EP - Chapter 16

Which switching device uses LEDs?

• Hall effect

• Magnetic reluctor

• Pickup coil

• Optical sensor

Technician A says that on bypass-type ignition system, the ignition system is timed by the ignition module when starting. Technician B says that after the engine starts, the ignition system does not use the PCM to time spark plug firing. Which technician is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician

Answer explanation

Tech A situation is like when the instructor leaves the class, the class doesn't immediately start acting like wild animals ,, Tech B situation DOES use the PCM

Waste spark ignition systems are being discussed. Technician A says that it requires more voltage to fire the compression cylinder than the companion cylinder. Technician B says that waste spark systems using compression sensing electronics do not require a camshaft sensor for engine position. Which technician is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician

Answer explanation

Tech A requires more voltage for compression because the pressure is higher ,, Tech B is correct

Which statement below is correct?

• Most ignition systems work by switching the circuit grounding the ignition coil's primary windings

• Most ignition systems work by switching the circuit grounding the ignition coil's secondary windings

• Most ignition systems work by switching the circuit to power the ignition coil's primary windings

• Most ignition systems work by switching the circuit to power the ignition coil's secondary windings

Coil-on-plug ignition systems have which of the following advantages over waste spark systems?

• Decreased cost

• Reduced number of ignition coils

• Reduces electromagnetic interference

• Uses fewer spark plugs

Which statement below is correct?

• No voltage is induced in the primary circuit

• No voltage is induced in the secondary circuit

• Turning on the low voltage primary coil induces a high voltage in the secondary windings

• Turning off the low voltage primary coil induces a high voltage in the secondary windings

Technician A says that a defective crankshaft position sensor can cause a no-spark condition. Technician B says that a faulty ignition control module can cause a no-spark condition. Which technician is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician

HEI and EIS are examples of _____.

• Coil on plug ignition systems

• Waste spark systems

• Distributor ignition systems

• pickup coil types

An ion-sensing ignition system allows the ignition system itself to be able to _____.

• Detect spark knock

• Detect rich or lean air-fuel mixture

• Detect misfire

• All of the above

Two technicians are discussing distributor ignition. Technician A says that the pickup coil or optical sensor in the distributor is used to pulse the ignition module (igniter). Technician B says that some distributor ignition systems have the ignition coil inside the distributor cap. Which technician is correct?

• Technician A
• Technician B
• Both Technicians
• Neither Technician