Fault Memory And Retrieval; Hydraulic Solenoid Valve Functions - Toro 03806 Operator's Manual

required input switches are in the necessary
positions to allow that function to occur. Verify
correct switch function.
If the output LEDs are on as specified, but the
machine does not function properly, this indicates a
non-electrical problem. Repair as necessary.
Note: Due to electrical system constraints,
the output LED's for "Start", "Preheat" and
"ETR/ALT" may not blink even though an
electrical problem may exist for those functions. If
the machine problem appears to be with one of
these functions, be certain to check the electrical
circuit with a volt/ohm meter to verify that no
electrical problem exists to these functions.
If each input switch is in the correct position
and functioning correctly, but the output LEDs
are not correctly illuminated, this indicates an
ECU problem. If this occurs, contact your Toro
Distributor for assistance.

Fault Memory and Retrieval

If the Controller senses a fault on one of the output
solenoids, it will flash the machines diagnostic Lamp
(Reel Diagnostic Lamp on console or Green Diagnostic
Lamp under console) and store the fault into the
Controllers (ECU) memory. The fault can then be
retrieved and viewed with the Diagnostic ACE hand
held tool or a lap top/PC at anytime. The Controller
will store one (1) fault at a time and will not store
another different fault until the first fault is cleared.
Retrieving Fault Information
Retrieving Stored Faults (Do not sit in seat)
1. Rotate ignition key to Off position.
2. Connect the Hand held Diagnostic Tool to the
desired Controller Loopback Connector (use the
proper overlay).
3. Move the Joystick to the Raise position and hold.
4. Rotate ignition key to On position, and continue to
hold the Joystick in Raise position until the top left
Diagnostic Tool light comes on (approx. 2 seconds).
5. Release the Joystick to the center position.
6. Hand held Tool will now playback the fault retained
in the Controller memory.
Important: The display will show eight (8)
individual records with the fault displayed on
the 8th record. Each record will be displayed
for 10 seconds. Be sure to have the Diagnostic
Tool display on Outputs to see fault. The
Problem circuit will be flashing. Records will
repeat until key is turned off. Unit will not start
in this mode.
Clearing the Fault Memory (Diagnostic Tool
not required)
7. Rotate ignition key to Off position.
8. Turn Backlap Switch to the Front or Rear Backlap
position.
9. Turn the Reel Control Switch to Enable position.
10. Move the Joystick to the Raise position and hold.
11. Turn the ignition key to On, and continue to hold
the Joystick in the Raise position until the Reel
Control Lamp starts to flash (approx. 2 seconds).
12. Release the Joystick and turn the Key Off. Memory
is now cleared.
13. Turn the Backlap Switch to Off and Enable Switch
to Disable position.
Important: The Diagnostic ACE display must
not be left connected to the machine. It is
not designed to withstand the environment
of the machine's every day use. When done
using Diagnostic ACE, disconnect it from the
machine and reconnect loopback connector to
harness connector. Machine will not operate
without loopback connector installed on
harness. Store Diagnostic ACE in dry, secure
location in shop, not on machine.
Hydraulic Solenoid Valve
Functions
Use the list below to identify and describe the different
functions of the solenoids in the hydraulic manifold.
Each solenoid must be energized to allow function to
occur.
Solenoid
MSV1
MSV2
SV4
SV3
SV5
SV1
SV2
SV 6
33
Function
Front reel circuit
Rear reel circuit
Lift front wing cutting units
Lift front center cutting unit
Lift rear cutting units
Pressurize raise/lower
hydraulic circuit
Direction: ON=Raise,
OFF= Lower
Left rear wing cutting unit