If the MIL ON vehicle's functional test passes and the MIL turns OFF, how should the inspector record this?

When a vehicle's Malfunction Indicator Lamp (MIL) is on initially and then turns off after a functional test passes, the correct recording is to indicate that the MIL functional test has passed. This implies that the vehicle's systems have demonstrated proper functionality, confirming that the MIL does not indicate any active malfunctions at the time of the inspection.

This outcome is significant in the inspection process, as it suggests that the vehicle has no ongoing issues that require attention. The inspector's report should reflect this successful result, highlighting that the MIL status has changed appropriately under test conditions.

The other options do not accurately represent the situation's conclusion. Failing the vehicle for the MIL being on contradicts the outcome of the functional test being passed. Clearing Diagnostic Trouble Codes (DTCs) and then rechecking might be relevant in different scenarios where there’s uncertainty about the vehicle’s readiness, but it’s unnecessary here since the functional test has already confirmed everything is operating correctly. Aborting the inspection would not be applicable unless there were other critical issues present that impeded further testing. Thus, properly documenting the MIL functional test as passed showcases a positive result in the inspection process.