John Deere 331G & 333G Compact Track Loader Operation & Test Technical Manual TM14062X19 – PDF DOWNLOAD

This manual is written for an experienced technician. Essential tools required for certain service work are identified in the groups and are recommended for use. Live with safety: read the safety messages in the introduction and the cautions presented throughout the text before you connect Service ADVISOR™, crack a hydraulic fitting, or clear an exhaust-filter code.

John Deere technical manuals split into two families. Repair sections tell how to repair the components. Operation and Test sections — this file, TM14062X19 — help you identify the majority of routine failures quickly: codes, checkout, theory, diagrams, tests and adjustments. Information is organised in groups. At the beginning of each group you get summary listings of essential tools, service equipment, other materials, service-parts kits, specifications, wear tolerances and torque values. Technical manuals are concise on-the-job guides containing only the vital information needed for diagnosis, analysis, testing and repair.

Confirm the machine PIN before you buy. This TM covers 331G (1T0331G___F300253—) and 333G (1T0333G___F300253—). Earlier serials and the component Repair manual are different publications.

Why technicians keep TM14062X19 on the laptop

Complete contents — TM14062X19

Section 9000 — General Information & Safety

Group 01 opens the book the John Deere way: recognize safety information, follow instructions, operate only if qualified. The safety list is not filler. It is the first thing a dealer tech is expected to live with on a compact track loader with high-pressure hydro, DEF aftertreatment and a pressurized cab door.

• Recognize safety information and follow safety instructions
• Operate only if qualified; wear protective equipment
• Avoid unauthorized machine modifications; inspect the machine
• Stay clear of moving parts
• Avoid high-pressure fluids and high-pressure oils
• Work in a 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; clean exhaust filter safely
• Prepare for emergencies; clean debris from machine
• Add cab guarding for special uses; use steps and handholds correctly
• Start only from the operator’s seat; use and maintain the seat belt
• Prevent unintended machine movement; avoid work-site hazards
• Keep riders off the machine; avoid backover accidents
• Avoid machine tip-over; operating on slopes; operating or traveling on public roads
• Inspect and maintain ROPS; travel safely
• Prevent acid burns; add and operate attachments safely
• Park and prepare for service safely; service the cooling system safely
• Remove paint before welding or heating; make welding repairs safely; drive metal pins safely
• Service tires safely; handle cab door safely if equipped

Section 9001 — Diagnostics (DTC library by controller)

This is the largest diagnostic block in the manual. Codes are grouped by the module that sets them, so you jump from a monitor display to the right chapter instead of scrolling a single unsorted list. Where the factory book includes a diagnostic procedure under a code, that procedure is in the PDF.

Group 05 — Dosing Control Unit (DCU) codes

DEF level, temperature, quality, dosing pump, tank heater and DCU supply. Includes full diagnostic procedures for heater-valve resistance, tank temperature high and insufficient tank heating.

• 001761.01 DEF Level Very Low · 001761.03 / .04 DEF Level Circuit Fault · 001761.13 DEF Level Calibration · 001761.15 DEF Level Slightly High · 001761.18 DEF Level Moderately Low
• 003031.00 DEF Temperature Very High · 003031.02 Invalid · 003031.03 / .04 Circuit Fault · 003031.13 Calibration · 003031.15 Slightly High · 003031.17 Slightly Low
• 003515.02 DEF Sensor Value Invalid · 003515.03 / .04 Circuit Fault · 003515.13 Calibration
• 003516.00 DEF Concentration Very High · 003516.01 Very Low · 003516.03 / .04 Circuit Fault · 003516.13 Calibration · 003521.13 DEF Fluid Calibration
• 004334.03 / .04 DEF Dosing Unit Pump Circuit Fault · 004334.15 Slightly High · 004334.17 Slightly Low
• 004366.05 Tank Heater Coolant Control Valve High Resistance (procedure) · 004366.06 Low Resistance (procedure) · 004366.16 Tank Temperature Moderately High (procedure) · 004366.18 Insufficient Heating (procedure)
• 005137.00 DEF Heating Valve Very High · 005137.04 / .05 Circuit Fault · 523555.03 / .04 Heating Valve Circuit Fault
• 523560.02 Main Relay Invalid · 523560.07 Main Relay Fault
• 523581.00 Temperature Sensor Very High · 523592.00 Heater Relay Very High · 523592.03 / .04 / .05 Heater Relay Circuit Fault
• 523594.03 DEF Tank Heater Circuit Fault · 523630.02 DEF Temperature Sensor Invalid
• 523634.09 / 523635.09 DEF Sensor Communication Fault · 523640.05 DCU Supply Voltage Circuit Fault

Group 10 — Engine Control Unit (ECU) codes

• 000028.00 / .01 / .03 / .04 Service Throttle Very High / Very Low / Circuit Fault
• 000029.00 / .01 / .02 / .03 / .04 / .08 / .15 Foot Throttle Very High / Very Low / Invalid / Circuit / Signal / Slightly High
• 000091.00 / .01 / .02 / .03 / .04 / .08 / .15 Hand Throttle Very High / Very Low / Invalid / Circuit / Signal / Slightly High
• 000100.01 Oil Pressure Very Low · 000100.04 Oil Pressure Circuit Fault
• 000158.00 / .01 System Voltage Very High / Very Low · 000167.01 / .04 / .05 System Voltage Very Low / Circuit Fault
• 000237.13 Vehicle ID Calibration · 000237.31 Vehicle ID Fault
• 001202.02 ECU Invalid · 001485.02 Main Relay Invalid · 001485.07 Main Relay Circuit Fault
• 522243.02 Start Aid Invalid · 522243.03 / .04 / .05 / .06 Start Aid Circuit Fault
• 522314.00 Coolant Temperature Very High · 522323.00 Engine Air Filter Restriction Very High
• 522596.09 / 522597.09 / 522599.09 / 522600.09 / 522601.09 / 522618.09 / 522619.09 ECU Communication Fault
• 522609.09 EGR Communication Fault · 522730.08 ECU Signal Fault · 522730.12 ECU Fault · 522994.04 ECU Circuit Fault · 523513.09 DCU Communication Fault

Group 20 — Engagement and Monitor Unit (EMU) codes

• 000096.03 / .04 Fuel Level Circuit Fault · 000158.00 / .01 System Voltage Very High / Very Low
• 000162.04 2-Speed Switch Circuit Fault · 000628.12 Programming Fault
• 000920.05 / .06 Alarm Output Circuit Fault · 001196.11 Antitheft Fault · 001504.04 Seat Switch Circuit Fault
• 002000.09 ECU Communication Fault · 002142.09 SSM Communication Fault · 002228.09 HCU Communication Fault · 002251.09 SAR Communication Fault
• 003413.04 Door Switch Circuit Fault · 521050.04 Aux Flow Switch Circuit Fault · 521197.04 Courtesy Light Switch Circuit Fault
• 522379.05 / .06 Park Brake Solenoid Circuit Fault
• 522826.00 / .04 Fan Purge Switch Very High / Circuit Fault · 522827.04 Fan Auto Switch Circuit Fault
• 522828.03 / .04 / .07 Creep Mode Switch Circuit Fault / Fault · 522859.04 Lap Bar Switch Circuit Fault
• 523217.06 Hyd Valve Power 3 · 523218.06 HST Valve Power · 523219.06 Hyd Valve Power 1
• 523693.03 / .04 Aux Hydraulic In 1 Circuit Fault · 523694.03 / .04 / .12 Aux Hydraulic In 2 Circuit Fault / Fault
• 523822.04 High Flow Switch Circuit Fault · 523935.05 / .06 Aux Hyd Extend Sol · 523941.05 / .06 Aux Hyd Retract Sol
• 523948.05 / .06 Ride Control Sol 1 · 523949.05 / .06 Ride Control Sol 2
• 524225.04 Remote Start In Circuit Fault · 524264.11 Checksum Fault

Group 30 — Hydraulic Control Unit (HCU) codes

• 000630.13 Calibration Memory Calibration
• 001594.00 / .01 / .02 / .14 Left Speed In Very High / Very Low / Invalid / Fault
• 001595.00 / .01 / .02 / .14 Right Speed In Very High / Very Low / Invalid / Fault
• 002201.09 Right Joystick Communication Fault · 002213.09 Left Joystick Communication Fault
• 002660.07 Right Joystick X Fault · 002661.07 Right Joystick Y Fault · 002697.07 Left Joystick X Fault · 002698.07 Left Joystick Y Fault
• 516193.03 / .04 / .07 / .16 / .18 Left Pedal In 1 Circuit / Fault / Moderately High / Moderately Low
• 516194.03 / .04 Left Pedal In 2 · 516195.03 / .04 Right Pedal In 2 · 516196.03 / .04 / .07 / .16 / .18 Right Pedal In 1
• 516197.06 Hyd Port Lock Sol Circuit Fault
• 520652.05 / .06 Bucket Curl Sol · 520653.05 / .06 Bucket Dump Sol · 520882.13 Loader Threshold Calibration
• 522377.03 / .04 / .12 / .13 Boom Position In 1 Circuit / Fault / Calibration · 522378.03 / .04 Boom Position In 2
• 522436.03 / .04 / .12 / .13 Bucket Position In 1 Circuit / Fault / Calibration · 522437.03 / .04 Bucket Position In 2
• 522447.05 / .06 Right Pump Fwd Sol · 522448.05 / .06 Right Pump Rev Sol · 522449.05 / .06 Left Pump Rev Sol · 522450.05 / .06 Left Pump Fwd Sol
• 522507.13 Loader Angle Calibration · 523108.13 Transmission Calibration
• 523217.03 / .04 Hyd Valve Power 3 · 523218.03 / .04 HST Valve Power · 523219.03 / .04 Hyd Valve Power 1
• 523411.05 / .06 / .16 Boom Down Sol Circuit / Moderately High · 523414.05 / .06 / .16 Boom Up Sol Circuit / Moderately High

Group 40 — Left Joystick Controller (JSL) codes

• 002697.03 / .04 / .13 / .14 Left Joystick X Circuit Fault / Calibration / Fault
• 002698.03 / .04 / .13 / .14 Left Joystick Y Circuit Fault / Calibration / Fault

Group 50 — Right Joystick Controller (JSR) codes

• 002660.03 / .04 / .13 / .14 Right Joystick X Circuit Fault / Calibration / Fault
• 002661.03 / .04 / .13 / .14 Right Joystick Y Circuit Fault / Calibration / Fault

Group 60 — Sealed Switch Module (SSM) codes

• 000629.12 Control Unit Fault · 002033.09 VCU Communication Fault
• 002634.04 / .05 Ignition Relay Circuit Fault · 003997.04 / .05 Wake Up Output Circuit Fault
• SSM Buttons 1 through 15 — each with Circuit Fault and Communication Fault (523850 through 523868 family)

Group 70 — Vehicle Control Unit (VCU) codes

• 000100.03 Oil Pressure Circuit Fault · 000158.03 / .04 System Voltage Circuit Fault · 000168.03 / .04 Battery Voltage Circuit Fault · 000628.12 Programming Fault
• 000977.05 / .06 Fan Direction Sol · 001071.05 / .06 Fan Speed Sol
• 001508.00 / .03 / .04 Hydraulic Oil Temp Very High / Circuit Fault · 001713.00 / .03 Hyd Filter Switch Very High / Circuit Fault
• 003512.03 / .04 Sensor Supply 4 · 003597.03 / .04 Sensor Supply 1 · 003598.03 / .04 Sensor Supply 2 · 516249.04 Sensor Supply 1
• 004056.05 / .06 2-Speed Output Circuit Fault
• 520194.13 / .14 Vehicle ID Calibration / Fault · 520714.05 / .06 Self Level Circuit Fault
• 520849.03 / .04 Right JS Trigger Circuit Fault · 521466.05 / .06 Fan Direction Sol · 521806.05 / .06 HST Bypass Sol
• 522329.00 Water In Fuel Very High · 522820.05 / .06 High Flow Sol Circuit Fault
• 524084.00 / .03 / .04 HST Oil Temp Very High / Circuit Fault · 524264.11 Checksum Error

Group 80 — Rear Camera Display (VC1) codes

• 000629.12 Control Unit Fault · 520760.02 Camera Signal Invalid
• 516628.10 / 516629.10 / 516630.10 / 521857.10 / 521858.10 / 521859.10 Monitor Button Fault

Section 9005 — Operational Checkout Procedure

Group 10 is the first live-machine path after codes. Run it in order so a dead seat switch or an open switched-power circuit is caught before you condemn a pump.

• Diagnostic Trouble Code Check
• Operational checks — Switched Power OFF, Engine OFF
• Operational checks — Switched Power ON, Engine OFF
• Operational checks — Switched Power ON, Engine ON

Section 9010 — Engine

• Theory: John Deere engine, exhaust aftertreatment, cold-start operation
• System diagrams: engine overview, cooling-system component location, fuel-system component location, intake and exhaust component location
• Diagnostic information: engine hard to start or does not start when cold, with diagnostic procedure
• Adjustments: service filter cleaning
• Tests: fluid sampling procedure if equipped

Section 9015 — Electrical System

This is the electrical half of the O&T book: theory for every major circuit, then the master schematic and every harness W1–W44, then Service ADVISOR™ / JDLink™ / DTC reading, monitor service-mode screens, the diagnostic test box, calibrations and component tests.

Theory of operation

• Starting circuit · Controller Area Network (CAN) · Rear camera circuit
• Engine Control Unit (ECU) circuit · Exhaust aftertreatment circuit · Engagement and Monitor Unit (EMU) circuit
• Lighting circuit · Hydraulic system control circuit · Backup alarm circuit
• Quik-Tatch™ circuit if equipped · JDLink™ circuit
• Hydrostatic system control circuit · Hydraulic fan control circuit

System diagrams and harnesses

• Electrical diagram information, schematic symbols, fuse and relay specifications
• System functional schematic, component location and wiring-diagram master legend
• W1 Rear Engine harness — location and diagram
• W2 Cab harness — location and diagram
• W3 Left Main harness — location and diagram
• W4 Right Main harness — location and diagram
• W5 Dual Flasher harness · W7 JDLink™ harness · W8 Radio harness · W10 Rear Camera harness
• W11 Attachment Control Frame · W12 Attachment Control Boom
• W17 Heater and Air Conditioner · W19 Creep Mode Speed Switch
• W20 Engine Interface · W21 Engine · W22 Engine Fuel System
• W23 Pedal Interface · W25 Joystick Jumper
• W29 Diesel Exhaust Fluid (DEF) Control Valve
• W40 Quik-Tatch™ Frame · W42 Quik-Tatch™ Boom · W44 Quik-Tatch™ Actuator

Diagnostic information, monitor, test box, adjustments and tests

• Service ADVISOR™ connection · JDLink™ connection · reading DTCs · intermittent DTC diagnostics
• Monitor service mode: exhaust-filter service cleaning, set auto clean, shift mode, codes
• Diagnostics screens — switches, sensors, left joystick, right joystick, speeds, VCU / EMU / ECU outputs and power, controller info, cal values
• Antitheft master code, calibration, owner controls, anti-theft configure / enable / operate if equipped
• EMU display messages and EMU operation
• Diagnostic test box setup and functional test; two-wire and three-wire sensor circuit checks (out of range high and low)
• Hydrostatic system calibration · boom and bucket calibration · auxiliary hydraulics calibration · manual tracking adjustment · EH foot-pedal calibration
• Electrical component checks and specifications · solenoid test and observable-symptom check · alternator test · CAN circuit test and CAN diagnostics

Section 9020 — Power Train

• Power-train system operation and component location
• Loose track — diagnostic procedure
• Tight track — diagnostic procedure
• Frequent track-tension adjustment required — diagnostic procedure
• Excessive oil leakage from idlers and rollers — diagnostic procedure
• “Popping” of track — diagnostic procedure
• Individual undercarriage component wear — diagnostic procedure
• Check and adjust track tension

Section 9025 — Hydraulic System

Theory covers the base hydraulic system plus the options that show up on 331G / 333G spec sheets: high-flow pump, self-leveling valve and ride control. Symptom trees then send you to a named diagnostic procedure instead of a generic “check pressure.”

• Theory: hydraulic system operation, hydraulic oil filter manifold, high-flow pump if equipped, self-leveling valve if equipped, ride control if equipped, hydraulic pump, hydraulic fan, hydraulic control valve
• Diagrams: hydraulic system schematic and component location
• Symptoms with procedures: no hydraulic functions; boom will not raise; boom will not lower; bucket will not dump; bucket will not curl; bucket will not self-level when boom is raised; bucket dumps during self-leveling cycle; boom drifts down; boom drifts up; bucket drifts down; bucket drifts up; hydraulic functions slow or no power; functions “jerky” or “spongy”; hydraulic system noise; hydraulic oil overheats; hydraulic fan malfunctions; hydraulic fan will not reverse
• Adjustment: ride-control accumulator gas-charge procedure if equipped
• Tests: JT05800 digital thermometer install; JT02156A digital pressure and temperature analyzer install; remote start box install; hydraulic system pressure release; port-lock solenoid and spool test; system relief; charge-pressure relief; high-flow relief; circuit relief; function drift; cylinder leakage; hydraulic pump flow; charge-pump flow; fan-motor speed; fan-motor case drain; auxiliary coupler manifold leakage

Section 9026 — Hydrostatic System

• Theory: hydrostatic system operation, hydrostatic pump, charge pump, two-speed hydrostatic motor, hydrostatic control valve, park-brake system
• Diagrams: hydrostatic schematic and component location
• Symptoms with procedures: machine does not move in either direction; hydrostatic pump or motor noise; slow response to speed changes; low power; tracks powered on one side not the other; will not shift into or out of high speed; mistracking; park brakes do not hold; park brakes do not release; grinding noise while operating
• Tests: engine speed control for testing; multi-function valve pressure-relief test; hydrostatic pump flow test; hydrostatic pump mechanical-neutral adjustment; hydrostatic pump control-neutral adjustment; track speed test; park-brake release-pressure test

Section 9031 — Heating and Air Conditioning

• A/C system cycle of operation and HVAC component location
• A/C does not operate · A/C does not cool cab · A/C runs constantly / too cold
• Heating system does not operate · heating does not warm cab · interior windows continue to fog
• R134a cautions and handling, oil-charge capacity, refrigerant-charge capacity
• Heater and A/C operational checks and visual inspection
• Compressor clutch test, refrigerant leak test, hose and tubing inspection
• High/low-pressure switch test, freeze-control switch test, system test, operating-pressure diagnostic chart

Section 9900 — Dealer Fabricated Tools

• DFT1318 Motor Speed Sensor Test Harness
• DFT1325 Solenoid Power Harness

Factory section map (for techs who navigate by group)

9000 Group 01 Safety · 9001 Groups 05–80 DTC libraries · 9005 Group 10 Operational checkout · 9010 Groups 05–25 Engine · 9015 Groups 05–25 Electrical · 9020 Groups 05–20 Power train · 9025 Groups 05–25 Hydraulics · 9026 Groups 05–25 Hydrostatic · 9031 Groups 05–25 HVAC · 9900 Group 99 Dealer tools.

Who this download is for

• Dealer and independent techs running Service ADVISOR™ on a 331G or 333G after PIN F300253
• Shops chasing DEF / DCU codes, EH joystick or pedal faults, boom/bucket drift, high-flow or ride-control issues
• Field techs who need harness W-numbers, fuse/relay specs and CAN theory in the cab
• Owners who want the factory operational-checkout path before authorizing a pump or motor
• Anyone who already owns the Repair TM and needs the matching Operation & Test companion

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