What component(s) triggers or controls the ignition module?

The ignition module plays a crucial role in controlling the timing and operation of the ignition system in an internal combustion engine, ensuring that the spark plugs fire at precisely the right moment to optimize performance and efficiency. The ignition module can be triggered or controlled by various components, including the pickup coil, the computer (engine control unit), and the crankshaft sensor.

The pickup coil generates a voltage signal in response to the rotation of the distributor or crankshaft, providing critical information about the position of the engine. This signal is essential for the ignition module to determine when to fire the spark plugs.

The computer, or engine control unit, processes information from multiple sensors in the vehicle, including those related to engine speed and load. Based on this data, it can adjust the timing of the ignition, which the ignition module then executes.

The crankshaft sensor is another vital component that monitors the position and rotational speed of the crankshaft. This sensor feeds information to the ignition module, enabling it to trigger the spark at the correct time in the rotation cycle.

Given that all these components interact to control and trigger the ignition module through various signals, it’s clear that selecting all of the above as an answer accurately reflects the multifaceted nature of ignition control in modern vehicles.