John Deere 944K Hybrid 4WD Loader Operation and Test Service Manual TM13094X19 (SN E669456) - MJODTM13094X19.zip
John Deere 4WD Loaders 944K Hybrid Operation and Test Service Manual (TM13094X19)
TM13094X19 — Technical Manual for the John Deere 944K Hybrid 4WD Loader (serial number E669456 and later). Repair documentation supplied as a PDF file.
Complete Diagnosis and Test Service manual with Electrical Wiring Diagrams for John Deere 4WD Loaders 944K Hybrid (SN. from E669456) (PIN: 1DW944KX**E669456—), with technical information to maintain, diagnose, service rebuild like professional mechanics.
John Deere 944K Hybrid Loaders 4WD workshop Operation and Test Service manual includes:
* 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.
Total Pages: 3,163 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)
Language: English
MAIN SECTIONS
Foreword
Manual Identification-READ THIS FIRST!
General Information
Safety Information
Diagnostics
Engine Control Unit (ECU) Diagnostic Trouble Codes
Transmission Control Unit (TCU) Diagnostic Trouble Codes
Vehicle Control Unit (VCU) Diagnostic Trouble Codes
Sealed Switch Module (OC3) Diagnostic Trouble Codes
Rear Object Detection (ROD) Diagnostic Trouble Codes
Tire Pressure Monitoring (TPM) Diagnostic Trouble Codes
Motor Inverter (MT1) Diagnostic Trouble Codes
Motor Inverter (MT2) Diagnostic Trouble Codes
Motor Inverter (MT3) Diagnostic Trouble Codes
Motor Inverter (MT4) Diagnostic Trouble Codes
Generator Inverter (GN1) Diagnostic Trouble Codes
Generator Inverter (GN2) Diagnostic Trouble Codes
Bucket Lever Controller (RJ1) Diagnostic Trouble Codes
Boom Lever Controller (RJ2) Diagnostic Trouble Codes
Primary Display Unit (PDU) Diagnostic Trouble Codes
Operational Checkout Procedure
Operational Checkout Procedure
Engine
Theory of Operation
System Diagrams
Diagnostic Information
Adjustments
Tests
Electrical System
Theory of Operation
System Diagrams
Diagnostic Information
Monitor Operation
Diagnostic Test Box
Adjustments
Tests
Electric Drive System
Theory of Operation
System Diagrams
Diagnostic Information
Adjustments
Tests
Power Train
Theory of Operation
System Diagrams
Diagnostic Information
Adjustments
Tests
Pneumatic System
Theory of Operation
System Diagrams
Diagnostic Information
Tests
Hydraulic System
Theory of Operation
System Diagrams
Diagnostic Information
Adjustments
Tests
Heating and Air Conditioning
Theory of Operation
System Diagrams
Diagnostic Information
Tests
tm13094x19 - 944K Hybrid 4WD Loader
Table of Contents
Foreword
Manual Identification—READ THIS FIRST!
Section 9000: General Information
Group 01: Safety Information
Recognize Safety Information
Follow Safety Instructions
Operate Only If Qualified
Wear Protective Equipment
Avoid Unauthorized Machine Modifications
Inspect Machine
Stay Clear of Moving Parts
Avoid High-Pressure Fluids
Avoid High-Pressure Oils
Work In Ventilated Area
Avoid Static Electricity Risk When Refueling
Prevent Fires
In Case of Machine Fire
Prevent Battery Explosions
Handle Chemical Products Safely
Handle Starting Fluid Safely
Decommissioning — Proper Recycling and Disposal of Fluids and Components
Exhaust Filter Ash Handling and Disposal
Prepare for Emergencies
Clean Debris from Machine
Add Cab Guarding for Special Uses
Use Steps and Handholds Correctly
Start Only From Operator's Seat
Use and Maintain Seat Belt
Prevent Unintended Machine Movement
Avoid Work Site Hazards
Keep Riders Off Machine
Avoid Backover Accidents
Avoid Machine Tip Over
Operating on Slopes
Operating or Traveling On Public Roads
Use Special Care When Operating Loader
Inspect and Maintain ROPS
Keep the Operator Protective Structure (OPS) in Place
Travel Safely
Prevent Acid Burns
Add and Operate Attachments Safely
High-Altitude Operation
Park and Prepare for Service Safely
Prepare Electric Drive System for Service Safely
Avoid Pressure Washing Electric Drive Components
Service Cooling System Safely
Remove Paint Before Welding or Heating
Make Welding Repairs Safely
Drive Metal Pins Safely
Service Tires Safely
Clean Exhaust Filter Safely
Section 9001: Diagnostics
Group 10: Engine Control Unit (ECU) Diagnostic Trouble Codes
Engine Control Unit (ECU) Diagnostic Trouble Codes
000237.02 - Vehicle Identification Conflict
000237.13 - Vehicle Identification Fault
000237.31 - Communication Fault
001321.09 - Starter Signal Invalid
002795.31 - Turbocharger Actuator Fault
003353.31 - Alternator Output Fault
003510.03 - Sensor Supply 2 Circuit Fault
003510.04 - Sensor Supply 2 Circuit Fault
003511.03 - Sensor Supply 3 Circuit Fault
003511.04 - Sensor Supply 3 Circuit Fault
003587.05 - Ether Starting Aid Circuit Fault
003587.06 - Ether Starting Aid Circuit Fault
003711.14 - Exhaust Filter Inlet Temperature Low
003711.31 - Exhaust Filter Inlet Temperature Low
003719.14 - Exhaust Filter Extremely Restricted
004766.15 - DOC Outlet Temperature Very High
520629.31 - Engine Control Unit Programming Fault
Group 20: Transmission Control Unit (TCU) Diagnostic Trouble Codes
Transmission Control Unit (TCU) Diagnostic Trouble Codes
000177.00 - Gearbox Oil Temp Overtemp
000237.02 - Invalid VIN
000237.14 - VIN Options Not Learned
000237.31 - VIN Message Missing
000521.03 - Brake Pedal Short to Power
000521.04 - Brake Pedal Short to Ground
000578.00 - Axle Oil Temp Overtemp
000628.12 - Controller Not Programmed
000629.12 - Controller Reset
000639.12 - Communication System
000639.14 - Communication System
000880.03 - Brake Lights Short to Power
000880.05 - Brake Lights Open Circuit
000880.06 - Brake Lights Short to Ground
001231.12 - Communication System
001231.14 - Communication System
001235.12 - Communication System
001235.14 - Communication System
001503.11 - Armrest Position Undetermined
002000.09 - CAN Comm Lost For ECU
002033.09 - CAN Comm Lost For VCU
002160.09 - CAN Comm Lost For GN1
002161.09 - CAN Comm Lost For GN2
002162.09 - CAN Comm Lost For MT1
002163.09 - CAN Comm Lost For MT2
002164.09 - CAN Comm Lost For MT3
002165.09 - CAN Comm Lost For MT4
002873.04 - Engine Light Switch On Short to Ground
002873.18 - Engine Light Switch Off Short to Ground
003655.04 - Shift Up Button Short to Ground
003656.04 - Shift Down Button Short to Ground
516641.03 - Park Brake Valve Short to Power
516641.05 - Park Brake Valve Open Circuit
516641.06 - Park Brake Valve Short to Ground
516642.03 - Park Brake Valve Short to Power
516642.05 - Park Brake Valve Open Circuit
516642.06 - Park Brake Valve Short to Ground
516643.03 - Park Brake Valve Short to Power
516643.05 - Park Brake Valve Open Circuit
516643.06 - Park Brake Valve Short to Ground
516644.03 - Park Brake Valve Short to Power
516644.05 - Park Brake Valve Open Circuit
516644.06 - Park Brake Valve Short to Ground
516681.02 - Ref Torque Invalid
516682.02 - Ref Torque Invalid
520351.00 - GN1 IGBT Temp Overtemp
520537.04 - Quick Shift Short to Ground
520539.04 - FNR - R Short to Ground
520540.04 - FNR - F Short to Ground
520555.03 - Accel Pedal Short to Power
520555.04 - Accel Pedal Short to Ground
521041.00 - Generator Winding Temp Overtemp
521043.00 - Brake Res Temp Overtemp
521248.03 - Rear Park Brake Pressure Short to Power
521248.04 - Rear Park Brake Pressure Short to Ground
521256.03 - Front Park Brake Pressure Short to Power
521256.04 - Front Park Brake Pressure Short to Ground
521487.01 - DC Bus B Severe Isolation
521487.09 - DC Bus B Isolation Failure
521487.18 - DC Bus B Moderate Isolation
521839.01 - DC Bus A Severe Isolation
521839.09 - DC Bus A Isolation Failure
521839.18 - DC Bus A Moderate Isolation
521900.03 - Articulation Angle Sensor Short to Power
521900.04 - Articulation Angle Sensor Short to Ground
521900.13 - Articulation Angle Sensor Out of Calibration
521932.00 - MT1 IGBT Temp Overtemp
522003.04 - FNR - NR Short to Ground
522327.00 - Motor Winding Temp Overtemp
522382.03 - Backup Alarm Failure
522382.05 - Backup Alarm Open Circuit
522382.06 - Backup Alarm Short to Ground
522401.15 - Maximum Machine Speed Exceeded
522409.04 - FNR - NF Short to Ground
522409.05 - FNR Open Circuit
522409.12 - FNR Mult Inputs
522410.12 - Park Brake Pressure Mismatch
523380.31 - Drivetrain Temp Derate Active
523440.04 - Unswitched Power Low Voltage
523489.03 - Engine Compartment Light Short to Power
523489.05 - Engine Compartment Light Open Circuit
523489.06 - Engine Compartment Light Short to Ground
523837.01 - Rear Service Brake Pressure Low
523837.03 - Rear Service Brake Short to Power
523837.04 - Rear Service Brake Short to Ground
523840.01 - Front Service Brake Pressure Low
523840.03 - Front Service Brake Short to Power
523840.04 - Front Service Brake Open Circuit
523952.31 - Traction Control Disabled
524099.02 - WP1 Operation Fault
Group 30: Vehicle Control Unit (VCU) Diagnostic Trouble Codes
Vehicle Control Unit (VCU) Diagnostic Trouble Codes
000096.04 - Fuel Level Sensor Short to Ground
000096.05 - Fuel Level Sensor Open or Short to Power
000127.04 - Gearbox Oil Pressure Short to Ground
000127.06 - Gearbox Oil Pressure Low Pressure
000167.16 - Alternator High Voltage
000167.18 - Alternator Low Voltage
000168.16 - High Battery Voltage
000168.18 - Low Battery Voltage
000171.04 - Ambient Air Sensor Short to Ground
000177.00 - Gearbox Oil Temperature High
000177.04 - Gearbox Oil Temp Sensor Short to Ground
000177.05 - Gearbox Oil Temp Sensor Open Circuit
000237.02 - Vehicle Identification Fault
000237.14 - VIN Options Not Learned
000237.31 - VIN Message Missing
000578.00 - MT4 Axle Oil Temperature High
000578.04 - MT4 Axle Oil Temp Sensor Short to Ground
000578.05 - MT4 Axle Oil Temp Sensor Open Circuit
000628.12 - Controller Not Programmed
000629.12 - Controller Reset
000639.12 - Communication System
000639.14 - Communication System
000785.03 - Pilot Solenoid Short to Power
000785.05 - Pilot Solenoid Open Circuit
000785.06 - Pilot Solenoid Short to Ground
000920.03 - Audible Alarm Sensor Short to Power
000920.05 - Audible Alarm Sensor Open Circuit
000920.06 - Audible Alarm Sensor Short to Ground
000977.03 - Reverse Fan Solenoid Short to Power
000977.05 - Reverse Fan Solenoid Open Circuit
000977.06 - Reverse Fan Solenoid Short to Ground
001071.03 - Fan Solenoid Short to Power
001071.05 - Fan Solenoid Open Circuit
001071.06 - Fan Solenoid Short to Ground
001071.16 - Fan Solenoid Low Side Short to Ground
001071.18 - Fan Solenoid Low Side Short to Power
001093.04 - MT1 Oil Pressure Short to Ground
001093.06 - Axle Cooling System Low Pressure MT1
001094.04 - MT2 Oil Pressure Short to Ground
001094.06 - Axle Cooling System Low Pressure MT2
001095.04 - MT3 Oil Pressure Short to Ground
001095.06 - Axle Cooling System Low Pressure MT3
001096.04 - MT4 Oil Pressure Short to Ground
001096.06 - Axle Cooling System Low Pressure MT4
001231.12 - Communication System
001231.14 - Communication System
001529.04 - Ride Control Accumulator Short to Ground
001529.06 - Ride Control Accumulator Short to Power
001550.03 - AC Clutch Driver Short to Power
001550.06 - AC Clutch Driver Short to Ground
001638.00 - Hydraulic Oil Temperature High
001638.04 - Hydraulic Oil Temp Sensor Short to Ground
001638.05 - Hydraulic Oil Temp Sensor Open Circuit