John Deere S760, S770, S780, S785 and S790 Combines (MY2020-MY2021; SN. from 810001) Diagnostic Manual (TM153419)

Table of Contents:
   Introduction
      Foreword
   General
      Safety
      Combine and Component Identification
      General Specifications
      Diagnostic and Testing Procedures
   Diagnostic Trouble Codes
      Accessing Diagnostic Codes and Addresses
      AIC - Diagnostic Trouble Codes
      ATC - Diagnostic Trouble Codes
      AYM - Diagnostic Trouble Codes
      CAB - Diagnostic Trouble Codes
      CLC - Diagnostic Trouble Codes
      CRU - Diagnostic Trouble Codes
      CSM - Diagnostic Trouble Codes
      ECU - T2, T3 and iT4 Engines - Diagnostic Trouble Codes
      ECU Final Tier 4 - 9.0L Diagnostic Trouble Codes
      ECU Final Tier 4 - 13.5L Diagnostic Trouble Codes
      EIC - Diagnostic Trouble Codes
      GLM - Diagnostic Trouble Codes
      GQM - Diagnostic Trouble Codes
      GR6 - Diagnostic Trouble Codes
      HCU - HD Model Headers on S-Series
      HIM - Diagnostic Trouble Codes
      IR6 - Diagnostic Trouble Codes
      JDL - Diagnostic Trouble Codes
      LC1 - Diagnostic Trouble Codes
      LC1 - BP Model Headers on S-Series
      LC1 - C-F, C-R Model Headers on S-Series
      LC1 - RD-F Model Headers on S-Series
      LC1 - (700X-Wide Feed) Model Header on S-Series
      LC2 - Diagnostic Trouble Codes
      MHC - Diagnostic Trouble Codes
      MSC - Diagnostic Trouble Codes
      OIC - Diagnostic Trouble Codes
      PDU - Diagnostic Trouble Codes
      PTP - Diagnostic Trouble Codes
      RC1 - Diagnostic Trouble Codes
      RC2 - Diagnostic Trouble Codes
      SCL - Diagnostic Trouble Codes
      SSU - Diagnostic Trouble Codes
      VTi - Diagnostic Trouble Codes
      VTV - Diagnostic Trouble Codes
      XMC - Diagnostic Trouble Codes
      XSC - Diagnostic Trouble Codes
   Observable Symptoms
      Fuel, Air Intake, Exhaust, and Cooling Systems
      Electrical System
      Electrical Control Units
      Drives - ( S760, S770)
      Drives - (S780, S785, S790)
      Steering and Brakes - ( S760, S770)
      Steering and Brakes - (S780, S785, S790)
      Hydraulic System - (S760, S770)
      Hydraulic System - (S780, S785, S790)
      Corn Head Hydraulics - (600C, 700C - Rigid Frame)
      Folding Corn Head Hydraulics - (600FC, 700FC)
      Flex Draper Hydraulics - (600FD, 700FD)
      Flex Cutterbar Auger Header Hydraulics - (600F)
      Rigid Draper Header Hydraulics - (600D, 700D)
      Belt Pickup Header Hydraulics - (615P)
      Extendable Table Header Hydraulics - (600X - 700X)
      Rigid Auger Header Hydraulics - (600R)
      Main Gear Case - (S760, S770)
      Main Gear Case - (S780, S785, S790)
      Cab/Open Operator Station
   Engine System
      Engine Systems
   Fuel, Air Intake, Exhaust, and Cooling Systems
      Theory of Operation
      Schematics
      Diagnostics
   Air Intake and Cooling System - Components
      Air Intake and Cooling System - Components - Summary of References
      Air Intake and Cooling System - A Components
      Air Intake and Cooling System - D Components
      Air Intake and Cooling System - F Components
      Air Intake and Cooling System - H Components
      Air Intake and Cooling System - P Components
      Air Intake and Cooling System - R Components
      Air Intake and Cooling System - S Components
      Air Intake and Cooling System - V Components
      Air Intake and Cooling System - X Components
      Air Intake and Cooling System - Y Components
   Electrical System
      General Information
      Calibration Procedures
      Theory of Operation - Cab/Operator`s Station
      Theory of Operation - CAN Bus/Local Link Systems
      Theory of Operation - Ag Management Solutions
      Theory of Operation - Lighting
      Theory of Operation - Engine/Fuel
      Theory of Operation - Starting/Charging/Power Distribution
      Theory of Operation - Header Functions - Model Year 20 Headers and Older
      Theory of Operation - Header Functions - Model Year 21 Headers and Newer
      Theory of Operation - Feeder House
      Theory of Operation - Threshing/Separating/Cleaning
      Theory of Operation - Grain Tank/Unloading
      Theory of Operation - Residue System
      Theory of Operation - Transmission/Ground Drive Systems
      Theory of Operation - Hydraulic Oil/Air Compressor
      Theory of Operation - Main Gearcase
      Theory of Operation - Brakes
      Theory of Operation - Chassis
      Schematics - Cab/Operators Station
      Schematics - CAN Bus/Local Link Systems
      Schematics - Ag Management Solutions
      Schematics - Lighting
      Schematics - Engine/Fuel
      Schematics - Starting/Charging/Power Distribution
      Schematics - Header Functions - Model Year 20 Headers and Older
      Schematics - Header Functions - Model Year 21 Headers and Newer
      Schematics - Feeder House
      Schematics - Threshing/Separating/Cleaning
      Schematics - Grain Tank/Unloading
      Schematics - Residue System
      Schematics - Transmission/Ground Drive Systems
      Schematics - Hydraulic Oil/Air Compressor
      Schematics - Main Gear Case
      Schematics - Brakes
      Schematics - Chassis
      Diagnostics - Cab/Operator`s Station
      Diagnostics - CAN Bus/Local Link Systems
      Diagnostics - Ag Management Solutions
      Diagnostics - Lighting
      Diagnostics - Engine/Fuel
      Diagnostics - Starting/Charging/Power Distribution
      Diagnostics - Header Functions - Model Year 20 Headers and Older
      Diagnostics - Header Functions - Model Year 21 Headers and Newer
      Diagnostics - Feeder House
      Diagnostics - Threshing/Separating/Cleaning
      Diagnostics - Grain Tank/Unloading
      Diagnostics - Residue System
      Diagnostics - Transmission/Ground Drive Systems
      Diagnostics - Hydraulic Oil/Pressure
      Diagnostics - Main Gear Case
      Diagnostics - Brakes
      Diagnostics - Chassis
   Electrical Control Units
      General Information
      Accessing Diagnostic Trouble Codes and Addresses
      Theory of Operation
      Schematics
      Diagnostics
      AIC - Diagnostic Addresses
      ATC - Diagnostic Addresses
      AYM - Diagnostic Addresses
      CAB - Diagnostic Addresses
      CLC - Diagnostic Addresses
      CRU - Diagnostic Addresses
      CSM - Diagnostic Addresses
      ECU - Diagnostic Addresses
      EIC - Diagnostic Addresses
      GLM - Diagnostic Addresses
      GQM - Diagnostic Addresses
      GR6 - Diagnostic Addresses
      HCU - Data Identifiers (DID)
      HIM - Diagnostic Addresses
      IR6 - Diagnostic Addresses
      JDL - Diagnostic Addresses
      LC1 - Diagnostic Addresses
      LC1 - Data Identifiers (DID)
      LC2 - Diagnostic Addresses
      MHC - Diagnostic Addresses
      MSC - Diagnostic Addresses
      OIC - Diagnostic Addresses
      PDU - Diagnostic Addresses
      PTP - Diagnostic Addresses
      RC1 - Diagnostic Addresses
      RC2 - Diagnostic Addresses
      SSU - Diagnostic Addresses
      VTi - Diagnostic Addresses
      VTv - Diagnostic Addresses
      XMC - Diagnostic Addresses
      XSC - Diagnostic Addresses
   Electrical Connector/Components
      Electrical Connector/Components - Summary of References
      General Information
      XA - Electrical Assemblies
      XB - Sensors
      XE - Lights
      XF - Fuses
      XG - Charging
      XH - Monitoring Devices
      XK - Relays
      XM - Motors
      XR - Resistors
      XS - Switches
      XD - Diodes
      XX/GND - Interconnects and Ground Points
      XY - Electronically Actuated Mechanical Devices
      Header Model BP- Connectors
      Header Model RD-F - Connectors
      Header Model C-F, C-R - Connectors
      Header Model HD - Connectors
      Header Model (700X-Wide Feed) - Connectors
   Drives - (S760, S770)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Drives - (S780, S785, S790)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Drives - Components
      Drives - Components - Summary of References
   Steering and Brakes - (S760, S770)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Steering and Brakes - (S780, S785, S790)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Steering and Brakes - Components
      Steering and Brakes - Components - Summary of References
   Hydraulic System - (S760, S770)
      Preliminary and Operational Checks
      Hydraulic Specification
      Theory of Operation
      Schematics
      Diagnostics
   Hydraulic System - (S780, S785, S790)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Corn Head Hydraulics - (600C, 700C - Rigid Frame)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Folding Corn Head Hydraulics - (600FC, 700FC)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Flex Draper Header Hydraulics - (600FD, 700FD)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Flex Cutterbar Auger Header Hydraulics - (600F)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Rigid Draper Header Hydraulics - (600D, 700D)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Belt Pickup Header Hydraulics - (615P)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Extendable Table Header Hydraulics - (600X, 700X)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   Rigid Auger Head Hydraulics - (600R)
      Preliminary and Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   (C-R) Rigid Corn Header
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   (C-F) Folding Corn Header
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   (RD-F) Rigid Draper-Flex Knife
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   (BP15) Belt Pick-Up Header
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - (S760, S770)
      Theory of Operation - (S780, S785, S790)
      Schematics - (S760, S770)
      Schematics - (S780, S785, S790)
      Diagnostics - (S760, S770)
      Diagnostics - (S780, S785, S790)
   (700X Wide Feed) Extendable Table Header
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - S760, S770
      Theory of Operation - S780, S785, S790
      Schematics - S760, S770
      Schematics - S780, S785, S790
      Diagnostics - S760, S770
      Diagnostics - S780, S785, S790
   (HD-Series) Hinged Draper
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation - S760, S770
      Theory of Operation - S780, S785, S790
      Schematics - S760, S770
      Schematics - S780, S785, S790
      Diagnostics - S760, S770
      Diagnostics - S780, S785, S790
   Hydraulic - Components
      Hydraulic - Components - Summary of References
      Accumulator
      Sensor or Gauge
      Cylinder, Actuator, or Piston
      Check Valve
      Filter
      Valve Block, Assembly, or Gear Case
      Cooler
      Motor
      Orifice
      Pump
      Reservoir or Tank
      Switch
      Valve
      Mechanical Assembly
      Diagnostic Receptacle or Coupler
      Solenoid Valve
   Main Gear Case - (S760, S770)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Main Gear Case (S780, S785, S790)
      Preliminary & Operational Checks
      Hydraulic Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Main Gear Case - Components
      Main Gearcase - Components - Summary of References
   Cab/Open Operator`s Station
      Specifications
      Theory of Operation
      Schematics
      Diagnostics
   Cab/Open Operator`s Station - Components
      Components - Summary of Reference
      Cab/Open Operator Station Components
   Tools
      General Information
      Diagnostic Trouble Code - Test Equipment
      Electrical Systems - Test Equipment
      Hydraulic Systems - Test Equipment
      Cab/Operator Station - Test Equipment
      Section 250A
      Section 250B
      Section 260A
      Section 260B
      Section 270A
      Section 270B
      Section 270C
      Section 270D
      Section 270E
      Section 270F
      Section 270G
      Section 270H
      Section 270I
      Section 270J
      Section 270K
      Section 270L
      Section 270M
      Section 270N
      Section 270O
      Section 270P
      Section 280A
      Section 280B