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WorksheetsElectronic Ignition
Total questions: 19
Worksheet time: 9mins
The spark is caused by high voltage jumping a gap between the spark plug electrodes that project into the combustion chamber.
true
false
The CKP is a critical PCM output
true
false
CKP and CMP provide the PCM with the same output data.
true
false
Which of the following monitors crankshaft position and speed. It also synchronizes ignition firing.
CMP
CKP
KS
Coil
A variable reluctance sensor consisting of a permanent magnet with a coil of wire wrapped around it.
HO2S
KS
CKP
TB
The purpose of the Camshaft Position or CMP sensor is to identify cylinder number one compression stroke. Choose the best answer.
FALSE
TRUE
False- CKP identifies the cylinder one position compression stroke
Most ignition coils can produce a maximum voltage of up to...
5 volt reference
60,000 volts
30,000 volts
12 volts
The length of time a spark is maintained in a secondary ignition circuit is called....
dwell
secondary dwell
coil speed
spark duration
Which tool should be used to check the resistance of the coil windings and for opens or shorts to ground?
test light
digital oscilloscope
ohmmeter
hammer
_____________ represents the voltage needed to overcome the resistance in the secondary circuit.
intermediate section
spark duration
firing line
dwell
Multiple transistors located in an ignition control module help to control dwell and time the ignition firing.
true
false
Distributors were replaced as technology progressed by...
CKP, KS, CMP, COP
Cap and Rotor
Spark plug wires, COP
CMP
A reduction in ignition timing occurs when....
Knock sensor input to PCM
CKP is overspeed
CMP signals don't match
Knock sensor output to PCM
Under heavy load, the ignition timing must be advanced.
false
true
Reach, heat range, and air gap are all characteristics that affect the performance of which ignition system component?
ignition coil
points and condenser
spark plugs
spark plug wires
What is the purpose of the ignition module?
raise and lower secondary voltage
turn on and off the magnetic pickup
turn on and off the primary current
A spark plug fires before the piston reaches top dead centre (TDC).
TRUE
FALSE
What is this component?
Ignition Plugs
Ignition Module
Ignition Lock Cyllinder
Ignition Coil Pack
When testing coil primary resistance, what does an infinite reading indicate?
low resistance
a ground
open winding
a short
