Class1 Throttle Information Reference - Manual (Page 8)

8 e:\manuals\throttles\LDSBBT.p65
High Idle
Engine ECM
Throttle Signal
5 VDC
GROUND Ground
Signal
+5VDC
Signal
10K POT
Vernier Throttle
manuals\throttles\genericHI.ai
+5VDC
High Idle Control
Remote Throttle
ON/OFF Control
PTO ON/OFF Switch
Remote Throttle Connections including High Idle for analog voltage signal and remote turn on
function.
If the Remote Throttle input is used for a high idle function, a potentiometer or voltage divider
must be used to set the engine RPM (ECM signal voltage input). Figure (x) shows a simple
layout for using a vernier control and a potentiometer to accomplish both a variable throttle
and a high idle function using the remote throttle functions on the ECM.
figure (x)
On some engines, the ECM performs an idle validation. In these cases a scheme must be
devised to look at the closed throttle after the remote throttle has been turned on before chang-
ing over to the high idle potentiometer. A time delay relay or a signal from the engine ECM can
be used. The delay only needs to be a few milliseconds.