In automotive computer diagnostics, what type of monitor is always active while the engine is running?

In automotive computer diagnostics, what type of monitor is always active while the engine is running?

• A. Real-time monitor
• B. Continuous monitor
• C. Passive monitor
• D. Intermittent monitor

Answer: (B)

In automotive computer diagnostics, monitors are the tests the ECU runs to verify how well a system is functioning. A continuous monitor is designed to stay active every time the engine is running, continuously checking a subsystem as the engine operates. This ongoing surveillance means faults can be detected immediately, and the ECU can log a diagnostic trouble code and illuminate the MIL if something is wrong. Other types aren’t active all the time: real-time monitors refer to displaying live data rather than ongoing tests; passive monitors don’t actively test systems; intermittent monitors operate only under certain conditions or after specific driving cycles and aren’t always active. Because continuous monitors are always on during engine operation, they provide constant verification of function.

In automotive computer diagnostics, monitors are the tests the ECU runs to verify how well a system is functioning. A continuous monitor is designed to stay active every time the engine is running, continuously checking a subsystem as the engine operates. This ongoing surveillance means faults can be detected immediately, and the ECU can log a diagnostic trouble code and illuminate the MIL if something is wrong.

Other types aren’t active all the time: real-time monitors refer to displaying live data rather than ongoing tests; passive monitors don’t actively test systems; intermittent monitors operate only under certain conditions or after specific driving cycles and aren’t always active. Because continuous monitors are always on during engine operation, they provide constant verification of function.