Understanding The Diagnostic Light - Toro Reelmaster 3555 Operator's Manual

the engine does not start, air may be trapped between
the injection pump and injectors; refer to
from the Injectors (page
Understanding the
Diagnostic Light
The machine is equipped with a diagnostic light
that indicates if the electronic controller senses an
electronic malfunction. The diagnostic light is located
on the control panel (Figure
controller is functioning correctly and you move the
key switch to the O position, the controller diagnostic
N
light turns on for 3 seconds and turn off to indicate
that the light is working properly. If the engine shuts
off, then the light turns on steady until the you change
key position. The light blinks if the controller detects a
malfunction in the electrical system. The light stops
blinking and automatically resets when you turn the
key switch to the O position once the fault has been
FF
resolved.
1. Diagnostic light
When the controller diagnostic light blinks, 1 of
the following problems has been detected by the
controller:
•
An output has been shorted.
•
An output is open circuited.
Using the diagnostic display, determine which output
is malfunctioning; refer to
Switches (page 31).
If the diagnostic light is not illuminated when the key
switch is in the O position, this indicates that the
N
electronic controller is not operating. Possible causes
are as follows:
•
The loop-back is not connected.
•
The light is burned out.
•
Fuses are blown.
•
It is not functioning correctly.
Bleeding Air
42).
39). When the electronic
Figure 39
Checking the Interlock
Check the electrical connections, input fuses, and
diagnostic light bulb to determine the malfunction.
Ensure that the loop-back connector is secured to
the wire harness connector.
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