Power Take-Off
8-9
Remote Engine Start Control
The PTO system allows the engine to be remotely
started while operating in the stationary PTO mode.
The wiring system provides for connections to a remote
engine start arming switch and remote start/shutdownn
switch. These connections are accessed through the
upfitter connector.
The remote start function is initiated by a sequence of
switch actions, in addition to several vehicle conditions.
The following conditions must be met before attempting
to remote start the engine. The vehicle ignition key can
be in any position or removed from the ignition:
•
The vehicle must be configured for stationary PTO
operation.
•
The parking brake must be set.
•
The transmission must be in PARK (P).
•
The hood must be closed.
Once the above conditions are met, to continue with the
remote start, use the remote PTO controls to do the
following:
1. Press and release the PTO remote arm switch.
2. Within five seconds of releasing the PTO remote
arm switch, press and release the PTO remote
engine start/shutdown switch until the engine
starts.
The PTO system will then elevate engine RPM to
standby speed and engage the PTO load. Use the PTO
remote set or PTO remote variable speed switches
(based on configuration) to elevate PTO speed to the
desired engine operating speed.
Remote Engine Shutdown Control
The PTO system allows for remote engine shutdown
while operating in the stationary PTO mode. This
feature has the following functions:
•
Engine shutdown using the operator remote
switch: The vehicle wiring system provides remote
engine shutdown switch connections, which can
be accessed through the PTO upfitter connector.
•
Timed auto-engine shutdown: The timed
auto-engine shutdown feature provides the means
to shut down the engine automatically after a
predefined time. PTO must be operational for this
function to be active.
•
Engine shutdown based on critical engine
conditions: The engine can be shutdown when
PTO is operating if a critical engine condition is
detected by the vehicle system (i.e., low oil, low oil
pressure, hot engine, hot transmission, low fuel).
•
Emergency engine shutdown: The vehicle wiring
system supports remote Emergency engine
shutdown via application of the E-STOP switch
located at the external (upfitter
’
s) panel accessible
through the PTO upfitter connector. (e.g. when
PTO relay is stuck closed in Stationary Remote
mode, operator shall activate E
—
STOP switch to
shutdown engine and allow engine to be restarted
at the next ignition cycle without PTO system
activation.
2021 - Silverado 4500HD, 5500HD, and 6500HD Electrical Body Builder Manual
