John Deere PowerTech 10.5 L & 12.5 L Diesel Engines Lucas Electronic Fuel Systems With Lucas EUIs Index:

• Contents
  • General Information
    • Safety
      • Handle Fluids Safely—Avoid Fires
      • Handle Starting Fluid Safely
      • Service Cooling System Safely
      • Prevent Battery Explosions
      • Prepare for Emergencies
      • Handling Batteries Safely
      • Avoid High-Pressure Fluids
      • Wear Protective Clothing
      • Service Machines Safely
      • Work In Ventilated Area
      • Work in Clean Area
      • Remove Paint Before Welding or Heating
      • Avoid Heating Near Pressurized Fluid Lines
      • Illuminate Work Area Safely
      • Practice Safe Maintenance
      • Use Proper Tools
      • Dispose of Waste Properly
      • Live With Safety
    • Engine Identification
      • Engine Model Designation
      • Engine Serial Number Plate Information
      • Engine Option Code Label
      • Engine Application Chart
      • Distinguishing ECUs
    • Fuels
      • Lubricants and Coolant
      • Diesel Fuel
      • Bio-Diesel Fuel
      • Lubricity of Diesel Fuel
      • Dieselscan Fuel Analysis
  • Repair and Adjustments
    • Electronic Fuel System Repair and Adjustment
      • Fuel System Components
      • Replace Final (Secondary) Fuel Filter Element
      • Replacing Primary Fuel Filter/Water Separator
      • Remove and Install Air Purge Valve
      • Remove and Install Primary Fuel Filter Check Valve
      • Remove and Install Fuel System Surge Tank (6125ADW01/70 Engines)
      • Remove and Install Fuel Supply Pump
      • Remove and Install Fuel Manifold
      • Inspect Fuel Pressure Regulating Valve and Return Check Valve
      • Remove and Install Electronic Unit Injectors
      • Adjust Electronic Unit Injector Preload
      • Replace Electronic Unit Injector O-Rings
      • Replace Electronic Unit Injector Thrust Sleeve, Pad and O-Ring
      • Flush Fuel Rails
      • Bleed Fuel System
    • Electrical Engine Control Repair and Adjustment
      • Lucas Electronic Control System
      • Remove and Install Coolant Temperature Sensor
      • Remove and Install Fuel Temperature Sensor
      • Remove and Install Oil Pressure Sensor
      • Remove and Install Manifold Air Temperature (MAT) Sensor
      • Remove and Install Manifold Absolute Pressure (MAP) Sensor
      • Remove and Install Camshaft Position Sensor
      • Remove and Install Crankshaft Position Sensor
      • Connectors
      • Use Electrical Insulating Compound
      • Using High-Pressure Washer
      • Repair WEATHERPACK™ Connector
      • Remove Blade Terminals from Connector Body
      • Repair (Pull Type) METRI-PACK™ Connectors
      • Repair (Push Type) METRI-PACK™ Connectors
      • Repair DEUTSCH™ Connectors
  • Theory of Operation
    • Electronic Fuel System Operation
      • About This Group
      • Low Pressure Fuel System Flow Diagram
      • Low Pressure Fuel Supply System Operation
      • Electronic Unit Injector (EUI) Operation
    • Electrical Control System Operation
      • Electronic Control System Glossary of Terms
      • Electronic Control System Overview
      • Electronic Control System Operation
      • Monitoring Engine Parameters
      • Measuring Temperature
      • Measuring Manifold Air Pressure
      • Measuring Throttle Position
      • Determining Engine Airflow
      • Determining Engine Speed and Piston Position
      • Engine Control Unit (ECU)
      • Governor Modes
      • Maximum Fuel Quantity Control
      • Engine Control Unit (ECU) Self-Diagnosis
  • Diagnostics
    • Observable Diagnostics and Tests
      • About this Group of the Manual
      • Lucas ECU – Diagnosing Engine Malfunctions
      • Lucas ECU – Diagnosing Low Pressure Fuel System Malfunctions
      • B1 – ECU Does Not Communicate With DST
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      • B1 – ECU Does Not Communicate With DST Diagnostic Procedure
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      • B2 – Engine Cranks/No Start or Starts Hard (DST Available)
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      • B2 – Engine Cranks/No Start or Starts Hard (DST Available) Diagnostic Procedure
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      • B3 – Engine Cranks/No Start or Starts Hard (DST Not Available)
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      • B3 – Engine Cranks/No Start or Starts Hard (DST Not Available) Diagnostic Procedure
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      • B4 – Engine Misfires/Runs Irregularly
      • B4 – Engine Misfires/Runs Irregularly Diagnostic Procedure
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      • B5 – Low Power/Excessive Black Smoke (DST Available)
      • B5 – Low Power/Excessive Black Smoke (DST Available) Diagnostic Procedure
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      • B6 – Low Power/Excessive Black Smoke (DST Not Available)
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      • B6 – Low Power/Excessive Black Smoke (DST Not Available) Diagnostic Procedure
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      • B7 – Fuel Supply System Check
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      • B7 – Fuel Supply System Check Diagnostic Procedure
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      • Check Fuel Supply Pressure
      • Bleed the Fuel System
    • Trouble Code Diagnostics and Tests
      • About This Group of the Manual
      • Electrical Concepts
      • Electrical Circuit Malfunctions
      • Troubleshooting Circuit Malfunctions
      • Using a Digital Multimeter
      • Using the Break-Out-Box (BOB)
      • Cylinder Cutout Test Using JDG1250
      • Data Parameter Description
      • Diagnostic Scan Tool (DST) Engine Test Instructions—Cylinder Misfire Test
      • Diagnostic Scan Tool (DST) Engine Test Instructions—Relative Compression Test
      • Listing of Diagnostic Trouble Codes (DTCs)
      • Diagnostic Procedure
      • Intermittent Fault Diagnostics
      • Engine 011 — Analog Throttle Input Voltage Too High
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      • Engine 011 Analog Throttle Input Voltage Too High Diagnostic Procedure
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      • Engine 012 — Analog Throttle Input Voltage Too Low
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      • Engine 012 Analog Throttle Input Voltage Too Low Diagnostic Procedure
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      • Engine 013 — PWM Throttle Input Too High
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      • Engine 013 PWM Throttle Input Too High Diagnostic Procedure
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      • Engine 014 — PWM Throttle Input Too Low
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      • Engine 014 PWM Throttle Input Too Low Diagnostic Procedure
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      • Engine 021 — MAP Input Voltage Too High
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      • Engine 021 MAP Input Voltage Too High Diagnostic Procedure
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      • Engine 022 — MAP Input Voltage Too Low
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      • Engine 022 MAP Input Voltage Too Low Diagnostic Procedure
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      • Engine 023 — MAT Input Voltage Too High
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      • Engine 023 MAT Input Voltage Too High Diagnostic Procedure
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      • Engine 024 — MAT Input Voltage Too Low
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      • Engine 024 MAT Input Voltage Too Low Diagnostic Procedure
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      • Engine 025 — ECT Input Voltage Too High
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      • Engine 025 ECT Input Voltage Too High Diagnostic Procedure
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      • Engine 026 — ECT Input Voltage Too Low
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      • Engine 026 ECT Input Voltage Too Low Diagnostic Procedure
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      • Engine 027 — Fuel Rail Pressure Periodically Low
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      • Engine 027 Fuel Rail Pressure Periodically Low Diagnostic Procedure
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      • Engine 028 — Fuel Rail Pressure Continuously Low
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      • Engine 028 Fuel Rail Pressure Continuously Low Diagnostic Procedure
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      • Engine 031 — Cylinder 1 EUI Fault
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      • Engine 031 Cylinder 1 EUI Fault Diagnostic Procedure
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      • Engine 032 — Cylinder 2 EUI Fault
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      • Engine 032 Cylinder 2 EUI Fault Diagnostic Procedure
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      • Engine 033 — Cylinder 3 EUI Fault
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      • Engine 033 Cylinder 3 EUI Fault Diagnostic Procedure
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      • Engine 034 — Cylinder 4 EUI Fault
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      • Engine 034 Cylinder 4 EUI Fault Diagnostic Procedure
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      • Engine 035 — Cylinder 5 EUI Fault
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      • Engine 035 Cylinder 5 EUI Fault Diagnostic Procedure
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      • Engine 036 — Cylinder 6 EUI Fault
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      • Engine 036 Cylinder 6 EUI Fault Diagnostic Procedure
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      • Engine 037 — Fuel Temperature Input Voltage Too High
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      • Engine 037 Fuel Temperature Input Voltage Too High Diagnostic Procedure
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      • Engine 038 — Fuel Temperature Input Voltage Too Low
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      • Engine 038 Fuel Temperature Input Voltage Too Low Diagnostic Procedure
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      • Engine 041 — Crank Position Input Missing
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      • Engine 041 Crank Position Input Missing Diagnostic Procedure
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      • Engine 042 — Crank Position Input Out of Sync
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      • Engine 042 Crank Position Input Out of Sync Diagnostic Procedure
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      • Engine 043 — Cam Position Input Missing
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      • Engine 043 Cam Position Input Missing Diagnostic Procedure
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      • Engine 044 — Cam Position Input Out of Sync
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      • Engine 044 Cam Position Input Out of Sync Diagnostic Procedure
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      • Engine 045 — Cam/Crank Inputs Out of Sync
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      • Engine 045 Cam/Crank Inputs Out of Sync Diagnostic Procedure
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      • Engine 050 — Fuel Rail Pressure Switch Fault
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      • Engine 050 Fuel Rail Pressure Switch Fault Diagnostic Procedure
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      • Engine 052 — MAP Input Voltage Erratic
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      • Engine 052 MAP Input Voltage Erratic Diagnostic Procedure
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      • Engine 053 — MAT Input Voltage Erratic
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      • Engine 053 MAT Input Voltage Erratic Diagnostic Procedure
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      • Engine 054 — ECT Input Voltage Erratic
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      • Engine 054 ECT Input Voltage Erratic Diagnostic Procedure
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      • Engine 055 — Fuel Temp Input Voltage Erratic
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      • Engine 055 Fuel Temp Voltage Erratic Diagnostic Procedure
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      • Engine 081 — Engine Control Unit (ECU) Error
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      • Engine 081 Engine Control Unit (ECU) Error Diagnostic Procedure
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      • Engine 084 — Power Down Error
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      • Engine 084 Power Down Error Diagnostic Procedure
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  • Tools
    • Repair Tools
      • Fuel System Essential Tools
      • Fuel System Service Equipment and Tools
      • Fuel System Other Material
      • Electronic Control System Essential Tools
      • Electronic Control System Service Equipment and Tools
      • Electronic Control System Other Material
    • Diagnostic Service Tools
      • Engine Diagnostics and Testing Procedure Tools
      • Electronic Control System Diagnostic Tools
  • Specifications
    • Repair Specifications
      • Unified Inch Bolt and Cap Screw Torque Values
      • Metric Bolt and Cap Screw Torque Values
      • General OEM Engine Specifications
      • Fuel System Repair Specifications
      • Electronic Engine Control System Specifications
    • Diagnostic Specifications
      • Fuel System Diagnostic Specifications
      • Torque Curve Selection
      • ECU Terminal Identification
      • 6105H/6125H Engines Electronic Control System Component Location
      • 10.5 L & 12.5 L Electronic Control System Wiring Diagram
      • 10.5 L & 12.5 L OEM Application (With John Deere Instrument Panel) Electronic Control System Wiring Diagram