New Holland T8010 Manual page 1609

The Throttle Lever Potentiometer Failure
Cause:
The throttle potentiometer has failed.
(This fault code is for the tractors with electronically controlled engines only).
Possible failure modes:
1. Potentiometer shorted or open.
2. External wiring damage.
3. Loose connector, bent or partially inserted pin.
4. Controller failure.
Solution:
The throttle lever potentiometer is hard wired to the armrest controller.
1. The lever position information is broadcast over the Data Bus and can be monitored in the monitor screen of
the service tool.
2. Open the armrest controller housing and disconnect connector J208.
2. Check the wiring harness from the throttle control potentiometer to the armrest controller.
a) Check for the continuity between pin 1 and pin C, pin 2 and pin E, pin 3 and pin D. There should be good
continuity.
b) Check for wiring damage, loose connector, or bent pin.
3. Disconnect the throttle potentiometer at J208 and test its parameters:
a) Measure the continuity between pin 1 (or pin C) and pin 3 (or pin D). The resistance should be 2.5 k ohms.
b) Measure between pin 2 (pin E) and pin 1 (pin C) when moving the throttle from high to low idle. The
resistance should change continuously from below 500 ohms to about 2 k ohms.
4. Check the power supply and the ground:
a) Turn tractor key switch to the ACC position.
b) Test the switch power supply from the armrest controller at pin 1 or pin C. It should be approximately 8 volts.
c) Check continuity between pin D (or pin 3) and the clean ground cavity 11 of C137. There should be good
continuity (less than 1 Ohm).
5. If any problem is found in above tests, change the part with problems.
If no problem is found in above tests, reconnect the potentiometer to the controller and check the function
again. If the throttle function is still not working well and the fault code is recorded again, replace the armrest
controller.
NOTE: See schematic sections 46,47 and 48 on schematic poster.
Section 55 - Electrical System, Controller - Chapter 5
FAULT CODE ARM 19
55-5-4