Detailed description of the DMS 1-1 (Diesel Management Systems 1 part 1).
This two day Denso spill valve systems seminar has at first instance been designed for the AADS (Australasian Association of Diesel Specialists).
The training covers Denso V3, V5 Spill valve type system diagnostics. Where possible the diagnostics on other electronic Diesel systems with similar components will be covered.
All sensors and their relation in the overall system.
Sensors covered: ECT, IAT, Turbo pressure sensor, TPS, EGR position sensor, Crankshaft position sensor, Pump shaft position sensor, fuel temp sensor, VSS, etc.
The volt trigger levels, the effects of each ECU trigger level and how to recognise that during diagnostics.
Be able to put voltage levels on a software scale.
The pit falls in diagnostics like fitting a glow timer as a result of a bad connection in a temperature sensor circuit and the subsequent over advance resulting in engine seizure.
All actuators, their role in the overall system
Actuators covered: Aircon control (when will the aircon not be actuated), throttle control (vacuum and 6 wire electronic), EGR, Glow system (for example after glow signals), Spill valve (mechanical and electronical), Timing control valve (and how to recognise the pump's mechanical timing position), MIL.
The actuators' electronic signals, common faults and the flow on effects, diagnosis.
The pump compensation resistors or ROM
their role of will clearly be described with common problems and possible on vehicle modifications.
The mechanical operation of the pump will be briefly described.
Fault code setting and fault code extraction procedure.
The reasoning behind some of the codes and subsequent diagnostic processes.
Emission diagnostics and Euro WoF Diesel emission test.
With an AVL emission tester (OIML approved) is first a (euro) WoF snap acceleration test performed for your information, following this test a diagnostic emission test will be performed, graphing the RPM vs the opacity. Various graph's will be looked at from the diagnostic point of view.
Of all components the interrelation in the overall system is the most important. It will for example be made clear how for example a bad connection in the spill valve circuit can have a lack of power as result with no fault codes or what so ever.
Or how a bad signal on the crankshaft sensor can have starting problems as result (often a car where to no avail a glow timer is fitted).
After Terry from Terrys Auto Services attended the DMS11 training seminar in Whangarei (27 07 2010). Terry wrote as comment in the evaluation form that as most value to him was: "Trimming and spill value control and operation and effect."
This diagnostic course's content is very practical and can be used immediately with no special tools required other than a fast (10 MS/sec or more) 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!