ASE Electrical and Electronic Systems (A6) Practice Test 2026 - Free ASE A6 Practice Questions and Study Guide

The scenario presented in the question assesses factors affecting the performance of a remote keyless entry system. The option indicating a bad passenger's door lock motor is not likely to prevent all doors from unlocking because the remote keyless entry system typically activates all doors simultaneously through a centralized locking control. If one specific door lock motor is faulty, it may prevent that particular door from unlocking, but it would not affect the locking mechanism for the entire system.

In contrast, a weak battery in the transmitter could diminish the signal strength, resulting in the system not responding. Interference from another radio transmitter could disrupt the signal entirely, affecting all doors. A blown circuit breaker would cut off electrical power to essential components involved in the unlocking process, preventing all doors from responding to the remote signal. Therefore, the passenger's door lock motor, being a localized issue, would not result in a total failure of the remote keyless entry system.