavity in each connector. See the instructions
near the beginning of this section for the proper procedure.
Section 55 - Electrical System, Controller - Chapter 4
FAULT CODE TRANS 116
55-4-50