Cummins ISB, QSB, ISC, QSC, ISL, QSL CM850 Electronic Troubleshooting Manual

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Covers: Cummins ISB, ISBe2, ISBe3, ISBe4, QSB4.5, QSB5.9, QSB6.7, ISC, QSC8.3, ISL, ISLe3, ISLe4, and QSL9 CM850 Electronic Control System
Pages: 3,274
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High resolution downloadable PDF Cummins CM850 electronic control system troubleshooting manual, dated 2014. This 3,000+ page manual (4 volumes) covers detailed fault code and symptom troubleshooting procedures for the CM850 ECM electronics only. See appropriate engine manual for mechanical troubleshooting & repair.

Topics:

Introduction

Engine and System Identification

  • Engine Identification
  • Engine Diagrams

Familiarization

  • Electronic Controlled Fuel System
  • Service Tools and Hardware – Overview

Troubleshooting Fault Codes

  • Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source
  • Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Exhaust Gas Pressure Sensor Number 1 Circuit – Data Erratic, Intermittent, or Incorrect
  • Exhaust Gas Temperature Sensor Number 1 Circuit – Data Erratic, Intermittent, or Incorrect
  • Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source
  • Engine Control Module Critical Internal Failure – Bad Intelligent Device or Component
  • Engine Magnetic Crankshaft Speed/Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect
  • Intake Manifold Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Intake Manifold Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Intake Manifold One Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Accelerator Pedal or Lever Position Sensor Circuit – Shorted High
  • Accelerator Pedal or Lever Position Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal, or Shorted to High Source
  • Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Oil Pressure Sensor Choice
  • Oil Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Oil Pressure Low Choice
  • Oil Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Coolant Temperature Sensor Circuit Choice
  • Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Engine Coolant Temperature 1 Sensor Circuit Choice
  • Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Engine Coolant Temperature Choice
  • Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Accelerator Pedal or Lever Position 1 Sensor Circuit Frequency – Data Valid but Below Normal Operational Range – Most Severe Level
  • Accelerator Pedal or Lever Position Sensor One – Data Valid but Above Normal Operational Range – Most Severe level
  • Engine Coolant Temperature Choice
  • Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
  • Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
  • Intake Manifold Air Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Intake Manifold Air Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Intake Manifold 1 Temperature Choice
  • Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
  • Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Sensor Supply Voltage Number 2 Circuit Choice
  • Sensor Supply Voltage Number 2 Circuit – Voltage Below Normal or Shorted to Low Source
  • Sensor Supply 2 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Coolant Level Sensor 1 Circuit – Choice
  • Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
  • Coolant Level Sensor 1 Circuit – Choice
  • Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
  • Coolant Level Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Barometric Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Sensor Supply Voltage Number 2 Circuit Choice
  • Sensor Supply Voltage Number 2 Circuit – Voltage Above Normal or Shorted to High Source
  • Sensor Supply 2 Circuit – Voltage Above Normal or Shorted to High Source
  • Engine Crankshaft Speed/Position Choice
  • Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Most Severe Level
  • Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Most Severe Level
  • Coolant Level Low – Data Valid but Below Normal Operational Range – Most Severe Level
  • External Speed Command Input (Multiple Unit Synchronization
  • Sensor Supply 3 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Vehicle Speed Sensor Circuit – Data Erratic, Intermittent, or Incorrect
  • Vehicle Speed Sensor Circuit Tampering Has Been Detected – Abnormal Rate of Change
  • Fan Control Circuit – Voltage Below Normal or Shorted to Low Source
  • Engine Oil Level – Data Valid But Below Normal Operational Range – Most Severe Level
  • Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect
  • Antitheft Password Valid Indicator – Data Erratic, Intermittent, or Incorrect
  • High Fuel Pressure Solenoid Valve Circuit Choice
  • High Fuel Pressure Solenoid Valve Circuit – Voltage Below Normal or Shorted to Low Source
  • High Fuel Pressure Solenoid Valve Circuit Choice
  • High Fuel Pressure Solenoid Valve Circuit – Voltage Above Normal or Shorted to High Source
  • Fuel Pumping Element Number 1 (Front
  • Fault Pump Pressurizing Assembly 1 – Mechanical System Not Responding Properly or Out of Adjustment
  • Engine Speed/Position Sensor (Crankshaft
  • SAE J1939 Multiplexing PGN Timeout Error – Abnormal Update Rate
  • SAE J1939 Multiplexing Configuration Error – Out of Calibration
  • SAE J1939 Multiplexing Accelerator Pedal or Lever Sensor System Error – Received Network Data Error
  • SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Data Error – Received Network Data Error
  • Proprietary Datalink Error (/Vehicle Datalink
  • Auxiliary Temperature Sensor Input 1 – Special Instructions
  • Auxiliary Temperature Sensor Input 1 – Voltage Above Normal, or Shorted to High Source
  • Auxiliary Temperature Sensor Input 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Barometric Pressure – Data Erratic, Intermittent, or Incorrect
  • Auxiliary Pressure Sensor Input 1 – Special Instructions
  • Auxiliary Pressure Sensor Input 1 – Special Instructions
  • Crankcase Pressure – Data Above Normal Operational Range – Severe Level
  • Auxiliary Pressure Sensor Input 1 Circuit – Voltage Above Normal, or Shorted to High Source
  • Auxiliary Pressure Sensor Input 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Real Time Clock Power Interrupt – Data Erratic, Intermittent, or Incorrect
  • Injector Solenoid Driver Cylinder Circuit – Current Below Normal, or Open Circuit
  • Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect
  • Engine Control Module Data Lost – Data Erratic, Intermittent, or Incorrect
  • Electronic Calibration Code Incompatibility – Out of Calibration
  • Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component
  • Injector Power Supply – Bad Intelligent Device or Component
  • Sensor Supply Voltage Number 1 Circuit – Voltage Below Normal or Shorted to Low Source
  • Sensor Supply Voltage Number 1 Circuit – Voltage Above Normal or Shorted to High Source
  • Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Above Normal or Shorted to High Source
  • SAE J1587/J1922 Data Link – Can Not Transmit
  • Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Most Severe Level
  • Water-In-Fuel Indicator Choice
  • Water-In-Fuel Indicator – Data Valid but Above Normal Operational Range – Least Severe Level
  • Water-In-Fuel Indicator – Data Valid but Above Normal Operational Range – Least Severe Level
  • SAE J1939 Data Link – Cannot Transmit
  • SAE J1939 Datalink – Abnormal Update Rate
  • Water-In-Fuel Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Water-In-Fuel Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Idle Validation Switch Circuit Choice
  • Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect
  • Accelerator Pedal or Lever Idle Validation Circuit – Out of Calibration
  • Intake Manifold Pressure Sensor Circuit – Data Incorrect
  • Power Supply Lost With Ignition On – Data Erratic, Intermittent or Incorrect
  • Oil Pressure Switch Sensor Circuit – Data Erratic, Intermittent or Incorrect
  • Intake Manifold 1 Temperature – Data Erratic, Intermittent, or Incorrect
  • Battery 1 Voltage – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Battery 1 Voltage – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Below Normal or Shorted to Low Source
  • Fuel Pressure High Choice
  • Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level
  • Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level
  • Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Engine Oil Level – Data Valid But Below Normal Operational Range – Least Severe Level
  • Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Multiple Unit Synchronization Switch – Data Erratic, Intermittent, or Incorrect
  • Engine Oil Level Sensor Circuit – Voltage Above Normal, or Shorted to High Source
  • Engine Oil Level Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
  • Auxiliary Intermediate (PTO
  • Auxiliary Input/Out Two Circuit Voltage Above Normal or Shorted to High Source
  • Auxiliary Alternate Torque Validation Switch – Data Erratic, Intermittent, or Incorrect
  • Auxiliary Input/Output Three Circuit – Voltage Above Normal, or Shorted to High Source
  • Turbocharger 1 Wastegate Control – Mechanical System Not Responding Properly or Out of Adjustment
  • Idle Validation Switch Circuit Choice
  • Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
  • Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
  • Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
  • Injector Metering Rail One Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect
  • Fuel Pump Delivery Pressure Low Choice
  • Fuel Pump Delivery Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Starter Relay Circuit – Voltage Above Normal or Shorted to High Source
  • Starter Relay Circuit – Voltage Below Normal or Shorted to Low Source
  • Turbocharger Number 1 Speed High Choice
  • Turbocharger Number 1 Speed High – Warning Level
  • Turbocharger Number 1 Speed High – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Electrical Charging System Voltage High – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Electrical Charging System Voltage Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Electrical Charging System Voltage Low – Data Valid but Below Normal Operational Range – Most Severe Level
  • Auxiliary Commanded Dual Output Shutdown – Special Instructions
  • Change Lubricating Oil and Filter – Condition Exists
  • Turbocharger Speed Sensor Choice
  • Turbocharger Speed Sensor – Below Normal Operating Range
  • Turbocharger Number 1 Speed Low – Data Valid but Below Normal Operating Range – Moderately Severe Level
  • Engine Oil Level – Data Valid But Above Normal Operational Range – Most Severe Level
  • Engine Crankshaft Speed/Position – Data Erratic, Intermittent, or Incorrect
  • Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
  • Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Engine Speed/Position Sensors Choice
  • Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment
  • Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment
  • Electronic Control Module Data Lost – Condition Exists
  • Engine Speed Sensor (Camshaft
  • Auxiliary Equipment Sensor Input Number 3 ( Switch
  • Adaptive Cruise Control – Error
  • Cylinder Power Imbalance Detected
  • EGR Valve Position – Data Erratic, Intermittent, or Incorrect
  • VGT Position Sensor – Data Erratic, Intermittent, or Incorrect
  • Power Lost Without Ignition Off Choice
  • Power Lost Without Ignition Off – Data Erratic, Intermittent or Incorrect
  • Power Lost Without Ignition Off – Data Erratic, Intermittent or Incorrect
  • Injector Solenoid Driver Cylinder 1 – Mechanical System Not Responding Properly or Out of Adjustment
  • Injector Solenoid Driver Cylinder 2 – Mechanical System Not Responding Properly or Out of Adjustment
  • Injector Solenoid Driver Cylinder 3 – Mechanical System Not Responding Properly or Out of Adjustment
  • Injector Solenoid Driver Cylinder 4 – Mechanical System Not Responding Properly or Out of Adjustment
  • Injector Solenoid Driver Cylinder 5 – Mechanical System Not Responding Properly or Out of Adjustment
  • Injector Solenoid Driver Cylinder 6 – Mechanical System Not Responding Properly or Out of Adjustment
  • EGR Valve Position – Data Erratic, Intermittent, or Incorrect
  • VGT Position Sensor – Data Erratic, Intermittent, or Incorrect
  • Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Above Normal or Shorted to High Source
  • Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Below Normal or Shorted to Low Source
  • Accelerator Pedal or Lever Position Sensor 1 and 2 – Data Erratic, Intermittent, or Incorrect
  • Komnet Datalink Cannot Transmit – Data Erratic, Intermittent, or Incorrect
  • Auxiliary Equipment Sensor Input Number 3 ( Switch
  • Engine Misfire Cylinder 1 – Condition Exists
  • Engine Misfire Cylinder 2 – Condition Exists
  • Engine Misfire Cylinder 3 – Condition Exists
  • Engine Misfire Cylinder 4 – Condition Exists
  • Engine Misfire Cylinder 5 – Condition Exists
  • Engine Misfire Cylinder 6 – Condition Exists
  • Catalyst Inlet Temperature Sensor Swapped with Outlet – Condition Exists
  • Catalyst Missing – Condition Exists
  • Exhaust Gas Temperature 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Exhaust Gas Temperature Circuit 1 – Voltage Above Normal, or Shorted to Low Source
  • Exhaust Gas Temperature 1 – Data Erratic, Intermittent, or Incorrect
  • Catalyst Tank Level Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
  • Catalyst Tank Level Sensor Circuit – Voltage Above Normal, or Shorted to High Source
  • Catalyst Tank Level – Data Valid but Below Normal Operational Range – Moderately Severe Level.
  • Catalyst Tank Level – Data Erratic, Intermittent, or Incorrect
  • Exhaust Gas Temperature 2 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Exhaust Gas Temperature 2 Circuit – Voltage Above Normal, or Shorted to Low Source
  • Exhaust Gas Temperature 2 – Data Erratic, Intermittent, or Incorrect
  • Catalyst Tank Temperature – Voltage Below Normal, or Shorted to Low Source
  • Catalyst Tank Temperature – Voltage Above Normal, or Shorted to High Source
  • Catalyst Tank Temperature – Data Erratic, Intermittent, or Incorrect
  • Dosing Control Unit – Bad Intelligent Device or Component
  • Catalyst Reagent Dosing Unit Input Lines – Condition Exists
  • Catalyst Tank Heater Circuit – Voltage Above Normal, or Shorted to High Source
  • Catalyst Tank Heater Circuit – Voltage Above Normal, or Shorted to High Source
  • Catalyst Over Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
  • Real-Time Clock Power Interrupt – Data Erratic, Intermittent or Incorrect
  • Aftertreatment Outlet NOx Sensor – Voltage Below Normal or Shorted to Low Source
  • Aftertreatment Outlet NOx Sensor – Data Erratic, Intermittent, or Incorrect
  • Aftertreatment #1 Air Enable Actuator – Voltage Above Normal, or Shorted to High Source
  • Aftertreatment #1 Air Enable Actuator – Voltage Below Normal, or Shorted to Low Source
  • Catalyst Tank Level Sensor – Data Erratic, Intermittent, or Incorrect
  • Dosing Control Unit Datalink – Abnormal Update Rate
  • Catalyst Tank Heater Circuit – Data Valid But Below Normal Operating Range – Moderately Severe Level
  • Catalyst Tank Heater Circuit – Data Valid But Above Normal Operating Range – Moderately Severe Level
  • Auxiliary Temperature Sensor Input 1 Circuit – Root Cause Not Known
  • Exhaust Gas Temperature 1 – Data Valid but Above Normal Operational Range – Least Severe Level
  • Engine Misfire for Multiple Cylinders – Condition Exists
  • Intake Manifold 1 Temperature – Abnormal Rate of Change
  • Exhaust Gas Temperature 1 – Abnormal Rate of Change
  • Exhaust Gas Temperature 2 – Abnormal Rate of Change
  • Wheel-Based Vehicle Speed – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Injector Metering Rail 1 Pressure – Data Valid but Above Normal Operational Range – Most Severe Level
  • Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal, or Shorted to Low Source
  • Sensor Supply Voltage 4 Circuit – Voltage Above Normal or Shorted to High Source
  • Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source
  • Auxiliary Equipment Sensor Input Engine Protection Critical-Special Instructions
  • Fuel Pump Delivery Pressure Low Choice
  • Fuel Pump Delivery Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Fuel Pump Delivery Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Fuel Pump Delivery Pressure High Choice
  • Fuel Pump Delivery Pressure High – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Fuel Pump Delivery Pressure High – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Engine Control Module Calibration Program Memory (RAM
  • Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Most Severe Level
  • Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Above Normal or Shorted to High Source
  • Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Below Normal or Shorted to Low Source
  • EGR Valve Position Sensor Circuit – Voltage Above Normal or shorted to High Source
  • EGR Valve Position Sensor Circuit – Voltage Below normal or Shorted to Low Source
  • EGR Valve Differential Pressure Sensor Circuit – Shorted High
  • EGR Valve Differential Pressure Sensor Circuit – Shorted Low
  • Fuel Inlet Meter Device – Data Valid but Above Normal Operational Range – Moderately Severe Level
  • Fuel Inlet Meter Device Flow Demand Lower Than Expected – Data Valid but Below Normal Operational Range – Moderately Severe Level
  • Fueling Actuator Number 1 Circuit Error Conditions Exists
  • Engine Crankshaft Speed/Position – Data Erratic, Intermittent, or Incorrect
  • Backup Engine Speed/Position Sensor Number 2 – Data Erratic, Intermittent, or Incorrect
  • Turbocharger Speed Choice
  • Turbocharger Speed – Invalid Rate of Change Detected
  • Turbocharger Speed Invalid Rate of Change detected – Abnormal Rate of Change
  • Exhaust Gas Temperature Choice
  • Exhaust Gas Temperature – Data Above Normal
  • Turbocharger Turbine Inlet Temperature (Calculated
  • Turbocharger Compressor Outlet Temperature Choice
  • Turbocharger Compressor Outlet Temperature – Data Above Normal
  • Turbocharger Compressor Outlet Air Temperature (Calculated
  • EGR Valve Failed Automatic Calibration Procedure
  • EGR Valve Control Circuit – Current Below Normal or Open Circuit
  • EGR Valve Control Circuit – Voltage Below Normal or Shorted to Low Source
  • EGR Valve Control Circuit – Voltage Above Normal or Shorted to High Source
  • EGR Valve Control Circuit – Current Above Normal or Grounded Circuit
  • EGR Valve Control – Mechanical System Not Responding Properly or Out of Adjustment
  • EGR Differential Pressure Sensor – Data Valid But Above Normal Operating Range – Moderately Severe Level
  • Engine Brake Actuator Circuit Number 1 – Voltage Below Normal or Shorted to Low Source
  • Engine Brake Actuator Circuit Number 2 – Voltage Below Normal or Shorted to Low Source
  • Engine Brake Actuator Circuit Number 1 – Voltage Above Normal or Shorted to High Source
  • Engine Brake Actuator Circuit Number 2 – Voltage Above Normal or Shorted to High Source
  • Exhaust Gas Pressure Sensor Circuit – Shorted High
  • Exhaust Gas Pressure Sensor Circuit – Shorted Low
  • Exhaust Gas Recirculation (EGR
  • Recirculation Exhaust Gas Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
  • Fan Control Circuit – Voltage Above Normal or Shorted to High Source
  • Turbocharger Position Sensor Circuit – Shorted High
  • Turbocharger Position Sensor Circuit – Shorted Low
  • Variable Geometry Turbocharger Actuator Circuit – Current Below Normal, or Open Circuit
  • VGT Actuator Choice
  • VGT Actuator – Voltage Below Normal or Shorted to Low Source
  • VGT Actuator Driver Circuit – Voltage Below Normal, or Shorted to Low Source
  • VGT Actuator Choice
  • VGT Actuator – Voltage Above Normal or Shorted to High Source
  • VGT Actuator Driver Circuit – Voltage Above Normal, or Shorted to High Source
  • Turbocharger Actuator Motor Circuit – Current Above Normal
  • Turbocharger Actuator Motor – Mechanical System Not Responding Properly
  • Variable Geometry Turbocharger Actuator Position Failed Automatic Calibration Procedure – Out of Calibration
  • Coolant Level – Data Valid But Below Normal Operational Range – Least Severe Level
  • Exhaust Pressure Sensor Circuit – Data Erratic, Intermittent, or Incorrect
  • Intake Air Heater Number 1 Circuit – Voltage Above Normal or Shorted to High Source
  • Intake Air Heater Number 1 Circuit – Voltage Below Normal or Shorted to Low Source
  • Auxiliary PWM Driver Number 1 – Voltage Above Normal or Shorted to High Source
  • Auxiliary PWM Driver Number 1 – Voltage Below Normal or Shorted to Low Source
  • Engine Coolant Temperature – Condition Exists
  • Aftertreatment Outlet NOx Sensor – Abnormal Update Rate
  • Aftertreatment Outlet NOx – Data Valid but Above Normal Operational Range – Least Severe Level
  • Aftertreatment Outlet NOx – Data Valid but Above Normal Operational Range – Most Severe Level
  • EGR Temperature – Data Valid But Above Normal Operating Range, Least Severe Level
  • EGR Temperature – Data Valid But Above Normal Operating Range, Moderately Severe Level
  • Engine Coolant Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level
  • Intake Manifold Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level
  • Intake Manifold Pressure Sensor Circuit – Data Erratic, Intermittent or Incorrect
  • Dosing Control Unit Temperature – Data Erratic, Intermittent, or Incorrect
  • EGR Valve Actuator Over Temperature (Calculated
  • Variable Geometry Turbocharger Actuator Over Temperature

Troubleshooting Symptoms

  • Troubleshooting Procedures and Techniques
  • Troubleshooting Symptoms Charts
  • Communication Error – Electronic Service Tool or Control Device
  • Engine Fan Does Not Operate or Operates Erratically
  • Engine Will Not Shut Off
  • Fault Code Warning Lamps Stay On (No Apparent Reason)
  • Fault Code Warning Lamps Do Not Illuminate
  • Intake Manifold Air Temperature Above Specification
  • Low Idle Adjust Switch Does Not Work
  • PTO or Cruise Control Does Not Operate
  • Air Shutoff Valve will not Activate
  • Air Shutoff Valve will not Deactivate

Troubleshooting Symptoms (New Format)

  • ECM – No Communication Troubleshooting Tree
  • Engine Performance Troubleshooting Tree – ISC, QSC, ISL, and QSL CM850
  • Engine Performance Troubleshooting Tree – ISB, ISBe, and QSB CM850 without EGR
  • Engine Performance Troubleshooting Tree – QSB5.9 Marine CM850
  • Engine Performance Troubleshooting Tree – QSC and QSL Marine CM850
  • Engine Performance Troubleshooting Tree – ISB, ISBe, and QSB CM850 with EGR
  • Fuel Economy Troubleshooting Tree

Electronic Engine Controls

  • Service Tools
  • Barometric Air Pressure Sensor
  • Battery Ground Circuit
  • Clutch Pedal Position Switch
  • Clutch Pedal Position Switch Circuit
  • Exhaust Gas Temperature Sensor
  • Engine Coolant Level Sensor
  • Engine Coolant Temperature Sensor
  • Cruise Control or PTO ON/OFF Switch
  • Cruise Control or PTO ON/OFF Switch Circuit
  • Cruise Control or PTO Set/Resume Select Switch
  • Cruise Control or PTO Set/Resume Select Switch Circuit
  • Diagnostic Test Mode Switch
  • Diagnostic Test Mode Switch Circuit
  • Electronic Control Module (ECM
  • ECM Calibration Code
  • Engine Brake ON/OFF Switch
  • Engine Brake ON/OFF Switch Circuit
  • Engine Brake Selector Switch
  • Engine Wiring Harness
  • Fan Clutch Circuit
  • Fault Lamp
  • Fault Lamp Circuit
  • Idle Adjust Switch
  • Idle Adjust Switch Circuit
  • Idle Validation Switch
  • Lubricating Oil Level Sensor
  • Intake Manifold Air Temperature Sensor
  • Intake Manifold Pressure Sensor
  • Internal Actuator Wiring Harness
  • Key Switch Battery Supply Circuit
  • Engine Oil Pressure Sensor
  • Wiring Harness
  • Programmable Features and Parameters Not Correct
  • Remote PTO Switch Circuit
  • Remote PTO Switch
  • Tachometer Circuit
  • Accelerator Pedal or Lever Position Sensor
  • Accelerator Pedal or Lever Position Sensor Circuit
  • Unswitched Battery Supply Circuit
  • Brake Pedal Position Switch
  • Brake Pedal Position Switch Circuit
  • Vehicle Speed Sensor, Digital Input
  • Vehicle Speed Sensor, Magnetic Pick Up
  • Vehicle Speed Sensor Circuit
  • Fuel Control Valve
  • Rail Fuel Pressure Sensor
  • Fuel Pump Actuator
  • Water In Fuel Sensor
  • Engine Brake Harness
  • Intake Manifold Pressure/Temperature Sensor
  • Data Link Circuit, SAE J1939
  • Data Link Circuit, SAE J1587
  • Exhaust Brake ON/OFF Switch
  • Exhaust Brake ON/OFF Switch Circuit
  • Ring Terminal
  • Fuse, Harness In-Line
  • Connector, Butt Splice
  • Weather Pak Connector Series
  • Metripack Connector Series
  • AMP Connector Series
  • Deutsch™ DRC Connector Series
  • Deutsch™ DT Connector Series
  • Deutsch™ DTM and DTP Connector Series
  • Deutsch™ HD10 Connector Series
  • Deutsch™ HDP20 and HD30 Connector Series
  • ITT Cannon Connector Series
  • AMP VP44 Connector Series
  • Packard Relay Connector
  • Ford™ Connector Series
  • D-Sub Miniature Connector
  • Bosch™ Actuator and Sensor Connector Series
  • Bosch™ ECM Injector Driver Connector Series
  • Bosch™ ECM Actuator and Sensor Connector Series
  • Bosch™ ECM Connector Series
  • Framatome Connector Series
  • Power Train Protection Switch
  • Power Train Protection Switch Circuit
  • Two-Speed Axle Switch
  • Two-Speed Axle Switch Circuit
  • Air Conditioning Pressure Switch
  • Air Conditioning Pressure Switch Circuit
  • Accelerator Interlock Switch
  • Accelerator Interlock Switch Circuit
  • Cab Switchable Governor Switch
  • Cab Switchable Governor Switch Circuit
  • Switched Maximum Operating Speed Switch
  • Switched Maximum Operating Speed Switch Circuit
  • Multi Unit Synchronization Switch
  • Multi Unit Synchronization Switch Circuit
  • Intermediate Speed Control 1 Switch
  • Alternate Torque Switch
  • Real-Time Clock Battery Backup Module
  • Tachograph Circuit
  • Engine Protection Override Switch
  • Engine Protection Override Switch Circuit
  • Fan Clutch Switch
  • Fan Clutch Switch Circuit
  • Remote Accelerator Switch
  • Remote Accelerator Switch Circuit
  • Engine Torque Limit Control Switch
  • Engine Torque Limit Control Switch Circuit
  • Multimeter Usage
  • Resistance Measurement Using a Multimeter and a Wiring Diagram
  • Component Connector and Pin Inspection
  • Inactive or Intermittent Fault Code
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
  • EGR Differential Pressure Sensor
  • EGR Valve Position Sensor
  • EGR Valve Assembly Circuit
  • Exhaust Gas Pressure Sensor
  • EGR Temperature Sensor
  • Fan Control Switch
  • Fan Control Switch Circuit
  • Maximum Engine Speed Switch
  • Maximum Engine Speed Switch Circuit
  • Turbocharger Control Valve
  • Turbocharger Speed Sensor
  • Turbocharger Compressor Intake Air Temperature Sensor
  • Fuel Lift Pump
  • Pressure Sensor
  • Pressure Sensor Circuit
  • Temperature Sensor
  • Temperature Sensor Circuit
  • Turbocharger Position Sensor
  • Air Heater Control Relay Circuit
  • Transmission Shift Modulation Signal Circuit
  • Starter Lockout/Switched Outputs Relay Circuit
  • ECM ROM Boot
  • Engine Datalinks
  • Slow Idle Switch
  • Slow Idle Switch Circuit
  • Station Select Switch
  • Station Select Switch Circuit
  • Aftertreatment Diesel Exhaust Fluid Dosing Unit
  • Crankcase Pressure Sensor
  • Aftertreatment Outlet NOx Sensor
  • Bosch Aftertreatment DEF Controller Connector

Specifications

4021416

SKU: MPM01062 Category: Tag: