properly.
The Diagnostic ACE display is a tool to help the
user verify correct electrical functions of the
machine.
CHECKING INTERLOCK
SWITCHES
The purpose of the interlock switches are to prevent
the engine from cranking or starting unless the trac-
tion pedal is in NEUTRAL, the Enable / Disable
switch is in DISABLE and the Lower Mow / Raise
control is in the neutral position. In addition, the
engine will stop when the traction pedal is depressed
with operator off the seat.
To verify interlock switch function:
1. Park machine on a level surface, lower the cut-
ting units, stop the engine and engage the park-
ing brake.
2. Open control panel cover. Locate wire harness
and connectors near controller. Carefully
unplug loop back connector from harness con-
nector.
Figure 22
1. Wire Harness and Connectors
3. Connect the Diagnostic ACE display connector
to the harness connector. Make sure correct
overlay decal is positioned on Diagnostic ACE
display.
4. Turn the key switch to the ON position, but do
not start the machine.
Figure 23
1. Diagnostic ACE
Note: The red text on the overlay decal refers
to input switches and the green text refers to
outputs.
5. The "inputs displayed" LED, on lower right
column of the Diagnostic ACE, should be illu-
minated. If "outputs displayed" LED is illumi-
nated, press the toggle button, on Diagnostic
ACE, to change LED to "inputs displayed".
6. The Diagnostic ACE will illuminate the LED
associated with each of the inputs when that
input switch is closed.
Individually, change each of the switches from
open to closed (i.e., sit on the seat, engage the
traction pedal, etc.), and note that the appropri-
22
Operating Instructions
THE INTERLOCK SWITCHES ARE FOR THE
PROTECTION OF THE OPERATOR AND
BYSTANDERS, AND TO ENSURE CORRECT
OPERATION OF THE MA-CHINE, SO DO NOT
BYPASS OR DISCONNECT THEM. CHECK
OPERATION OF THE SWITCHES DAILY TO
ASSURE INTERLOCK SYSTEM IS OPERAT-
ING. IF A SWITCH IS DEFECTIVE, REPLACE
IT BEFORE OPERATING. THE CONTROLLER
HAS THE ABILITY TO DETECT BY-PASSED
SWITCHES AND MAY PREVENT THE OPER-
ATION OF THE MACHINE IF SWITCHES ARE
BYPASSED. DO NOT RELY ENTIRELY ON
SAFETY SWITCHES—USE COMMON SENSE!
CAUTION
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