New Holland T8010 Manual page 657

Section 31 - PTO - Chapter 1
PTO Control Module - The PTO control module is located under the SMV cover at the back of the cab. The PTO
control module provides the electrical current to apply the PTO clutch when instructed by the operator. All PTO
operator commands are sent to the Arm Rest Control Module (PTO switch is hard wired to the Arm Rest Control
Module), then relayed to the PTO controller via the Data Bus. The PTO controller communicates with other control
units via the Data Bus to monitor PTO clutch slip, and control modulation.
The control module incorporates a green status light which is visible to the technician. The status light flashes at a
rate of 1 cycle per second to indicate the module is operating correctly.
PTO System Fault Codes - PTO system fault codes are stored in the non-volatile memory (memory is maintained
even if the battery is disconnected) of the PTO control module for various control system faults. The engine hours
at which the fault occurred is available though the Electronic Service Tool (EST) and stored with the associated
code. A maximum of ten (10) fault codes can be stored in each controller at any time and may be retrieved in
sequence with the last code stored as the first code retrieved. PTO control system codes are displayed on the
tractor instrumentation. Refer to fault code section of this manual for complete listing of PTO fault codes.
Arm Rest Control Module - MFD and differential lock operator commands are sent to the arm rest control module
then relayed to the PTO controller via the Data Bus. The arm rest controller provides control switch position
information to the PTO controller for these functions. The PTO OFF signal is also provided to the PTO controller
from the arm rest control module. The PTO ON operator command signal is hard wired directly to the PTO
controller.
Instrumentation Cluster Control Module - PTO control system information is sent to the tractor instrumentation
and relayed to the PTO controller. Operator, diagnostic and programming information are communicated between
the PTO controller and the tractor instrumentation by way of the Data Bus. The tractor instrumentation displays
lighted icons and messages to notify the operator what PTO systems are activated.
Operational Modes - The PTO control system operates in one of four (4) modes based on operator commands
and the signals received from the other tractor systems.
Fill Mode
Modulation Mode
Ramp Mode
ON
In addition to the sequential electrical modes of operation listed above, the PTO control module conducts a
hardware reset and built-in test (BIT), and transmits PTO controller status and data on the Data Bus within a
specific time frame to ensure proper operation after start up.
31-1-6