New Holland T8010 Manual page 1548

FNRP pod in illogical state (two position on at same time)
Cause:
If FNRP pot indicates two of the three positions (Neutral, Forward, and Reverse) are in ON position at the same
time, the transmission controller will record this fault code.
Possible failure modes:
1. The transmission control (FNRP) pot failure
2. Wiring harness problem from the transmission control (FNRP) pot to the transmission controller.
Solution:
The transmission control (FNRP) pod is directly wired to the transmission controller. The transmission controller
monitors the shuttle shifting and displays the shuttle position on the instrumentation cluster.
1. Troubleshooting by viewing the shuttle position display.
In some cases, problems can be detected by viewing the display while shifting the transmission control (FNRP)
lever.
Turn Key 'ON' and watch the shuttle position display.
If Forward icon lit on display when in park and in neutral, either the Forward switch failed closed or its wiring
shorted to power.
If Reverse icon lit on display when in park and in neutral, either the Reverse switch failed closed or its wiring
shorted to power.
If Neutral icon remains ON steady when the Forward or Reverse is selected, either the Neutral switch failed open or
its wiring shorted to ground.
2. Troubleshooting by checking FNRP switch function.
Disconnect the cover panel under the steering column. Locate connector C051. Measure continuities on the
transmission control (FNRP) pot side.
Measure between Pin 6 (Forward) and Pin 8 (5 Vref), there should be about 500 - 600 Ohms when in Forward
position and about 2500 - 3000 Ohms when in other positions. If not, the Forward switch failed.
Measure between Pin 5 (Reverse) and Pin 8, there should be about 500 - 600 Ohms when in Reverse position and
about 2500 - 3000 Ohms when in other positions. If not, the Reverse switch fails open.
Measure between Pin 7 (not Neutral) and Pin 3, there should be no continuity in Park or Neutral position and there
should be continuity in Forward or Reverse positions. If not, the Neutral switch failed.
NOTE: Neutral switch off indicates tractor is in Neutral. Neutral switch on indicates tractor is not in Park.
If any above switch failure is detected, replace the transmission control (FNRP) pot.
If no switch failure is detected, go to next step.
3. Check the wiring from connector C051 to the transmission controller.
Check the wiring from connector C051 to connector C351 on the transmission controller.
Follow the wiring schematics. Conduct continuity checking (in a similar way to the way specified in step 2) between
pins at each connectors.
NOTE: Pay attention to bent pin, loose pin, wire damage, and any possible shortage between pins and wires
Section 55 - Electrical System, Controller - Chapter 4
FAULT CODE TRANS 59
55-4-21