When an engine is key-on and engine-off (KOEO), the EUI solenoids can be heard to rhythmically click in sequence. Which of the following is likely to be true?
A) a state of health (SOH) is being run
B) a failed EUI has been detected
C) system electrical failure
D) connect an EST to troubleshoot

Question

Quizplus · Accepted Answer

This rhythmic clicking of EUI solenoids during a KOEO condition is typically indicative of a self-test or diagnostic routine being performed by the engine's control system, known as a state of health (SOH) check.

When an Engine Is Key-On and Engine-Off (KOEO), the EUI