John Deere 7220 7320 7420 7520 2WD MFWD Tractor Diagnostic & Tests Service Manual TM2047 PDF - MJODTM2047.zip
Full Diagnosis & Testing Technical Guide featuring electrical wiring schematics for the John Deere 7220, 7320, 7420 and 7520 tractors in 2WD or MFWD configurations, delivering every piece of shop data required to maintain, troubleshoot and repair these machines at a professional technician's level.
The Diagnosis & Tests service manual for the John Deere 7220, 7320, 7420 and 7520 2WD or MFWD tractors contains:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
tm2047 - 7220, 7320, 7420 and 7520 Tractors Technical Manual - Operation & Tests.pdf
PRODUCT DETAILS:
Total Pages: 6,648 pages
File Format: PDF
Language: English
MAIN SECTIONS
Foreword
SAFETY
Safety Measures
General References
DIAGNOSTIC TROUBLE CODES
ATC Diagnostic Trouble Codes
BCU Diagnostic Trouble Codes
BIF Diagnostic Trouble Codes
ECU Diagnostic Trouble Codes
EPC Diagnostic Trouble Codes
JDL Diagnostic Trouble Codes
PLC Diagnostic Trouble Codes
PRF Diagnostic Trouble Codes
SFA Diagnostic Trouble Codes
SIC Diagnostic Trouble Codes
SSU Diagnostic Trouble Codes
TCU Diagnostic Trouble Codes
TEC Diagnostic Trouble Codes
UIC Diagnostic Trouble Codes
OBSERVABLE SYMPTOMS
Engine
Electrical System
Transmission
Drive Systems
Steering and Brakes
Hydraulic System
Operator`s Cab
SYSTEM DIAGNOSTICS
Electronics
ENGINE
Additional Information
Operational Checkout
Checks and Adjustments
Theory of Operation
FUEL, AIR INTAKE AND COOLING SYSTEMS
Tests and Adjustments
Descriptions
ELECTRICAL SYSTEM
Sub-System Diagnostics
Sub-System Diagnostics (Open Operator`s Station)
Component Testing
Functional Schematics (AutoPowr / IVT Transmission)
Functional Schematics (PowrQuad-Plus Transmission)
Functional Schematics (Open Operator`s Station)
Wiring Harnesses
Wiring Harnesses from Serial No. 12451
ELECTRONIC CONTROL UNITS
General Operating Instructions and Diagnostic Information
Data Bus Systems –– Diagnostics
Data BUS Systems, Theory of Operation
ATC - Control Unit for ClimaTrak
BCU - Basic Control Unit
BIF - Basic Informator
ECU - Engine Control Unit
EPC - Control Unit for PowrQuad-Plus Transmission
JDL - Control Unit for JDLink
PLC - Park Lock Controller
PRF - Performance Monitor
SFA - Control Unit for MFWD Axle and Cab Suspension
SIC - E-SCV/E-ICV Controller
SSU - Control Unit for AutoTrac
TCU - Control Unit for AutoPowr / IVT Transmission
TEC - Tractor Equipment Controller
UIC - User Interface Controller
AutoPowr / IVT TRANSMISSION
Operational Checkout
Tests and Adjustments
Operation
PowrQuad and PowrQuad-Plus TRANSMISSIONS
Introductory Checks
Operational Checkout
Tests and Adjustments
Operation
DRIVE SYSTEMS
Operational Checks
Tests and Adjustments
Operation
STEERING AND BRAKES
Introductory Checks
Operational Checkout
Tests and Adjustments
Operation
HYDRAULIC SYSTEM
Operational Checkout
Tests and Adjustments
Theory of Operation
MFWD
Operational Checkout
Tests and Adjustments
Operation
OPERATOR`S CAB
Operational Checks
Tests and Adjustments
Theory of Operation
SPECIAL TOOLS (Dealer-Fabricated)
Special Tools (Dealer-Fabricated)
Special Tools and Test Equipment
tm2047 - 7220, 7320, 7420 and 7520 Tractors
Table of Contents
Foreword
Section 210: SAFETY
Group 05: Safety Measures
Recognize Safety Information
“Important” - Information
“Note” - Information
Prevent Machine Runaway
Avoid Harmful Asbestos Dust
Stay Clear of Rotating Drivelines
Handle Starting Fluid Safely
Handle Agricultural Chemicals Safely
Protect Against High Pressure Spray
Handle Fluids Safely—Avoid Fires
Prevent Battery Explosions
Prepare for Emergencies
Prevent Acid Burns
Avoid High-Pressure Fluids
Service Cooling System Safely
Remove Paint Before Welding or Heating
Avoid Heating Near Pressurized Fluid Lines
Work In Ventilated Area
Wear Protective Clothing
Practice Safe Maintenance
Park Machine Safely
Use Proper Lifting Equipment
Construct Dealer-Made Tools Safely
Support Machine Properly
Work in Clean Area
Illuminate Work Area Safely
Service Machines Safely
Use Proper Tools
Service Tires Safely
Service MFWD Tractor Safely
Keep ROPS Installed Properly
Replace Safety Signs
Dispose of Waste Properly
Live With Safety
Safety Measures on Electronic Control Units
Group 15: General References
Reference 210-15-001, General References—Summary
Reference 210-15-010, Unified Inch Bolt and Cap Screw Torque Values
Reference 210-15-015, Metric Bolt and Cap Screw Torque Values
Reference 210-15-020, Hydraulic System Inch Fitting Torque Values
Reference 210-15-025, Hydraulic System Metric Fitting Torque Values
Reference 210-15-030, Component Identification Table
Reference 210-15-035, How to Read a Functional Schematic
Reference 210-15-040, How to Read a Diagnostic Schematic
Reference 210-15-042, Wire Numbers and Color Codes
Reference 210-15-045, Schematic, Wiring and Harness Symbols
Reference 210-15-046, Troubleshooting Unsolved Problems
Reference 210-15-050, Visual Check of the Electrical System
Reference 210-15-055, Electrical Circuit Malfunctions
Reference 210-15-060, Seven Step Electrical Test Procedure
Reference 210-15-065, Hydraulic System — Circuit Symbols
Section 211: DIAGNOSTIC TROUBLE CODES
Group ATC: ATC Diagnostic Trouble Codes
Specifications
ATC 000170.03 - Sending Unit for Inside Air Temperature, Shorted or Open Circuit
ATC 000170.04 - Sending Unit for Inside Air Temperature, Short to Ground
ATC 000171.03 - Sending Units for Ambient Air Temperature, Shorted or Open Circuit
ATC 000171.04 - Sending Units for Ambient Temperature, Short to Ground
ATC 000628.12 - Controller, Internal Fault
ATC 000630.02 - Controller, Internal Fault
ATC 000639.14 - 29-bit CAN BUS, High Error Rate
ATC 000871.03 - Refrigerant Pressure Sending Unit, Shorted Circuit
ATC 000871.04 - Refrigerant Pressure Sending Unit, Grounded or Open Circuit
ATC 000876.03 - Air-Conditioning Relay, Shorted or Open Circuit
ATC 000876.04 - Air-Conditioning Relay, Grounded Circuit
ATC 000876.10 - Compressor Clutch Engages and Disengages Too Often
ATC 000876.14 - Compressor Switches Off Due to Engine Overheating
ATC 000919.04 - Solar Sensor Activated
ATC 000923.03 - Driver Unit for the Fan Motors, Shorted Circuit
ATC 000923.04 - Fan Motor Driver Unit, Grounded or Open Circuit
ATC 000923.12 - Fan Motors, Malfunction
ATC 001079.03 - 5-volt Power Supply, Shorted or Open Circuit
ATC 001079.04 - 5-volt Power Supply, Grounded Circuit
ATC 001546.03 - Potentiometer for Position of Water Valve, Shorted or Open Circuit
ATC 001546.04 - Potentiometer for Water Valve Position, Grounded Circuit
ATC 001547.03 - Sending Units for Evaporator Core Temperature, Shorted or Open Circuit
ATC 001547.04 - Sending Unit for Evaporator Core Temperature, Short to Ground
ATC 001548.03 - Sending Unit for Actual Outlet Air Temperature, Shorted or Open Circuit
ATC 001548.04 - Sending Unit for Actual Outlet Air Temperature, Grounded Circuit
ATC 001549.03 - Water Valve Motor, Shorted Circuit
ATC 001549.04 - Water Valve Motor, Grounded Circuit
ATC 001549.07 - Water Valve, Malfunction
ATC 001549.13 - Water Valve Not Calibrated
ATC 001552.03 - Temperature Control, Shorted or Open Circuit
ATC 001552.04 - Temperature Control, Grounded Circuit
ATC 001553.03 - Fan Speed Control, Shorted or Open Circuit
ATC 001553.04 - Fan Speed Control, Grounded Circuit
ATC 002000.09 - Engine Control Unit is not Transmitting any Data (Coolant Temperature)
ATC 523848.03 - Potentiometer for Position of Air Distribution Flaps, Shorted or Open Circuit
ATC 523848.04 - Potentiometer for Position of Air Distribution Flaps, Grounded Circuit
ATC 523848.05 - Adjusting Motor for Air Distribution, Shorted Circuit
ATC 523848.06 - Adjusting Motor for Air Distribution, Grounded Circuit
ATC 523848.07 - Air Distribution, Malfunction
ATC 523848.13 - Adjusting Motor for Air Distribution, Not Calibrated
ATC 523860.03 - Defog Sensor, Shorted or Open Circuit
ATC 523860.04 - Defog Sensor, Grounded Circuit
ATC 523860.02 - Defog Sensor, Frequency out of Valid Range
Group BCU: BCU Diagnostic Trouble Codes
Specifications
BCU 000070.31 - Handbrake Failure
BCU 000084.02 - Wheel Speed Sender, Circuit Fault
BCU 000168.16 - System Voltage Too High (Engine Running)
BCU 000168.17 - System Voltage Too Low (Idle Over 1500 rpm)
BCU 000168.18 - System Voltage Too Low (Idle Until 1500 rpm)
BCU 000186.02 - Rear PTO Speed Sender, Circuit Fault
BCU 000186.15 - Rear PTO Speed Registered After Switch-Off
BCU 000186.17 - Rear PTO Speed Not Registered
BCU 000190.02 - Engine Speed Sender, Circuit Fault
BCU 000629.12 - Control Unit, Internal Error
BCU 000639.12 - Control Unit, Internal Error
BCU 000639.13 - 29-bit CAN BUS, High Error Rate
BCU 000639.14 - 29-bit CAN BUS (Tractor BUS), Very High Error Rate
BCU 000639.19 - 29-bit CAN BUS, Very High Error Rate
BCU 000746.31 - Differential Lock Solenoid Valve, Circuit Fault
BCU 000980.07 - Rear PTO, Switch Error
BCU 001676.31 - Relay for LTC Coolant Pump, Circuit Fault
BCU 001882.02 - Front PTO Speed Sender, Circuit Fault
BCU 001882.15 - Front PTO Speed Registered After Switch-Off
BCU 001882.17 - Front PTO Speed Not Registered
BCU 001893.07 - Front PTO, Switch Error
BCU 299780.07 - Malfunction at Turn Signal Switch
BCU 302001.31 - INFORMATION FOR OPERATOR: 250-Hour Service
BCU 302002.31 - INFORMATION FOR OPERATOR: 500-Hour Service
BCU 302003.31 - INFORMATION FOR OPERATOR: 750-Hour Service
BCU 302004.31 - INFORMATION FOR OPERATOR: 1500-Hour Service
BCU 302071.31 - INFORMATION FOR OPERATOR: Turn Off the Rear PTO Switch
BCU 302073.31 - Rear PTO Solenoid, Circuit Fault
BCU 302077.31 - INFORMATION FOR OPERATOR: Sit on Seat or Turn Off the Rear PTO
BCU 302080.31 - Differential Lock, Switch Error
BCU 302082.31 - INFORMATION FOR OPERATOR: Actuate the MFWD Switch
BCU 302085.31 - MFWD, Switch Error
BCU 302086.31 - MFWD Clutch Solenoid, Circuit Fault
BCU 302087.31 - INFORMATION FOR OPERATOR: Tractor is Moving Although Handbrake is On
BCU 302088.31 - INFORMATION FOR OPERATOR: Handbrake is On and a Gear is Selected
BCU 302089.31 - INFORMATION FOR OPERATOR: Turn Off the Rear PTO Switch
BCU 302106.31 - Control Unit, Internal Error
BCU 302120.31 - Front PTO Solenoid Valve, Circuit Fault
BCU 302122.31 - Air Brake Solenoid Valve, Circuit Fault
BCU 302123.31 - Forward/Reverse Switch Signal Doesn't Match Signal of Not-Neutral Switch
BCU 302124.31 - Alternator Relay, Circuit Fault
BCU 302131.31 - Fault in Turn Signal Circuit
BCU 302132.31 - Hazard Warning Light Fuse F03/03 and/or F03/04 Defective
BCU 302133.31 - Rear PTO Preselector, Switch Error
BCU 302134.31 - HMS Program Switch Defective
BCU 302135.31 - Rear PTO Remote Control, Switch Error Left
BCU 302136.31 - Rear PTO Remote Control, Switch Error Right
BCU 302139.31 - INFORMATION FOR OPERATOR: Rear PTO can now be Switched On at the Remote Control Switch
BCU 302240.31 - Control Unit Connected to Wrong Wiring Harness Connector
BCU 303027.31 - Calibration of Hitch Control Unit Not Successful
BCU 303028.31 - Hitch Control Unit Not Calibrated
BCU 303037.03 - 5-Volt Supply Voltage Too High
BCU 303037.04 - 5-Volt Supply Voltage Too Low
BCU 303041.02 - Stepper Motor Coil 1, Open Lead
BCU 303042.02 - Stepper Motor Coil 2, Open Lead
BCU 303043.02 - Stepper Motor Coil 1, Circuit Fault
BCU 303044.02 - Stepper Motor Coil 2, Circuit Fault
BCU 303045.04 - System Voltage Too Low
BCU 303047.03 - System Voltage Too High
BCU 303049.02 - Conflicting Signals from Quick Raise/Lower Switch and Remote Switch
BCU 303049.03 - Rocker Switch for Quick Withdrawal, Signal Voltage Too High
BCU 303049.04 - Rocker Switch for Quick Withdrawal, Signal Voltage Too Low
BCU 303051.03 - Left Draft Sender, Signal Voltage Too High
BCU 303051.04 - Left Draft Sender, Signal Voltage Too Low
BCU 303052.03 - Right Draft Sender, Signal Voltage Too High
BCU 303052.04 - Right Draft Sender, Signal Voltage Too Low
BCU 303053.03 - Sensitivity Potentiometer, Signal Voltage Too High
BCU 303053.04 - Sensitivity Potentiometer, Signal Voltage Too Low
BCU 303054.03 - Hitch Height Control Potentiometer, Signal Voltage Too High
BCU 303054.04 - Hitch Height Control Potentiometer, Signal Voltage Too Low
BCU 303055.03 - Position Sender, Signal Voltage Too High
BCU 303055.04 - Position Sender, Signal Voltage Too Low
BCU 303056.03 - Raise Limit Potentiometer, Signal Voltage Too High
BCU 303056.04 - Raise Limit Potentiometer, Signal Voltage Too Low
BCU 303057.03 - Rate of Drop Potentiometer, Signal Voltage Too High
BCU 303057.04 - Rate of Drop Potentiometer, Signal Voltage Too Low
BCU 303058.02 - Remote Control Switch, Erroneous Signal
BCU 303060.02 - Stepper Motor Deadband Out of Range
BCU 303177.18 - Oil Temperature During Calibration Too Low
BCU 303251.02 - Left Draft Sender, Disrupted Signal During Calibration
BCU 303251.03 - Left Draft Sender, Signal Voltage Too High During Calibration
BCU 303251.04 - Left Draft Sender, Signal Voltage Too Low During Calibration
BCU 303252.02 - Right Draft Sender, Disrupted Signal During Calibration