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Electrical Wiring Diagrams to Service Agricultural and Off-Highway Equipment: A Systematic Approach
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Abstract
This paper reviews the development of an electrical diagnostic presentation adopted for John Deere products worldwide. Deere has adopted IEC 617 electrical symbols and incorporated them into a standard presentation format to simplify and improve the communication of electrical information to dealer technicians who service John Deere equipment.
The diagnostic presentation is designed to provide the end user, the service technician, a common method for diagnosing electrical problems. It utilizes a combination of diagrams prepared by product engineering and service groups. Engineering is responsible 1) for developing a functional schematic diagram to explain the operation, function and interaction of the electrical devices, and 2) for developing a wiring diagram to show the harness flattened out with connectors and devices. Service is responsible 1) for developing a component location drawing showing the profile of the equipment and dimensional relationship between devices, and 2) for developing specific diagnostic schematics to aid in specific diagnosis instructions. All diagrams are interconnected through use of consistent labeling and identification legends between drawings.
In addition to a standardized identification code for each device, the diagram is made easier to read by adding an international symbol to help explain the function of devices and nomenclature.
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Citation
Miller, J. and Easterlund, D., "Electrical Wiring Diagrams to Service Agricultural and Off-Highway Equipment: A Systematic Approach," SAE Technical Paper 932421, 1993, https://doi.org/10.4271/932421.Also In
References
- Bosch Automotive Symbols and Circuit Diagrams, Technical Instruction Robert Bosch GmbH 1984 Postfach 50, D-7000, Stuttgart 1, Germany
- Robert Bosch GmbH 1988 Automotive Electrical/Electronic Systems Postfach 50, D-7000 Stuttgart 1 Automotive Equipment Products Group, Department for Technical Information (KH/VDT)
- IEC 617 Graphical Symbols for Diagrams
- ANSI/IEEE Std 315A-1986 Supplement to Graphic Symbols for Electrical and Electronic Diagrams
- ANSI Y32.2/1975/CSA Z99-1975/IEEE Std 315-1975 Graphic Symbols for Electrical and Electronics Diagrams
- DIN 40 719 Part 1 Circuits Terminology
- DIN 40 719 Part 2 Device Identification
- DIN 40 719 Part 4 Schematic Diagrams
- DIN 40 719 Part 6 Functional Circuit Diagrams
- DIN 40 719 Part 9 Wiring Diagrams
- SAE J1362 Symbols for Controls, Indicators, and Tell– Tales for Off –Road, Self–Propelled Work Machines