Aux/Hitch/Pto Fault Code 19; Aux/Hitch/Pto Fault Code 21 - New Holland T8010 Manual

Upper Limit Potentiometer Failure
Cause:
The Data Bus signaled that the upper limit potentiometer has failed.
The hitch controller received the signal from the armrest controller.
Possible failure modes:
1. The upper limit potentiometer failed in the armrest controller (in most cases).
2. Software execution error in the armrest controller (small chance).
Solution:
The upper limit potentiometer is hard wired to the armrest controller. If the upper limit potentiometer fails in the
armrest controller, the fault code ARM 149 should exist.
1. Check for fault code ARM 149 at the armrest controller. If ARM 149 exists, follow the corresponding corrective
action.
2. Check the function the armrest controller.
NOTE: See schematic sections 47 and 48 on the schematic poster.
Load Command Potentiometer Failure
Cause:
The Data Bus signaled that the load command potentiometer has failed.
The hitch controller received the signal from the armrest controller.
Possible failure modes:
1. Load command potentiometer in armrest controller (in most cases).
2. Software execution error in the armrest controller (small chance).
Solution:
The load command potentiometer is hard wired to the armrest controller. If the load command potentiometer fails in
the armrest controller, the fault code ARM 79 should exist.
1. Check for fault code ARM 79 at the armrest controller. If ARM 79 exists, follow the corresponding corrective
action.
2. Check the function of the armrest controller.
NOTE: See schematic section 45 on the schematic poster.
Section 55 - Electrical System, Controller - Chapter 3

AUX/HITCH/PTO FAULT CODE 19

AUX/HITCH/PTO FAULT CODE 21

55-3-18