Trade of Motor Mechanic - eCollege

Module 4 - Unit 1
Trade of Motor Mechanic - Phase 2 Course Notes
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2
Basic Ignition Systems
State the Health and Safety procedures applicable when
working on standard and high energy ignition systems
Remove a set of High Tension (HT) leads from a training
vehicle/unit, measure and compare their electrical resistance
to the manufacturer's specification
Refit the H.T. leads in the correct firing order
Remove/check the electrode condition of taper-seated and
gasket seated spark plugs and refit
Remove a distributor cap and rotor, check their condition
and refit
Test the electrical resistance of an ignition coil
Draw a block circuit diagram of a basic electronic ignition
system that uses a distributor based signal generator (pickup)
Describe the function of the Inductive and Hall type signal
generators (pickups) in an electronically controlled ignition
system
Describe the function, basic operating and test principles
of the amplifier/switching unit in Inductive and Hall effect
electronic ignition systems
Write a basic illustrated report on the ignition system structure
of a training vehicle/unit, its main components type, (i.e.
inductive or Hall Effect) their location and basic electrical
circuit
Remove a 'distributor type' pick-up unit, examine the
connecting wiring/wiring connections for continuity and
electrical resistance, the distributor spindle and drive gear for
wear and refit
State the NCT/DoT VTM requirements for engine idle speed
and exhaust system performance
Test the engine idle speed and exhaust system performance
for compliance with NCT/DoT VTM requirements
Revision 2.0 July 2007