ASE Engine Performance A8 Practice Test 2025 – Complete Exam Prep

When the starter solenoid clicks during testing in a no-crank condition, it indicates that the solenoid is receiving power and is attempting to engage the starter motor. However, just the presence of a click doesn't confirm that the starter motor itself is functioning properly. A clicking solenoid often points toward a potential issue with the starter motor itself or the control circuit that activates the starter.

If the starter is defective, it may not efficiently turn the engine despite the solenoid clicking. This scenario is common when the winding in the starter motor is faulty or when there are internal mechanical issues, such as a seized motor.

On the other hand, a problem in the starter control circuit could also prevent the starter from cranking the engine, even if the solenoid clicks. This could be caused by issues such as inadequate voltage supply, poor connections, or problems with the ignition switch that affects the signal sent to the solenoid.

Therefore, both scenarios—defective starter and issues within the starter control circuit—are valid conclusions when the starter solenoid clicks. The correct answer reflects the necessity to investigate both components further to diagnose the no-crank condition accurately.