Exam 6: Ignition System and Related Input Sensorsoutput Actuators Diagnosis

The coil-on-plug ignition system is sometimes referred to as a coil-over-plug ignition system.

A misfire diagnostic trouble code (DTC) is stored for cylinder #4 (P0304) on a coil-on-plug EI system. Preliminary testing of components following manufacturer's recommended procedures are within acceptable ranges. Technician A says that water may have intruded into the recessed spark plug well in the cylinder head. Technician B says that the ignition extension tube should be inspected for carbon tracking. Who is correct?

Misfires are more likely to occur under lower engine speeds and decreased load conditions.

During testing with a secondary ignition system oscilloscope, a technician notices that all cylinders exhibit low coil kV output. Which of the following is the most likely cause?

What are the advantages of the coil-on-plug systems compared to earlier ignition system designs?

Technician A says the spark plugs are in the secondary ignition circuit. Technician B says the ignition module is part of the secondary ignition circuit. Who is correct?

What is an alternative replacement to the platinum spark plug installed by the vehicle manufacturer?

What generic OBD II DTCs will be set if a misfire condition is detected?

The spark plugs are fired at:

The independent ignition system is also known as what?

The long-life platinum spark plugs are capable of lasting 50,000 miles (80,467 km).

The sensors that are an integral part of the ignition system are also an integral element in what monitor for OBD II systems?

As the rpm of an engine is increased, the ignition spark occurs:

Technician A says a Hall Effect switch voltage signal goes from 12 V to 0 V when the rotating metal blade enters the switch. Technician B says a Hall Effect switch produces an analog voltage signal. Who is correct?

What happens when a metal blade is positioned in a Hall Effect switch?