New Holland T8010 Manual page 1533

Master Clutch Potentiometer Short to 12 Volts or Short to 5 Vreff
Cause:
The transmission controller has detected that the clutch (inching) pedal potentiometer signal is out of range high.
Possible failure mode:
1. The pedal position potentiometer failed.
2. The wire harness of the inching pedal potentiometer is shorted to power.
Solution:
The clutch (inching) pedal position potentiometer is mounted on the side of the inching pedal and wired to the
transmission controller.
1. Check the pedal position potentiometer and its wiring through the TRANS VIEW / VIEW PEDAL screen
or the service tool.
The clutch pedal position can be viewed in the instrumentation cluster display through the TRANS VIEW/VIEW
PEDAL screen.
It can also be viewed in the monitor screen of the service tool.
If correct, the position display should be 100% when the clutch pedal is fully up and 0% when the pedal is fully
depressed.
The number should smoothly drop as the clutch pedal is depressed.
Watch the display while slowly cycling the inching pedal.
If the number change follows the pedal movement smoothly, the potentiometer and its wiring are working OK.
If the numbers are hard to control or do not fall in sequential order, replace the pedal position potentiometer.
If numbers on display are locked up and will not change when clutch pedal is cycled, check the pedal position
potentiometer and its wiring.
NOTE: There could be an intermittent problem and the tractor may still run, so check for loose connections.
2. Test the pedal position potentiometer and wiring.
Remove the rear controller cover.
Disconnect connector C351.
Measure the resistance at the harness side between pin 1 and pin 17 of connector C351. The resistance must
increase smoothly as the clutch pedal is depressed.
If the potentiometer does not work as specified above, repeat the test procedure at connector C010 and at
connector C052.
If the potentiometer does not work as specified after checking at connectors C010 and C052 replace the
potentiometer.
If the potentiometer works as specified, go to next step.
3. Check the voltage at pin 1 of connector C351.
Release the secondary lock on connector C351 and remove pin 1 from the connector. Plug connector C351
back into the controller. Turn the ignition key to the ON position. Measure the voltage at pin 1 of C351 against
ground. The voltage should change between 0 and 5 volts as the clutch pedal is depressed or released.
The fault code is recorded if the voltage exceeds 5 volts.
If the measured voltage does go higher than 5 volts, locate the short within the harness.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
Section 55 - Electrical System, Controller - Chapter 4
FAULT CODE TRANS 12
55-4-6