Skytech

Industry Training

ST45 Electronics Diesel Fuel Injection Troubleshooting Diagnostics (3 days)

The student is able to recommend repairs for diesel fuel injection full-authority engine management systems following manufacturers recommendations. Upon successful completion the student is able to: Define the fundamentals of diesel fuel injection full-authority engine management systems. Describe the construction features of full-authority electronically controlled diesel fuel injection systems and components. Explain the principles of operation of full-authority electronically controlled diesel fuel injection systems and components. Perform the inspection and diagnostic procedures for full-authority electronically controlled diesel fuel injection systems and components. Outline the checking procedures for electrical connector sealing and ground connection integrity.

Module Content:

1. Define the fundamentals of Electronic Control Modules (ECMs)
   • analog/digital signals
   • binary systems
   • logic gates
   • multiplexing
   • fibre optics
2. Describe the types of construction features of ECMs
   • input devices
   • central processing unit
   • data storage
     • Random Access Memory (RAM)
     • Read Only Memory (ROM)
     • Programmable Read Only Memory (PROM)
     • Erasable Programmable Read Only Memory (EPROM)
     • Electronically Erasable Programmable Read Only Memory (EEPROM)
   • output circuits
     • reference voltage
     • fan relays
3. Explain the principles of operation of ECMs
   • analog to digital convertes
   • signal filtration
   • central processing unit (CPU)
   • processing cycle
   • logic sequencing
   • data storage
   • output circuits
4. Perform inspection and diagnostic procedures and perform assigned operations for computerized management systems
   • perform fault code identification
   • perform a demonstration of reader/programmer diagnostic tests
   • perform PC diagnostic tests
   • perform diagnostic fault codes extraction
   • perform a demonstration of sensor input tests
   • perform a demonstration of output device tests
5. Recommend reconditioning or repairs following manufacturers recommendations and perform assigned operations on electronic fuel systems
   • identify static electricity and induction interference prevention procedures
   • outline ECM and Sensor replacement procedures
   • outline wiring harness repair and replacement procedures.

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