Navistar Electrical Systems CV
Integration Guide
Page 17 of 84
Revision Date: 9/12/2019
1.
The PTO Control setting is default programmed to Interior PTO Mode.
Remote switch inputs are disabled.
2.
Since a PTO load relay is not yet wired in the system, the PTO Telltale
does not initially truly reflect the status of the PTO load. The PTO load
relay output is enabled as a factory default.
3.
When the PTO Telltale is either blinking or on solid, the PTO Relay
output will be activated.
3.6.2.
Preset PTO -
Remote Operation: Enable Conditions [requires programming with
Navistar CV vehicle service tool and installation of an appropriate remote switch
panel].
The panel must be provided by the Truck Equipment Manufacture (TEM). Please
refer to the schematics above which show how Truck Equipment Manufacture
(TEM) supplied equipment is to be wired.
1.
Cruise Control must be OFF (confirm this is OFF before powering down
the vehicle with the Ignition key).
2.
The shift lever must be in PARK [P].
3.
The park brake must be set and the hood must be closed.
4.
The engine must be stopped and the Ignition key removed. Vehicle can
be locked if desired.
5.
From the Remote Switch Panel close and open the PTO Remote Arm
Switch.
6.
Within 5 seconds open and close the PTO Remote Engine
Start/Shutdown switch
7.
The vehicle horn will chirp 3 times, and then engine starting will
automatically be initiated. The PTO system will then elevate engine rpm
to PTO standby speed and engage the PTO load relay.
8.
The PTO Remote Set switch can now be used to accomplish the PTO
Set 1 and Set 2 Engine speeds. Note: The accelerator pedal is disabled
when remote PTO operation is selected.
Notes:
1.
The PTO load relay engages immediately when the PTO operation is
initiated by the switch input. This produces a soft engagement because
the transmission torque converter is unlocked. The torque converter will
lock upon reaching stable PTO Standby Speed [default = 900 rpm] so
maximum power is available.
2.
The first elevated engine speed
–
PTO Standby Speed is not intended
as a working speed but as a verification that the system is active and
ready to go to a working speed. PTO Standby Speed can be modified to
a
‘working speed’ with a
Navistar CV vehicle service tool. The upper
limit for PTO Standby Speed is 1500 rpm.
