Complete Operation & Test service manual with Electrical Wiring Diagrams for John Deere 4WD Loaders Model 624K with Engines 6068HDW79 (T3), 6068HDW83 (S2) (SN.642635-658064) (PIN: 1DW624KZ**C642635-658064; 1DW624KZ**D642635-658064), with all the service information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 4WD Loaders Model 624K workshop diagnosis technical 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.

TM12102 - John Deere 4WD Loaders Model 624K Technical Manual - Operation & Test.PDF
TM12102 - John Deere 4WD Loaders Model 624K Technical Manual - Operation & Test.EPUB

Total Pages: 2,118 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
Foreword
   Manual Identification-READ THIS FIRST!
   General Information
      Safety
   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 (SSM) Diagnostic Trouble Codes
      Advanced Display Unit (ADU) Diagnostic Trouble Codes
      Radar Object Detection (ROD) Diagnostic Trouble Codes
      Ground Speed Radar (RDR) Diagnostic Trouble Codes
      Joystick Steering Valve (JSV) Diagnostic Trouble Codes
      Joystick Steering Controller (JSC) Diagnostic Trouble Codes
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      Monitor Operation
      References
   Power Train
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Heating and Air Conditioning
      Theory of Operation
      Diagnostic Information
      Tests

tm12102 - 624K 4WD Loader

Table of Contents

Foreword

Manual Identification—READ THIS FIRST!

Section 9000: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Add Cab Guarding for Special Uses

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Avoid High-Pressure Oils

Work In Ventilated Area

Prevent Fires

Clean Debris from Machine

Prevent Battery Explosions

Handle Chemical Products Safely

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Prepare for Emergencies

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Avoid Work Site Hazards

Use Special Care When Operating Loader

Keep Riders Off Machine

Avoid Backover Accidents

Avoid Machine Tip Over

Operating on Slopes

Operating or Traveling On Public Roads

Inspect and Maintain ROPS

Add and Operate Attachments Safely

Park and Prepare for Service Safely

Service Cooling System Safely

Service Tires Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Section 9001: Diagnostics

Group 10: Engine Control Unit (ECU) Diagnostic Trouble Codes

Engine Control Unit (ECU) Diagnostic Trouble Codes

000107.00 - Engine Air Filter Restricted

000237.31 - Invalid VIN

000627.01 - ECU Unswitched Power Short to Ground

000676.05 - Engine Heat Open or Short

001253.13 - Injector Calibration Required

001321.31 - Starter Solenoid Open Circuit

002003.09 - CAN Communication Lost for TCU

002033.09 - CAN Communication Lost for VCU

003587.05 - Ether Starting Aid Circuit Fault

Group 20: Transmission Control Unit (TCU) Diagnostic Trouble Codes

Transmission Control Unit (TCU) Diagnostic Trouble Codes

000091.09 - Timeout EEC2 Message

000513.02 - Percent Torque Invalid

000513.09 - Timeout EEC1 Message

000514.02 - Friction Invalid

000514.09 - Timeout EEC3 Message

000544.02 - Reference Torque Invalid

000544.09 - Timeout Engine Configuration Message

000777.02 - Torque Converter Clutch Slippage

000777.03 - Torque Converter Lockup Solenoid Short to Power

000777.04 - Torque Converter Lockup Solenoid Short to Ground

000777.05 - Torque Converter Lockup Solenoid Open Circuit

000928.03 - Axle Disconnect Solenoid Short to Power

000928.04 - Axle Disconnect Solenoid High Current

000928.05 - Axle Disconnect Solenoid Open Circuit

002033.09 - Controller Area Network (CAN) Communication Lost for Vehicle Control Unit (VCU)

002141.09 - Controller Area Network (CAN) Communication Lost for Sealed Switch Module (SSM)

522344.00 - Torque Converter Overtemperature

522350.15 - Transmission Input Torque Overload

522364.07 - Transmission Clutch Calibration Failed

522364.13 - Transmission Clutch Calibration Fault

522365.13 - Limp Home Mode

522366.13 - Application Invalid

522367.13 - Transmission Control Unit (TCU) Configuration Invalid

522368.02 - Transmission Control Unit (TCU) Memory Failure

522369.03 - Remote Display Short to Power

522370.02 - Transmission Control Unit (TCU) Valve Power Supply 2 Short Circuit

522371.02 - Transmission Control Unit (TCU) Valve Power Supply 1 Short Circuit

522373.03 - Power Supply High Voltage

522373.04 - Power Supply Low Voltage

522374.03 - Sensor Supply Short to Power

522374.04 - Sensor Supply Short to Ground

522375.00 - Transmission Oil Filter Restricted

522376.00 - Transmission Oil Temperature Over Maximum Value

522379.03 - Park Brake Solenoid Short to Power

522379.04 - Park Brake Solenoid Short to Ground

522379.05 - Park Brake Solenoid Open Circuit

522382.03 - Backup Alarm Short to Power

522382.04 - Backup Alarm Short to Ground

522383.02 - Transmission Clutch KR Slippage

522383.03 - Transmission Clutch Reverse Solenoid Short to Power

522383.04 - Transmission Clutch Reverse Solenoid Short to Ground

522383.05 - Transmission Clutch Reverse Solenoid Open Circuit

522386.02 - Transmission Clutch KV Slippage

522386.03 - Transmission Clutch Forward Solenoid Short to Power

522386.04 - Transmission Clutch Forward Solenoid Short to Ground

522386.05 - Transmission Clutch Forward Solenoid Open Circuit

522389.02 - Transmission Clutch K4 Slippage

522389.03 - Transmission Clutch K4 Solenoid Short to Power

522389.04 - Transmission Clutch K4 Solenoid Short to Ground

522389.05 - Transmission Clutch K4 Solenoid Open Circuit

522392.02 - Transmission Clutch K3 Slippage

522392.03 - Transmission Clutch K3 Solenoid Short to Power

522392.04 - Transmission Clutch K3 Solenoid Short to Ground

522392.05 - Transmission Clutch K3 Solenoid Open Circuit

522395.02 - Transmission Clutch K2 Slippage

522395.03 - Transmission Clutch K2 Solenoid Short to Power

522395.04 - Transmission Clutch K2 Solenoid Short to Ground

522395.05 - Transmission Clutch K2 Solenoid Open Circuit

522399.02 - Transmission Clutch K1 Slippage

522399.03 - Transmission Clutch K1 Solenoid Short to Power

522399.04 - Transmission Clutch K1 Solenoid Short to Ground

522399.05 - Transmission Clutch K1 Solenoid Open Circuit

522401.02 - Transmission Output Shaft Speed Sensor Fault

522401.03 - Transmission Output Shaft Open or Short to Power

522401.04 - Transmission Output Shaft Short to Ground

522401.12 - Transmission Output Shaft Fault

522401.15 - Transmission Output Shaft Overspeed

522402.03 - Clutch Speed Sensor Open or Short

522402.04 - Transmission Clutch Speed Sensor Short to Ground

522402.12 - Transmission Clutch Speed Sensor Fault

522403.03 - Torque Converter Output Speed Sensor Open or Short to Power

522403.04 - Torque Converter Output Speed Sensor Short to Ground

522403.12 - Torque Converter Output Speed Sensor Fault

522404.03 - Torque Converter Input Speed Sensor Open or Short to Power

522404.04 - Torque Converter Input Speed Sensor Short to Ground

522404.12 - Torque Converter Input Speed Fault

522406.03 - Transmission Oil Temperature Sensor Open or Short to Power

522406.04 - Transmission Oil Temperature Sensor Short to Ground

522407.03 - Transmission Clutch Cut-Off Sensor Short to Power

522407.04 - Transmission Clutch Cut-Off Sensor Open or Short to Ground

522409.05 - 2nd FNR (Pilot Control Joystick FNR) Open Circuit

522409.12 - 2nd FNR (Pilot Control Joystick FNR) Multiple Inputs

522411.05 - 1st FNR Open Circuit

522411.12 - 1st FNR Multiple Inputs

522412.12 - Gear Selection Error

522419.02 - Transmission Clutch Cut-Off Disabled

522420.02 - Manual Down Shift Disabled

522421.02 - Automatic to 1st Disabled

524048.00 - Transmission Output Torque Exceeded

524049.00 - Transmission Input Torque Exceeded

524287.00 - Configure Machine Model

Group 30: Vehicle Control Unit (VCU) Diagnostic Trouble Codes

Vehicle Control Unit (VCU) Diagnostic Trouble Codes

000075.00 - Front Axle Oil High Temperature

000075.04 - Front Axle Oil Temp Sensor Short to Ground

000096.04 - Fuel Level Short to Ground

000096.05 - Fuel Level Open or Short

000167.16 - Alternator High Voltage

000167.18 - Alternator Low Voltage

000168.16 - High Battery Voltage

000234.02 - Invalid Transmission Control Unit (TCU) Software Revision

000237.31 - Invalid VIN

000444.05 - 12 V Center Tap Open or Short

000444.18 - Battery Voltage Imbalance

000521.00 - Brake Pedal High Voltage

000578.00 - Rear Axle Oil High Temperature

000578.04 - Rear Axle Oil Temp Sensor Short to Ground

000628.12 - Controller Not Programmed

000629.12 - Vehicle Control Unit (VCU) Watchdog Time Out

000639.12 - Vehicle Control Unit (VCU) Controller Area Network (CAN) Failure

000639.14 - Vehicle Control Unit (VCU) Controller Area Network (CAN) 1 Bus Off

000746.03 - Differential Lock Solenoid Short to Power

000746.05 - Differential Lock Solenoid Open

000746.06 - Differential Lock Solenoid High Current

000785.03 - Pilot Solenoid Short to Power

000785.05 - Pilot Solenoid Open or Short

000785.06 - Pilot Solenoid High Current

000880.03 - Brake Lights Short to Power

000880.05 - Brake Lights Open or Short

000880.06 - Brake Lights High Current

000977.03 - Reversing Fan Solenoid Short to Power

000977.05 - Reversing Fan Solenoid Open or Short

000977.06 - Reversing Fan Solenoid High Current

001069.02 - Tire Size Incorrect

001071.03 - Proportional Fan Solenoid High Side (HS) Short to Power

001071.05 - Proportional Fan Solenoid High Side (HS) Open or Short

001071.06 - Proportional Fan Solenoid High Side (HS) High Current

001071.13 - Proportional Fan Solenoid Out of Calibration

001071.16 - Proportional Fan Solenoid Low Side (LS) High Current

001071.17 - Proportional Fan Solenoid Low Side (LS) Open or Short

001071.18 - Proportional Fan Solenoid Low Side (LS) Short to Power

001231.12 - Vehicle Control Unit (VCU) Controller Area Network (CAN) 2 Failure

001231.14 - Vehicle Control Unit (VCU) Controller Area Network (CAN) 2 Bus Off

001503.04 - Arm Rest Down Switch Short to Ground

001503.11 - Arm Rest Position Undetermined

001550.03 - Air Conditioner Clutch Short to Power

001550.06 - Air Conditioner Clutch High Current

001565.04 - Arm Rest Up Switch Short to Ground

001638.00 - Hydraulic Oil High Temperature

001638.04 - Hydraulic Oil Temperature Sensor Short to Ground

001639.02 - Fan Speed Sensor Out of Synchronization

001639.04 - Fan Speed Sensor Short to Ground

001639.05 - Fan Speed Sensor Open Circuit

001639.08 - Fan Speed Sensor No Signal

001639.10 - Fan Speed Sensor Fault

001639.13 - Fan Speed Sensor Out of Calibration

001713.01 - Hydraulic Oil Filter Restricted

001762.03 - Hydraulic Pressure Sensor Short to Power

001762.04 - Hydraulic Pressure Sensor Open or Short

001841.03 - Blackout Brake Lights Short to Power

001841.05 - Blackout Brake Lights Open or Short

001841.06 - Blackout Brake Lights High Current

001842.03 - Blackout Lights Short to Power

001842.05 - Blackout Lights Open or Short

001842.06 - Blackout Lights High Current

002000.09 - Controller Area Network (CAN) Communication Lost for Engine Control Unit (ECU)

002003.09 - Controller Area Network (CAN) Communication Lost for Transmission Control Unit (TCU)

002033.14 - Flexpower Handshaking Error

002040.09 - Controller Area Network (CAN) Communication Lost for Advanced Displaying Unit (ADU)

002051.09 - Controller Area Network (CAN) Communication Lost for Tire Pressure Monitoring System (TPMS)

002052.09 - Controller Area Network (CAN) Communication Lost for Joystick Steering Controller (JSC)

002129.09 - Controller Area Network (CAN) Communication Lost for Joystick Steering Valve (JSV)

002132.09 - Controller Area Network (CAN) Communication Lost for Radar Object Detection (ROD)

002141.09 - Controller Area Network (CAN) Communication Lost for Sealed Switch Module (SSM)

002169.09 - Controller Area Network (CAN) Communication Lost for Ground Speed Radar (RDR)

002251.09 - Controller Area Network (CAN) Lost for JDLink™

002350.03 - Drive Lamps Short to Power

002350.05 - Drive Lamps Open or Short

002350.06 - Drive Lamps High Current

002350.18 - Drive Lamps Failure

002355.03 - Front Work Lights Short to Power

002355.05 - Front Work Lights Open or Short

002355.06 - Front Work Lights High Current

002355.18 - Front Work Lights Failure

002356.03 - Front Work Lights Short to Power

002356.05 - Front Work Lights Open or Short

002356.06 - Front Work Lights High Current

002356.18 - Front Work Lights Failure

002359.03 - Machine Work Lights Short to Power

002359.05 - Machine Work Lights Open or Short

002359.06 - Machine Work Lights High Current

002359.18 - Machine Work Lights Failure

002362.03 - Rear Work Lights Short to Power

002362.05 - Rear Work Lights Open or Short

002362.06 - Rear Work Lights High Current

002362.18 - Rear Work Lights Failure

002367.04 - Left Turn Switch Short to Ground

002368.03 - Left Turn Lights Short to Power

002368.05 - Left Turn Lights Open or Short

002368.06 - Left Turn Lights High Current

002369.04 - Right Turn Switch Short to Ground

002370.03 - Right Turn Lights Short to Power

002370.05 - Right Turn Lights Open or Short

002370.06 - Right Turn Lights High Current

002378.03 - Marker/Tail Lights Short to Power

002378.06 - Marker/Tail Lights High Current

002386.03 - Beacon Light Short to Power

002386.06 - Beacon Light High Current

002650.03 - Lockout Fan Solenoid Short to Power

002650.05 - Lockout Fan Solenoid Open or Short

002650.06 - Lockout Fan Solenoid High Current

002680.03 - Return-to-Carry (RTC)/Float Detent Short to Power

002680.05 - Return-to-Carry (RTC)/Float Detent Open or Short

002680.06 - Return-to-Carry (RTC)/Float Detent High Current

002697.02 - Timeout Joystick Steering Controller (JSC) Message

002717.03 - Return-to-Dig (RTD) Detent Short to Power

002717.05 - Return-to-Dig (RTD) Detent Open or Short

002717.06 - Return-to-Dig (RTD) Detent High Current

002754.03 - Boom Height Kickout (BHKO) Detent Short to Power

002754.05 - Boom Height Kickout (BHKO) Detent Open or Short

002754.06 - Boom Height Kickout (BHKO) Detent High Current

002873.04 - Engine Light Switch Short to Ground

002873.18 - Engine Light Switch Short to Ground

002875.04 - Hazard Wakeup Short to Ground

003509.04 - Vehicle Control Unit (VCU) Sensor 1 Voltage Low

003510.04 - Vehicle Control Unit (VCU) Sensor 2 Voltage Low

003511.04 - Vehicle Control Unit (VCU) Sensor 3 Voltage Low

003598.02 - 7 V Supply Voltage Low

299621.02 - Machine Configuration Invalid

521948.02 - Engine Tier Level Invalid

521985.04 - Central Processing Unit (CPU) Switched Power Voltage Low

521986.04 - Unswitched Power Voltage Low

522280.01 - Brake Pressure Low

522341.03 - Heated Mirror Short to Power

522341.05 - Heated Mirror Open Circuit

522341.06 - Heated Mirror High Current

522426.04 - Rear Wiper Park Short to Ground

522427.04 - Front Wiper Park Short to Ground

522431.02 - Memory Test Failure

522432.03 - Rear Wiper High Speed Shorted to Power

522432.05 - Rear Wiper High Speed Open Circuit

522432.06 - Rear Wiper High Speed High Current

522433.03 - Rear Wiper Low Speed Short to Power

522433.05 - Rear Wiper Low Speed Open Circuit

522433.06 - Rear Wiper Low Speed High Current

522434.03 - Front Wiper Low Speed Short to Power

522434.05 - Front Wiper Low Speed Open Circuit

522434.06 - Front Wiper Low Speed High Current

522435.03 - Front Wiper High Speed Short to Power

522435.05 - Front Wiper High Speed Open Circuit

522435.06 - Front Wiper High Speed High Current

522436.03 - Bucket Position Short to Power

522436.04 - Bucket Position Open or Short

522437.04 - Return-to-Dig (RTD) Switch Short to Ground

522438.03 - Pin Disconnect Solenoid Short to Power

522438.05 - Pin Disconnect Solenoid Open or Short

522438.06 - Pin Disconnect Solenoid High Current

522543.03 - Boom Cylinder Rod Pressure Sensor Open or Short

522543.04 - Boom Cylinder Rod Pressure Sensor Short to Ground

522544.03 - Boom Cylinder Head Pressure Sensor Open or Short

522544.04 - Boom Cylinder Head Pressure Sensor Short to Ground

522620.03 - Vehicle Horn Short to Power

522620.06 - Vehicle Horn High Current

522796.03 - Rear Washer Pump Short to Power

522796.05 - Rear Washer Pump Open or Short

522796.06 - Rear Washer Pump High Current

522797.03 - Front Washer Pump Short to Power

522797.05 - Front Washer Pump Open or Short

522797.06 - Front Washer Pump High Current

523137.01 - Steering System Pressure Low

523137.03 - Steering Pressure Sensor Short to Power

523137.04 - Steering Pressure Sensor Short to Ground

523137.05 - Steering Pressure Sensor Open Circuit

523137.12 - Steering Pressure Sensor Invalid

523219.04 - Switched Power Voltage Low

523440.04 - Unswitched Power Voltage Low

523489.03 - Engine Light Short to Power

523489.05 - Engine Light Open Circuit

523489.06 - Engine Light Short to Ground

523577.03 - Secondary Steering Pump Shorted to Power

523577.05 - Secondary Steering Pump Open or Short Circuit

523577.06 - Secondary Steering Pump High Current

523689.04 - Differential Lock Switch Short to Ground

523767.04 - Joystick Steering Activation Switch Short to Ground

523767.10 - Joystick Steering Activation Switch Button Stuck

523786.02 - Boom Position Sensor Failure

523786.03 - Boom Position Sensor Short to Power

523786.06 - Boom Position Sensor Short to Ground

523786.13 - Boom Position Sensor Out of Calibration

523795.03 - Joystick Steering Valve (JSV) Power Short to Power

523795.05 - Joystick Steering Valve (JSV) Power Open or Short

523795.06 - Joystick Steering Valve (JSV) High Current

523837.01 - Brake Pressure Low—Rear

523837.03 - Rear Brake Pressure Sensor Short to Power

523837.04 - Rear Brake Pressure Open or Short

523840.01 - Brake Pressure Low—Front

523840.03 - Front Brake Pressure Sensor Short to Power

523840.04 - Front Brake Pressure Sensor Open or Short

523865.04 - Add Truck Switch Short to Ground

523867.04 - Counter Switch Short to Ground

523868.04 - Add Bucket Switch Short to Ground

523948.03 - Ride Control Solenoid Short to Power

523948.05 - Ride Control Solenoid Open Circuit

523948.06 - Ride Control Solenoid High Current

524044.01 - Axle Oil Filter Restricted

524044.03 - Axle Oil Filter Short to Power

524250.31 - Inspect Park Brake

524265.19 - Checksum Error

Group 40: Sealed Switch Module (SSM) Diagnostic Trouble Codes

Sealed Switch Module (SSM) Diagnostic Trouble Codes

000629.12 - Sealed Switch Module (SSM) Watchdog Time Out

002033.09 - Controller Area Network (CAN) Communication Lost For Vehicle Control Unit (VCU)

002634.04 - Sealed Switch Module (SSM) Ignition Relay Signal Short to Ground

002634.05 - Sealed Switch Module (SSM) Ignition Relay Signal Open Circuit

520752.04 - Button 17 Keypad Stuck

520752.09 - Button 17 Light-Emitting Diode (LED) Message

520753.04 - Front Washer Keypad Stuck

520754.04 - Front Wiper Keypad Stuck

520754.09 - Lost Front Wiper Light-Emitting Diode (LED) Message

520755.04 - Drive Lights Keypad Stuck

520755.09 - Lost Drive Lights Light-Emitting Diode (LED) Message

523335.04 - Work Lights Keypad Stuck

523335.09 - Lost Work Lights Light-Emitting Diode (LED) Message

523336.04 - Rear Wiper Keypad Stuck

523336.09 - Lost Rear Wiper Light-Emitting Diode (LED) Message

523338.04 - Rear Washer Keypad Stuck

523339.04 - Axle Disconnect Keypad Stuck

523339.09 - Lost Axle Disconnect Light-Emitting Diode (LED) Message

523340.04 - Button 21 Keypad Stuck

523340.09 - Button 21 Light-Emitting Diode (LED) Message

523849.04 - Air Conditioner Keypad Stuck

523349.09 - Lost Air Conditioner Light-Emitting Diode (LED) Message

523850.04 - Pin Disconnect Keypad Stuck

523850.09 - Lost Pin Disconnect Light-Emitting Diode (LED) Message

523852.04 - Spin Control Keypad Stuck

523852.09 - Lost Spin Control Light-Emitting Diode (LED) Message

523854.04 - Differential Lock Keypad Stuck

523854.09 - Lost Differential Lock Light-Emitting Diode (LED) Message

523855.04 - Return To Carry Keypad Stuck

523855.09 - Lost Return To Carry Light-Emitting Diode (LED) Message

523856.04 - Boom Height Kick Out Keypad Stuck

523856.09 - Lost Boom Height Kick Out Light-Emitting Diode (LED) Message

523857.04 - Clutch Cut-Off Keypad Stuck

523857.09 - Lost Clutch Cut-Off Light-Emitting Diode (LED) Message

523858.04 - Ride Control Keypad Stuck

523858.09 - Lost Ride Control Light-Emitting Diode (LED) Message

523860.04 - Auto Transmission Keypad Stuck

523860.09 - Lost Auto Transmission Light-Emitting Diode (LED) Message

523861.04 - Return To Dig Keypad Stuck

523861.09 - Lost Return To Dig Light-Emitting Diode (LED) Message

523862.04 - Park Brake Keypad Stuck

523862.09 - Lost Park Brake Light-Emitting Diode (LED) Message

523863.04 - Pilot Enable Keypad Stuck

523863.09 - Lost Pilot Enable Light-Emitting Diode (LED) Message

523864.04 - Hazards Keypad Stuck

523864.09 - Lost Hazard Light-Emitting Diode (LED) Message

523865.04 - Beacon Light Keypad Stuck

523865.09 - Lost Beacon Light-Emitting Diode (LED) Message

523867.04 - Ignition Off Keypad Stuck

523868.04 - Ignition On Keypad Stuck

523868.09 - Lost Ignition On Light-Emitting Diode (LED) Message

Group 50: Advanced Display Unit (ADU) Diagnostic Trouble Codes

Advanced Display Unit (ADU) Diagnostic Trouble Codes

000158.03 - Switched Power Voltage High

000158.04 - Switched Power Voltage Low

000168.03 - High Battery Voltage

000168.04 - Low Battery Voltage

000442.00 - Display Temp High

000442.01 - Display Temp Low

001491.11 - LCD Backlight Failure

003597.02 - 5 Volt Power Supply Invalid

003598.02 - 1.5 Volt Power Supply Invalid

003599.02 - 3.3 Volt Power Supply Invalid

523436.14 - ADU Watchdog Time Out

523438.31 - Memory Error

523651.02 - Memory Stack Overflow

523773.03 - CAN HIGH Voltage High

523773.04 - CAN HIGH Voltage Low

523774.03 - CAN LOW Voltage High

523774.04 - CAN LOW Voltage Low

524076.10 - Information Button Stuck

524077.10 - Back Key Button Stuck

524078.10 - Menu Select Button Stuck

524080.10 - Down Arrow Button Stuck

524082.10 - Up Arrow Button Stuck

Group 60: Radar Object Detection (ROD) Diagnostic Trouble Codes

Radar Object Detection (ROD) Diagnostic Trouble Codes

000896.12 - ROD Unit Failure

Group 70: Ground Speed Radar (RDR) Diagnostic Trouble Codes

Ground Speed Radar (RDR) Diagnostic Trouble Codes

000628.12 - Controller Not Programmed

523456.18 - Degraded Mode

Group 80: Joystick Steering Valve (JSV) Diagnostic Trouble Codes

Joystick Steering Valve (JSV) Diagnostic Trouble Codes

000627.03 - Supply High Voltage

000627.04 - Supply Voltage Low

000628.12 - Memory Error

000630.12 - Memory Error

000638.12 - Memory Error

298965.12 - Control ASIC

298970.02 - Invalid Option

298971.02 - Invalid Valve State

298972.02 - Invalid Valve State

298973.02 - Port Flow Greater Than 100%

298974.02 - Port Flow Error Float

298975.02 - Port Flow Error Block

298976.02 - Invert Port Error

298977.02 - Shape Error

298978.02 - Invalid Slope Command

298979.02 - Dead Band Error

298980.02 - Invalid Float Command

298981.02 - Invalid Ramps Command

298982.02 - Invalid Scale Command

298983.02 - Flow Command Error

298984.02 - CAN ID Invalid

298985.19 - CAN Communication Lost For VCU

298986.07 - Spool Fail Float Position

298987.07 - Spool Position Wrong Direction

298988.07 - Spool Position Greater Than Reference

298989.07 - Spool Not at Neutral

298990.07 - Spool Float Position Error

298991.07 - Main Spool Stuck

298992.11 - Self Test Failure

298993.11 - Component Failure

298994.11 - Memory Error

298994.12 - LVDT Wiring Error

298995.11 - Memory Test Failure

298998.13 - Invalid Mechanical Spool Values

298999.13 - Memory Error

299001.12 - Memory Error

299002.11 - Software Error

299003.11 - Software Error

299004.11 - Software Error

299006.12 - Software Error

299007.12 - Memory Test Failure

Group 90: Joystick Steering Controller (JSC) Diagnostic Trouble Codes

Joystick Steering Controller (JSC) Diagnostic Trouble Codes

002697.03 - Joystick Position Sensor Voltage Above Normal

002697.04 - Joystick Position Sensor Voltage Below Normal

002697.13 - Joystick Out of Calibration

002697.14 - Joystick Redundant Sensor Failure

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

John Deere Engine

Cold Start Aid System Theory of Operation

Group 15: Diagnostic Information

John Deere Engine

Engine Cranks/Will Not Start

Engine Misfires/Runs Irregularly

Engine Does Not Develop Full Power

Engine Emits Excessive White Exhaust Smoke

Engine Emits Excessive Black or Gray Exhaust Smoke

Engine Will Not Crank

Engine Idles Poorly

Abnormal Engine Noise

Low Pressure Fuel System Check

Excessive Fuel Consumption

Fuel in Oil

Engine Cooling System Component Location

Engine Fuel System Component Location

Engine Intake and Exhaust Component Location

Group 25: Tests

John Deere Engine

Fluid Sampling Procedure—If Equipped

Engine Idle Speeds and Auto Shutdown Check

Engine Low Idle Speed Adjustment

Intake Manifold Pressure Test—Turbocharger Boost

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Electrical Schematic Symbols

Group 10: System Diagrams

Fuse and Relay Specifications

System Functional Schematic, Wiring Diagram, and Component Location Master Legend

System Functional Schematic

Power and Ground Cables (W1) Component Location

Loader Frame Harness (W2) Component Location

Loader Frame Harness (W2) Wiring Diagram

Load Center Harness (W3) Component Location

Load Center Harness (W3) Wiring Diagram

Front Console Harness (W4) Component Location

Front Console Harness (W4) Wiring Diagram

Engine Frame Harness (W5) Component Location

Engine Frame Harness (W5) Wiring Diagram

Engine Harness (W6) Component Location

Engine Harness (W6) Wiring Diagram

Low Pressure Fuel Pump Harness (W7) Component Location

Low Pressure Fuel Pump Harness (W7) Wiring Diagram

Beacon Light Harness (W8) Component Location

Beacon Light Harness (W8) Wiring Diagram—If Equipped

Glow Plug Harness (W9) Component Location—If Equipped

Glow Plug Harness (W9) Wiring Diagram—If Equipped

Transmission Harness (W10) Component Location

Transmission Harness (W10) Wiring Diagram

Rear Frame Harness (W13) Component Location

Rear Frame Harness (W13) Wiring Diagram

License Plate Light and Backup Light Harness (W14) Component Location—If Equipped

License Plate Light and Backup Light Harness (W14) Wiring Diagram

Secondary Steering Harness (W17) Component Location

Secondary Steering Harness (W17) Wiring Diagram—If Equipped

Cab Roof Harness (W19) Component Location

Cab Roof Harness (W19) Wiring Diagram

Heater and Air Conditioner Harness (W20) Component Location

Heater and Air Conditioner Harness (W20) Wiring Diagram

Radar Object Detection Harness (W21) Component Location—If Equipped

Radar Object Detection Harness (W21) Wiring Diagram

Joystick Steering Harness (W22) Component Location

Joystick Steering Harness (W22) Wiring Diagram—If Equipped

Radio Harness (W23) Component Location

Radio Harness (W23) Wiring Diagram

Vehicle Control Unit (VCU) Power Cable (W42) Component Location

Vehicle Control Unit (VCU) Power Cable (W42) Wiring Diagram

Modular Telematics Gateway (MTG) and Satellite (SAT) Harness (W6002 and W6003) Component Location—If Equipped

Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram—If Equipped

Satellite (SAT) Harness (W6003) Wiring Diagram—If Equipped

Group 15: Sub-System Diagnostics

Start and Charge Circuits Theory of Operation

Controller Area Network (CAN) Circuit Theory of Operation

Engine Control Unit (ECU) Circuit Theory of Operation

Vehicle Control Unit (VCU) Circuit Theory of Operation

Transmission Control Unit (TCU) Circuit Theory of Operation

Park Brake Circuit Theory of Operation

Advanced Display Unit (ADU) Circuit Theory of Operation

Joystick Steering Circuit Theory of Operation

Radar Object Detection (ROD) Circuit Theory of Operation

Auto-Differential Lock Circuit Theory of Operation

Embedded Payload Scale (EPS) Circuit Theory of Operation

JDLink™ Circuit Theory of Operation

Group 16: Monitor Operation

Advanced Display Unit (ADU)—Service Mode

Advanced Display Unit (ADU)—Clear Codes

Advanced Display Unit (ADU)—Auto Idle

Advanced Display Unit (ADU)—Auto Shutdown

Advanced Display Unit (ADU)—Enable Options

Advanced Display Unit (ADU)—Tire Size

Advanced Display Unit (ADU)—Fan Speed

Advanced Display Unit (ADU)—Maximum High Gear

Advanced Display Unit (ADU)—Transmission Clutch Calibration

Advanced Display Unit (ADU)—Slow Idle Adjust

Advanced Display Unit (ADU)—Hide-Unhide Main Menu

Group 20: References

Electrical Component Specifications

Service ADVISOR™ Diagnostic Application

Service ADVISOR™ Connection Procedure

Reading Diagnostic Trouble Codes with Service ADVISOR™ Diagnostic Application

Diagnostic Trouble Codes—After Machine Repair

JDLink™ Connection Procedure

CAN Circuit Test

Alternator Test

Hydraulic Pressure Sensor Test

Transmission Control Valve Solenoid Check

Clutch Cut-Off Sensor Check

Boom Height Kickout (BHKO) Adjustment

Return-to-Carry (RTC) Adjustment

Return-to-Dig (RTD) Adjustment—Z-Bar Linkage

Return-to-Dig (RTD) Adjustment—Powerllel Linkage

Return-to-Dig (RTD) Adjustment—Tool Carrier Linkage

Boom Height Kickout/Return-to-Carry (BHKO/RTC) Position Sensor Remove and Install

Boom Height Kickout/Return-to-Carry (BHKO/RTC) Position Sensor Disassemble and Assemble

Boom Height Kickout/Return-to-Carry (BHKO/RTC) Position Sensor Calibration

Embedded Payload Scale (EPS) Diagnostics

Change Backup Alarm Volume

Air Conditioner Freeze Control Switch Remove and Install

Air Conditioner High/Low-Pressure Switch Remove and Install

Pressure Switches and Sensors Remove and Install

Intermittent Diagnostic Trouble Code (DTC) Diagnostics

Connector Terminal Test

Replace Metri-Pack® (Push Type) Connectors

Replace Metri-Pack® Connectors

Replace DEUTSCH® Circular Connectors

Replace DEUTSCH® Rectangular or Triangular Connectors

Install DEUTSCH® Contact

Replace WEATHER PACK® Connector

Install WEATHER PACK® Contact

Replace CINCH™ Connectors

Install CINCH™ Contact

Repair 32 and 48 Way CINCH™ Connectors

Remove Connector Body from Blade Terminals

Section 9020: Power Train

Group 05: Theory of Operation

TeamMate™ Axles

Power Train Operation

Torque Converter Operation

Transmission Operation

Transmission Operation—First Gear Forward

Transmission Clutch Pack Engagement and Solenoids Activated

Transmission Filter Bypass Valve Operation

Transmission Control Valve Component Operation

Transmission Clutch Modulation Operation

Thermal Bypass Valve Operation

Standard Differential Operation

Differential Lock Operation

Axle Circulation Dual Pump Operation

Park Brake Operation

Group 15: Diagnostic Information

Transmission System Schematic—First Forward

Power Train Component Location

Transmission Clutch Slippage

Machine Will Not Move in Either Direction

Machine Will Not Shift Correctly

Transmission System Pressure Is Low in Neutral

Transmission Pressure Is Low (One or Two Gear Ranges)

Transmission Shifts Too Slow

Transmission Shifts Too Fast

Machine Creeps in Neutral

Transmission Hydraulic System Overheats

Transmission Excessive Noise

Oil Aerated

Oil Ejected from Filler Tube

Machine Vibrates

Machine Power and Acceleration Low

Torque Converter Stall RPM

Differential Lock Will Not Engage

Differential Lock Slips and Chatters

Differential Lock Will Not Disengage

Differential Oil Level Rises

Differential Oil Level Low

Differential and Axle Noise Excessive

Axle Wheel Hub Face Seal Leaking

Axle Overheats

Service Brakes Poor or Do Not Apply

Service Brakes Aggressive

Service Brakes Dragging

Service Brakes Lock up

Service Brakes Chatter

Service Brake Warning Light On

Driveline Excessive Vibration or Noise

Park Brake Will Not Hold

Park Brake Will Not Release

Park Brake Overheats

Park Brake Light Flashes When Shifting From Forward to Reverse

Park Brake Light Flashes During Each Shift

Park Brake Light Does Not Come On

Park Brake Will Not Apply

Group 20: Adjustments

Service Brake Bleeding Procedure

External Service Brake Inspection

Transmission Control Unit (TCU)—Electronic Clutch Calibration

Group 25: Tests

Transmission Oil Sampling Procedure

Transmission Oil Warm-Up Procedure

Park Brake Pressure Test

Park Brake Drag Test

Transmission Pump Flow Test

Transmission System Pressure Test

Transmission Clutch Pressure Test

Transmission Element Leakage Test

Transmission Lube Pressure Test

Torque Converter—In Pressure Test

Torque Converter—Out Pressure Test

Torque Converter Relief Pressure Test

Torque Converter—Out Flow Test

Torque Converter Stall Speed Test

Transmission Oil Cooler Thermal Bypass Valve Temperature Test

Transmission Oil Cooler Thermal Bypass Valve Pressure Test

Transmission Oil Cooler Restriction Test

Axle Circulation Pump Flow Test

Axle Breather Test

Differential Lock Pressure Test

Section 9025: Hydraulic System

Group 05: Theory of Operation

Loader Hydraulic System Operation

Main Hydraulic Pump Operation

Hydraulic Pump Manifold Operation

Hydraulic Fan Operation

Hydraulic Reversing Fan Operation

Orbital Steering System Component Operation

Orbital Steering Valve Operation

Joystick Steering Valve Operation

Secondary Steering System Operation—If Equipped

Secondary Steering Valve Operation

Pilot Pressure Reducing Valve Operation

Service Brake Hydraulic System Operation

Service Brake Accumulator Operation

Service Brake Valve Operation

Pin Disconnect Operation

Pilot Control Lever Operation

Control Valve Pilot Orifice Check Valve Operation

Loader Control Valve Operation

Boom Section Operation—Boom Down and Steering

Bucket Section Operation—Boom Raise and Bucket Dump

Bucket Section Operation—Boom Raise and Bucket Dump (High-Lift Option)

Auxiliary Section—Operating and Boom Raise

Auxiliary Section—Spool Stroke Adjuster Operation

Loader Control Valve—Outlet Section Operation

Load Sense Circuit Operation—Neutral

Load Sense Circuit Operation—Steering

Load Sense Circuit Operation—Steering and Boom Down

Load Sense Circuit Operation—Boom Raise and Bucket Dump

Main Relief Valve Operation

Load Sense Relief Valve Operation

Circuit Relief With Anticavitation Valve Operation

Anticavitation Valve Operation

Hydraulic Return Filter Operation

Ride Control Operation—If Equipped

Group 15: Diagnostic Information

Hydraulic System Schematic

Steering and Hydraulic Cooling Fan Circuit Component Location

Steering and Hydraulic Cooling Fan Circuit Line Identification

Loader and Hydraulic Cooling Circuit Component Location

Loader and Hydraulic Cooling Circuit Line Identification

Ride Control, Pin Disconnect, and Hydraulic Filter Circuit Component Location

Ride Control, Pin Disconnect, and Hydraulic Filter Circuit Line Identification

Service Brake, Park Brake, Differential Lock, and Axle Cooling Circuit Component Location

Service Brake, Park Brake, Differential Lock, and Axle Cooling Circuit Line Identification

Hydraulic Pump Manifold (Hydraulic System Component Location)

No Hydraulic Functions

Hydraulic Functions Slow

Main Hydraulic Pump Noisy

No Orbital Steering Function

Boom Float Function Not Working

One Hydraulic Function Not Working

Hydraulic Function Drifts Down

Boom Down Does Not Work (Engine Off)

Ride Control Not Working

Oil Overheats

Hydraulic Oil Foams

Pin Disconnect Cylinders Will Not Retract

Constant Steering Required to Maintain Straight Travel

Slow Steering Wheel Movement Will Not Cause Frame Movement

Steering Wheel Turns Without Resistance and Causes No Frame Movement

Steering Erratic

Steering Wheel Free Play

Orbital Steering Valve Binds or Locks Up

Steering Wheel Turns by Itself

Machine Turns in Opposite Direction as Steering Wheel

Steering Wheel Kickback

Orbital Steering Jerky

No Joystick Steering Function

Secondary Steering Motor Will Not Operate

Secondary Steering Pump Runs But Will Not Steer Machine

Hydraulic Fan Does Not Reach Full Speed

Hydraulic Fan Runs at Full Speed Only

Hydraulic Fan Does Not Spin

Hydraulic Fan Will Not Reverse Direction

Group 20: Adjustments

Pilot Control Lever Adjustment

Auxiliary Pilot Control Lever Adjustment

Ride Control Accumulator Gas Charge Procedure

Ride Control Accumulator Draining Procedure

Auxiliary Valve Section—Stroke Adjustment

Group 25: Tests

Hydraulic Oil Sampling Procedure

Hydraulic Oil Warm-Up Procedure

Vacuum Pump Installation

Hydraulic System Pressure and Accumulators Discharge

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

Hydraulic System Operating and Standby Pressure Test

Main Hydraulic Pump Control Valve Test and Adjustment

Load Sense Relief Valve Pressure Test and Adjustment

Main Hydraulic Pump Flow Test

Main Hydraulic Pump Case Drain Test

Main Relief Valve Pressure Test

Circuit Relief With Anticavitation Valve Pressure Test

Loader Cylinder Drift Test

Boom, Bucket, and Steering Cylinder Leakage Test

Hydraulic Oil Cooler Restriction Test

Steering Cylinder Drift Test

Joystick Steering Valve Pressure Test—If Equipped

Joystick Steering Circuit Relief Valve Pressure Test

Secondary Steering Pump Pressure Relief Valve Test

Secondary Steering Valve—Hydraulic System Isolation Check Valve Leakage Test

Secondary Steering Valve—Secondary Steering Pump Isolation Check Valve Leakage Test—If Equipped

Pilot Control Valve Pressure Test

Auxiliary Pilot Control Valve Pressure Test

Pilot Pressure Reducing Valve Pressure Test

Pilot Accumulator Gas Precharge Test

Cycle Time Test

Service Brake Accumulator Gas Precharge and Low Brake Pressure Warning Test

Service Brake Valve Pressure Test

Service Brake Valve Leakage Test

Service Brake Accumulator Inlet Check Valve Leakage Test

Pin Disconnect Pressure Test

Hydraulic Fan Pump Pressure Test

Hydraulic Fan Motor Speed Test

Hydraulic Fan Pump Flow Test

Hydraulic Fan Motor Case Drain Test

Hydraulic Reversing Fan Test—If Equipped

Hydraulic Oil Filter Inspection Procedure

Section 9031: Heating and Air Conditioning

Group 05: Theory of Operation

Air Conditioning System Cycle of Operation

Group 15: Diagnostic Information

Air Conditioner and Heater Component Location

Air Conditioning System Does Not Operate

Air Conditioner Does Not Cool Interior of Cab

Air Conditioner Runs Constantly, Too Cold

Heating System Does Not Operate

Heater Does Not Warm Interior of Cab

Interior Windows Continue to Fog

Group 25: Tests

Refrigerant Cautions and Proper Handling

R134a Oil Charge Capacity

R134a Refrigerant Charge Capacity

Refrigerant Hoses and Tubing Inspection

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

Air Conditioner High/Low Pressure Switch Test

Freeze Control Switch Test

Refrigerant Leak Testing

John Deere 4WD Loaders Model 624K Operation & Test Service Manual (TM12102)