Which technician is correct about the ignition system type in the figure?

• A. Technician B
• B. Technician A
• C. Technician C
• D. Technician D

Answer: (B)

The key idea is how to tell ignition system type from a diagram. If you see a distributor cap and rotor feeding a single set of spark plug wires to all cylinders, that’s a distributor-based ignition system. If the diagram shows no distributor cap and instead has individual ignition coils or coil packs wired directly to each spark plug (coil-on-plug or coil-per-cylinder), that’s a distributorless ignition system. A wasted-spark setup would show coils that fire two plugs at once, typically with wiring indicating paired cylinders.

The figure shows coils located near each spark plug with no distributor cap, meaning each cylinder gets its own spark via coil packs rather than a central distributor. That matches the description given by Technician B, so B is the correct determination. The other descriptions would imply a distributor or a different arrangement (like wasted-spark), which the diagram does not depict.