An interlock is an alcohol interlock that controls whether a vehicle can start based on factors such as the result of the driver's breath test. The handset is the unit the driver blows into for the test, and the control box processes that result and the state of the vehicle connection. When a device logs an alarm or an abnormal event and is then sent for servicing, the manager has to decide, once the vehicle comes back, whether the open item in the management log can be closed as well.
Here, the device's event log and the management log play different roles. For example, the AF-i1 product information explains that the device stores events related to vehicle ACC, engine start, test results, and tampering, and that logs can be managed and downloaded with dedicated software. The management log, by contrast, is a document or system that tracks what the manager still needs to resolve. So rather than closing an open alarm just because the servicing is reported as done, it is safer to base the decision on whether the question raised by the original alarm has been answered.
Separate service completion from alarm closure
Service completion means the technician carried out certain inspections, replacements, or connection checks. Alarm closure is the manager's judgment, based on that work, that nothing more needs to be checked or done about the original alarm. If both judgments go into the same field, cases where the work is finished but the cause is still unconfirmed can be hidden.
For example, even if the service report says vehicle power checks were completed, whether those checks relate to the cause of the original alarm is a separate question. Conversely, if the post-service findings fully explain the cause of the alarm and the action taken, the work completion and the case closure can be recorded on the same day. What matters is not the date but the content that supports each judgment.
Recheck the answer the original alarm called for
When you open an unresolved item, first write down specifically what was observed. Rather than just noting "device fault," link which vehicle it was, which alarm or test- or start-related event was found, and when the vehicle was sent for servicing. That way, when the service results arrive, you can compare them with the problem first raised.
Next, split the service records into the work actually performed, the facts found during inspection, and the points that could not be checked. If the report only uses broad wording such as "inspection complete," you can follow up to ask what exactly was checked in relation to the original alarm. The key is that the manager does not fill the gaps with guesses and turn an unconfirmed cause into a normal status.
| What to look at in the management log | Question to decide | Action to record or carry forward |
|---|---|---|
| Original alarm and circumstances | What was first observed? | Link the vehicle, time of occurrence, alarm content, and reason for the report |
| Service results | What work and checks were actually carried out? | Attach the scope of work and the findings to the original alarm |
| Remaining checks | Is any part of the original question still unanswered? | Assign an owner and the points to confirm, and keep the item open |
| Closure decision | Is any further action still pending? | Record who decided, when, and what was communicated to the driver |
Set closure criteria with a hypothetical example
Suppose, in a hypothetical case, an interlock-related alarm occurred on a vehicle and was logged, and after servicing the result came back as "vehicle power checks completed." The only observed fact here is that power-related checks were performed. If the records do not show whether the original alarm was related to the power state, or whether the same symptom was absent after the checks, there is not enough basis to conclude that the cause has been resolved.
In this situation, the interpretation could be "service work completed, but checks needed for alarm closure remain." A possible action is to ask the technician how the original alarm relates to the inspection results and whether further checks are needed, and then link that answer to the management log. The completion point is not the wording that power checks were done, but the point at which the records show an explanation of the original alarm and confirm whether the necessary follow-up checks are finished.
On the other hand, if the service records and follow-up checks consistently show what the original alarm was, what action was taken, and what was found, and no further action remains, the item can be closed. Even then, the original event stored on the device is not deleted. Instead, the management log links its conclusion to that event. The log is a record of what the device and vehicle registered at the time, while the closure mark is a management decision made after reviewing those facts.
If work remains, assign the next action instead of closing
If the cause is not confirmed or further inspection is scheduled, it is better to keep the item open and describe the "checks remaining" in specific terms. Writing down who will check what, and what answer will trigger a new closure decision, keeps the open item from sitting in a vague on-hold state. If a separate decision about using the vehicle is needed, confirm the relevant criteria apart from whether the log item is closed.
What you tell the driver should also distinguish the notice that work is done from the checks that remain. For example, you can record that the servicing is finished, that further checks are under way, and who will provide the next update. This way the manager does not lose track of unresolved questions, and the driver does not confuse work that is already done with checks that are still pending.
Treat events after closure as new items
After an item is closed, the same kind of indication or event may occur again. In that case, rather than rewriting the conclusion of the old item, register it as a new occurrence and, if needed, link the earlier service and closure records as reference material. The fact that it resembles an earlier alarm is not enough to confirm the same cause.
It is also best to avoid closing several items at once just because they have been open for a long time. For each item, check that the original alarm, the work done during servicing, the remaining questions, and the closure decision connect. Applying this standard lets you record every service completion without treating alarms that still have no answer as if they were resolved.
