Diagnostic Light; Diagnostic Ace Display; Checking The Interlock Switches - Toro 30582 Groundsmaster 580-D Operator's Manual

5. Try to start engine. If engine starts, install left side
panel, lower hood and resume operation. If engine does
not start, repeat steps 2–5.
2
Figure 27
1. Priming pump

Diagnostic Light

The machine is equipped with a diagnostic light which
indicates if the electronic controller is functioning correctly.
The green diagnostic light is located under the control
panel (Fig. 28). When the electronic controller is
functioning correctly and the key switch is moved to the
ON position, the controller diagnostic light will be
illuminated. The light will blink if the controller detects a
malfunction in the electrical system. The light will stop
blinking and automatically reset when the key switch is
turned to the OFF position.
1
Figure 28
1. Electronic controller light
When the controller diagnostic light blinks, one of the
following outputs has been detected in the controller:
• One of the outputs has been shorted.
• One of the outputs is open circuited.
1
2. Air bleed plug
28
Using the diagnostic display, determine which output is
malfunctioning; refer to Checking the Interlock Switches,
page 28.
If the diagnostic light is not illuminated when the key
switch is in the ON position, this indicates that the
electronic controller is not operating. Possible causes are:
• Loopback is not connected.
• Fuses are blown.
• The light is burned out.
• Not functioning correctly.
• Fusible links are blown.
Check electrical connections, input fuses and diagnostic
light bulb to determine malfunction. Make sure loopback
connector is secured to wire harness connector.
Note: If the diagnostic light flashes during normal
operation of the machine, do not turn off the machine,
toggle to the output and touch any switch. The LED will
flash indicating the source of the failure.

Diagnostic ACE Display

The machine is equipped with an electronic controller
which controls most machine functions. The controller
determines what function is required for various input
switches (i.e. seat switch, key switch, etc.) and turns on the
outputs to actuate solenoids or relays for the requested
machine function.
For the electronic controller to control the machine as
desired, each of the input switches, output solenoids and
relays must be connected and functioning properly.
The Diagnostic ACE and overlay are tools to help the user
verify correct electrical functions of the machine. If you do
not have a Diagnostic ACE , contact your Authorized Toro
Distributor.
Checking the Interlock
Switches
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.
• Replace switches every two years regardless of
whether they are operating properly or not.