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    Diesel Systems 1-2 (DMS1-2)

    Quick Facts
    Course ID: DMS1-2
    Duration: 2 Days

    Detailed description of Diesel Systems 1-2 Electronic Diesel control, diagnostics training seminar.

    This training seminar is at a level parallel to the DMS 1-1 training. It is not necessary to have attended the DMS 1-1 training first, however it is strongly advisable to have concluded the AED seminar first.

    Covered in great detail is the Bosch VP 44 system, with as sample the Nissan ZD30DDTi engine management.
    The interrelation of all components including the ECU and EDU will be clearly understood, so that during fault finding a diagnostic conclusion can be accurately and efficiently made.

    • Chapter 1 covers:
      System overview, under bonnet and in vehicle components.

    • Chapter 2 covers:
      Temperature sensors, the electronic hook up to the ECU internal CPU, various trigger levels, failure effects, injection timing effect, faultcode setting procedure and time delays.

    • Chapter 3 covers:
      Crank angle sensors, the construction, the pulley lobe vs. signal relation, signal trigger levels, ECU signal modification for EDU and its timing deviation effects, EDU and crankshaft sensors off set, faultcode triggering.

    • Chapter 4 covers:
      Air mass sensors, its microscopic construction, common faults, earth off set, signal pulsing as result of bad turbo, smoke map, anti backflow, common problems and sensitivity, good vs. bad signal causing engine damage and drivability complaints, Air mass vs. Turbo pressure relation, fault code diagnostics.

    • Chapter 5 covers:
      Six wire EGR stepper motor diagnostics and testing, signal diagnostics, EGR effects on engine, EGR control (when on and when off),

    • Chapter 6 covers:
      Fuel filter water level sensor and how to hook up for fault code reading.

    • Chapter 7 covers:
      Glow plugs and glow control, timing in relation of the engine temperature and other factors.

    • Chapter 8 covers:
      Intake swirl control, the reason for having swirl control, diagnostics and common faults.

    • Chapter 9 covers:
      Variable geometry Turbo, construction, solenoid actuation, adjustments, signal diagnostics and ECU response time.

    • Chapter 10 covers:
      Intake manifold shut off valve, its control, hook-up and diagnostics.

    • Chapter 11 covers:
      Variable hydraulic engine mount, its chambers, vacuum control, fuel consumption effect and injection timing diagnostic errors.

    • Chapter 12 and 13 covers:
      Air-conditioning compressor clutch control, pressure switches, and temperature switching levels.

    • Chapter 14 covers:
      Radiator fan control by the ECU and air-conditioning pressure switches, diagnostics and ECU trigger levels.

    • Chapter 15 covers:
      ECCS relay, power supply problems and Can data bus interruption diagnostics.

    • Chapter 16 covers:
      VP 44 electronic fuel injection pump, its construction, and brief low pressure flow overview, high pressure flow, distribution and control.

    • Chapter 16.1 covers:
      VP 44 Spill valve, construction, its 3 stage actuation, signal diagnostics, current draw, over run signal, effect on EDU power supply, mechanical diagnostics.

    • Chapter 16.2 covers:
      Timing piston and TCV construction, duty cycle control under several circumstances, connection to EDU, measuring and signal diagnostics, tune-up kit recognition, signal phase offset, TCV actuation with electronic signal generator for mechanical diagnostics.

    • Chapter 17 covers:
      ECU and its barometric pressure sensor diagnostics.

    • Chapter 17.1 covers:
      EDU construction, cooling, signal measuring, control and reprogramming

    • Chapter 17.2 covers:
      Transmission control module.

    • Chapter 17.3 covers:
      Can data bus communication, in-depth signal diagnostics, schematic overview for quick diagnostics and ease of understanding, good and bad signals, measuring speed and common problems.

    • Chapter 18 covers:
      Serial communication, scantool diagnostics, live data signal flow, signal speed, good and bad signals, fault code extraction and erasing

    • Chapter 18.1 covers:
      Faultcode extraction without scantool, and code recording.

    • Chapter 18.2 covers:
      Faultcode lists and code setting parameters.

    • Chapter 18.3 covers:
      Fault code erasing without a scantool.

    • Chapter 19 covers:
      Accelerator pedal position sensor, construction, signal diagnostics, switching levels and synchronisation, faultcode parameters, signal dampening.

    • Chapter 20 covers:
      Brake light switch and logic.

    • Chapter 21 covers:
      Dashboard and Vehicle speed sensor signal conditioning.

    • Chapter 22 covers:
      Diagnostic study cases of real problems.

    During the training seminar guided live measurements will be made on most components. The explanations are clear and straightforward to understand.
    Individual component testing and understanding will become easy and the role and effect of each component in the overall system will be fully understood.

    Quote:
    After Lindsay from Lees Autoservice Ltd attended the DMS12 training seminar in Tauranga (25-Jul-07).
    Lindsay wrote as comment in the evaluation form that as most value to him was: "Everything on the course was of value."

    This diagnostic course's content is very practical and can be used immediately with no special tools required other than a fast (25 MS/sec or more for CAN data bus diagnostics) and accurate dual channel scope. Our ATS Scopes will be available during the course, or you can bring your own.

    Pre requisite: From our experience we advise that the diagnostician has completed the AED 'Automotive Electronic Diagnostic' 2 day training seminar, regardless achieved level through other training systems or experience!


    Successful completion of this course will result in gained knowledge and experience in
    • The electronic controlled VP44 Diesel engine management systems.
    • Diagnosing current faults, preventing and finding looming faults.
    • Approaching the system with a wide, comprehensive view with in-depth electronic and mechanical system specific skills.
    • Finding drivability problems and satisfying customer demands.
    • Measuring and comprehending all the system's electronic signals.
    • The mechanical workings of the VP44 electronic pump's key components.
    • Finding aftermarket system modifications and common faults.
    • CAN data bus communication diagnostics and repair (generic), plus between ECU and VP44 EDU.
    • Serial communication data flow, time frames and communication signal diagnostics.

    Following DMS 1-2 is the DMS 1-3 seminar, click here for the next stage.