Mercury 225 EFI, Service Manual

Page: 189 / 719

WIRING DIAGRAMS
90-884294 OCTOBER 2001 Page 2D-39
Troll Control
BASIC OPERATION
TROLL
+
TROLL
–
TROLL
+
TROLL
–
Speedometer
Tachometer
Actual Speed
Set Speed
Actual Speed
Set Speed
TR
0
1
2
3
4
5
6
7
0
80
a
With troll control you can maintain a trolling speed of 550 to1000 rpm without using the
throttle.
NOTE: Troll control may not be available on all engine models.
NOTE: Troll control min/max range may change depending on engine type.
You can set the troll control by using either the tachometer or speedometer. Tachometer
will set the speed in RPM and speedometer will set the speed in MPH, Kph or KN.
You can shut off troll control anytime by pushing the
MODE
button when in the troll display
screen or by moving the throttle.
If you have troll control set at a desired speed and then you shut off the troll control, the system
remembers the set speed and will return to that speed when re-engaged.
The display screen will revert back to the previous screen after 10 seconds of no activity. Push
the
TROLL
+
or
TROLL
–
button to reactivate the display screen.
When the troll control is engaged and you are out of the troll control screen, a flashing signal
“TR” (a) will appear in the upper left corner of the display to indicate troll control is still running.