Toro 74946 Software Manual
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Toro 74946 Software Manual

Toro 74946 Software Manual

Horizon control module for z master lawn mowers
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Horizon Control Module
For Z Master Lawn Mowers
Model No. 74946—Serial No. 402000000 and Up
Model No. 74947—Serial No. 40200000 and Up
Model No. 74969—Serial No. 400000000 and Up
Read this information carefully to learn how to operate and maintain your product properly and to avoid injury
and product damage. You are responsible for operating the product properly and safely. Read your Operator's
Manual for more information.
This product contains a chemical or chemicals known to the State of California
Screen Icons
The information screen uses the following icons:
Gauge and Meters
Advanced Settings
Maintenance and Service
Fuel Level
© 2017—The Toro® Company
8111 Lyndale Avenue South
Bloomington, MN 55420
Proposition 65 Warning
to cause cancer, birth defects, or reproductive harm.
Transmission Oil Maintenance
Engine-Oil Temperature
Engine Oil Maintenance
Register at www.Toro.com.
WARNING
CALIFORNIA
Low Engine Speed
Form No. 3417-740 Rev A
Software Guide
Processing
Battery Voltage
Engine Hours
Cancel/Exit
Original Instructions (EN)
All Rights Reserved *3417-740* A
Printed in the USA

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Summary of Contents for Toro 74946

  • Page 1 Form No. 3417-740 Rev A Horizon Control Module For Z Master Lawn Mowers Model No. 74946—Serial No. 402000000 and Up Model No. 74947—Serial No. 40200000 and Up Model No. 74969—Serial No. 400000000 and Up Software Guide Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage.
  • Page 2 Toggle Between Screens *Located on bottom row of some menu screens Enter/Return Parking brake Neutral Lock Previous Decrease *Located in top row of Information Screen Next Increase OPC (Operator Presence Control) Reset Play/Start Maximum Engine Speed Pause/Stop Efficient Engine Speed Error Warning Hydraulic-Fluid Temperature Shut Off Engine...

  • Page 3: Product Overview

    Product Overview LED Status Light The LED status light is multi-colored to indicate the system status and is located on the right side of the panel. During startup, the LED illuminates red, then orange, then green to verify functionality. • Solid Green: indicates normal operating activity.
  • Page 4 Engine Screens Engine Speed Mode 3 modes are available: L , and M FFICIENT AXIMUM Engine-Off Screen • : Low transport speed/Low idle for reducing deck packing in wet mowing conditions. When the key is on without the engine running, the Engine-Off screen displays (Figure •...

  • Page 5: Menu Selection Screen

    Menu Selection Screen The Menu Selection Screen displays when you place the motion-control levers in the N position EUTRAL and press and hold the 2 outside LDU buttons. g038651 Figure 6 1. Maintenance and Service 4. Cancel/Exit 2. Gauges and Meters 5.
  • Page 6 • Fuel sender voltage (shows voltage) • Neutral switch (highlights if On) • Brake switch (highlights if On) • Seat switch (highlights if On) • Oil pressure switch (highlights if On) • Engine temperature (shows temperature) g030185 Figure 9 Status of Outputs 1.
  • Page 7 Engine Oil Machine Information This service reminder screen displays the hours until The screen displays the serial number and model the engine oil maintenance is due. number of the machine. g030190 g030188 Figure 15 Figure 12 1. Machine Information 3. Serial number 1.
  • Page 8 g030193 Figure 18 g030203 Figure 20 1. Exit 3. Enter/Return 1. Reset 3. Y (yes) 2. Exit Menu 2. Are you sure? 4. N (no) Gauges and Meters Menu PTO Hours You can scroll between the following screens in the This screen displays a non-resettable, total PTO hour Gauges and Meters menu: counter and a resettable trip PTO counter.

  • Page 9: Fuel Economy

    Fuel Economy This screen displays the US gallons/liters of fuel used per engine hour. g038364 Figure 25 1. Trip Statistics 1 4. Displays US gallons/liters of fuel g038363 2. Displays engine hours 5. Play/Start Figure 23 6. Reset 3. Displays PTO hours 1.

  • Page 10: Advanced Settings Menu

    Toro Premium • Engine Oil (page 10) Hydraulic Oil. Pressing Y (yes) or N (no) determines the correct maintenance schedule.

  • Page 11: Engine Settings

    Alarms Engine Settings The alarms screen allows you to activate and This screen allows you to adjust the engine speed deactivate the audible alarm for individual errors. at the Maximum, Efficient, and Low set points for Press the Enter button to access individual error alarm both transport (clutch disengaged) and mow (clutch settings.
  • Page 12 Calibrate Engine Settings Factory Defaults This screen allows you to reset system settings back This screen allows the calibration of the actual engine to the factory default settings. Pressing the Enter speed to match the commanded engine speed. button brings up confirmation screen; press Y (yes) to The enter button blacks out if the blades are not reset or N (no) to cancel.

  • Page 13: Error Messages

    Adjusting the – Engine Error Codes: The system displays engine error codes provided by the engine Electronically-Controlled manufacturer. – Clutch Output Failure: The clutch output is Low Mode Speed open or shorted. Adjustment – System Voltage Low: The voltage is too low (less than 12.3 V).
  • Page 14 clutch, which allows the machine to be driven onto a trailer or returned to a service area. There are the following errors: Clutch Overcurrent If an overcurrent event occurs, the system limits the engine speed to the Efficient Transport Mode speed and places the machine in Safe Transport Mode.

  • Page 15: Troubleshooting

    Troubleshooting Issue Description System Error Message Status LED System Actions Recommended Corrective Action Replace the engine oil and filter. Engine oil service is Service the Engine Oil Blink Red Follow the reset procedure; refer to due. Engine Oil (page 10). Replace the transmission oil and Service the Transmission oil...
  • Page 16 System Error Message Status LED System Actions Issue Description Recommended Corrective Action Check the electrical connections at Communication the module, interconnect between Engine between the module the engine wire harness, and chassis Blink Red Communication Error and the engine ECU harness.

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7494774969

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