Toro Multi Pro 1750 Service Manual page 125

6. Press the Left/back button (as indicated by the
the bottom of the screen). Select (highlight) Qualifiers
and press the Left/forward button (as indicated by the
at the bottom of the screen).
NOTE: All of the qualifiers for the machine operation
must be in the desired condition (þ) before the opera-
tion Outputs can be energized.
7. Manually operate each qualifier listed (Fig. 26). The
qualifier condition on the InfoCenter display should al-
ternate þ and ¨ as the qualifiers condition is changed.
If þ and ¨ do not alternate during qualifier operation,
the qualifier component or its circuit wiring is faulty and
should be tested (see Component Testing in this chap-
ter).
CAUTION
It may be necessary to start and run the engine or
otherwise operate the machine during the trou-
bleshooting process. Make sure the machine is
in a well ventilated area and keep away from mov-
ing parts while troubleshooting to prevent per-
sonal injury.
In the Pumps operation example, the only qualifier that
must be in the desired condition (þ) before the opera-
tion Outputs can be energized is the Throttle Home
Switch. An additional Timer qualifier appears when an
optional rinse pump kit is installed. If þ and ¨ do not al-
ternate when the qualifier condition is changed, the
qualifier or the circuit wiring for the qualifier is faulty and
should be tested as described.
8. Press the Left/back button (as indicated by the
the bottom of the screen. Select (highlight) Outputs and
press the Right/forward button (as indicated by the
at the bottom of the screen).
9. If all the Inputs are ON and all the Qualifiers are in
their desired condition (þ), the Outputs for the machine
operation should be ON. If the outputs remain OFF, the
Toro Electronic Controller (TEC) output fuses, the TEC,
or the TEC software may be damaged and require
reloading or replacement. Contact your Toro Distributor
for assistance.
Multi Pro 1750
at
DIAGNOSTICS SCREEN
(PUMPS QUALIFIERS SELECTED)
1
2
1. Qualifier items
10.If the outputs listed on the InfoCenter Display are
ON, and the operation is still malfunctioning:
S Test the specific output and output wiring (see
Component Testing in this chapter).
S Hydraulic components related to the operation (if
applicable) should be tested (see Chapter 5 − Hy-
draulic System in this manual).
In the Pumps operation example, the output is the spray
pump electric clutch. If ON appears next to the spray
pump output on the InfoCenter Display and the spray
pump fails to engage:
S Make sure the spray pump is free to rotate.
S Test the spray pump clutch (see Pump Drive
Electric Clutch in the Testing section of this chap-
ter).
An additional Rinse Pump output appears when an op-
at
tional rinse pump kit is installed. The rinse pump output
is the rinse pump relay. If ON appears next to the rinse
pump output on the InfoCenter Display and the rinse
pump fails to engage:
S Test the 30A rinse pump fuse.
S Make sure the rinse pump is free to rotate.
S Test the rinse pump motor.
S Test the rinse pump relay (see Relays with 5 Ter-
minals in the Testing section of this chapter).
Page 5 − 23
Pumps
þ
Throttle Home
Figure 26
2. Left/back button
Electrical System