Table of Contents
Advertisement
Understanding the
Diagnostic Light
The machine is equipped with a diagnostic light which
indicates if the machine detects a malfunction. The
diagnostic light is located on the InfoCenter, above
the display screen
(Figure
functioning properly and the key switch is moved to
the On/Run position, the diagnostic light will turn on
briefly to indicate the light is working properly. When
a machine advisory message is displayed, the light
will illuminate when the message is present. When
a fault message is displayed, the light will blink until
the fault is resolved
Figure 59
1. Diagnostic light
Checking the Interlock
Switches
The purpose of the interlock switches is to prevent the
engine from cranking or starting unless the traction
pedal is in the Neutral position, the Enable/Disable
switch is in the Disable position, and the Lower
Mow/Raise control is in the Neutral position. In
addition, the engine should stop when the traction
pedal is pressed with operator off of the seat or if the
parking brake is left engaged.
CAUTION
If safety interlock switches are disconnected
or damaged the machine could operate
unexpectedly causing personal injury.
• Do not tamper with the interlock switches.
• Check the operation of the interlock
switches daily and replace any damaged
switches before operating the machine.
59). When the machine is
Verifying the Interlock Switch
Function
1.
Park the machine on a level surface, lower the
cutting units, stop the engine, and engage the
parking brake.
2.
Turn the key switch to the On position, but do
not start the machine.
3.
Locate the appropriate switch function in the
diagnostics menu on the InfoCenter.
4.
Individually, change each of the switches from
open to closed (i.e., sit on seat, engage traction
pedal, etc.), and note that the appropriate
state of the switch changes. Repeat this for all
switches that you can change by hand.
5.
If a switch is closed and the appropriate
indicator does not change, check all wiring
and connections to the switch and/or check
the switches with an ohm meter. Replace any
defective switches and repair any defective
wiring.
Note:
The InfoCenter display also has the ability to
detect which output solenoids or relays are turned
on. This is a quick way to determine if a machine
malfunction is electrical or hydraulic.
g021272
Verifying Output Function
1.
Park the machine on a level surface, lower the
cutting units, stop the engine, and engage the
parking brake.
2.
Turn the key switch to the On position and start
the machine.
3.
Locate the appropriate output function in the
diagnostics menu on the InfoCenter.
4.
Sit on the seat and attempt to operate the
desired function of the machine. The appropriate
outputs should change state to indicate that the
ECM is turning on that function.
Note:
If the correct outputs do not illuminate, verify
that the required input switches are in the necessary
positions to allow that function to occur. Verify correct
switch function.
If the output displays are on as specified, but the
machine does not function properly, this indicates a
non-electrical problem. Repair as necessary.
41
Advertisement
Table of Contents
