LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM system generated a 'Defect Detected' alert on the GREEN circuit (Right Turn) for trailer V565578 at site DEN4. Based on the available work order data, the sensor result is classified as Inconclusive with a confidence of 42%. The technician found no active fault at the time of inspection, which could mean the defect was intermittent, self-resolved, or was a genuine false positive — but without photographic documentation or a TechAssist app verification screenshot, there is no independent evidence to confirm or deny the sensor's original alert. Intermittent connection issues that clear during inspection are a known failure mode in trailer lighting circuits and cannot be ruled out here.

Photo Evidence: No photos were attached to this work order. The LCM troubleshooting procedure explicitly requires photos of each light illuminated, a clear image of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these were provided. This is a significant documentation gap — without visual evidence, there is no way to independently verify the technician's claim that all lights were functional, that LED-compliant bulbs are installed throughout the GREEN circuit, or that the nosebox and Smart7 connections are in acceptable condition. The absence of photos alone is sufficient to flag this work order as non-compliant with the prescribed procedure.

Vendor Compliance: The vendor (TA) was partially compliant with the LCM troubleshooting procedure. Positively, the technician did reference use of the Phillips app (likely TechAssist) to verify all lights, checked Smart7 connections for tightness, jiggled the 7-way plug to test for intermittent connection issues, and noted that all GREEN circuit lights are proper LED lights. However, the vendor failed to provide any photos — neither illuminated circuit lights nor a nosebox wiring image — and did not supply a TechAssist app completion screenshot with 'Verified' status across all 5 circuits. Additionally, the technician's notes do not reference the specific feedback categories required by the procedure, and there is no indication that Phillips Connect Tech Support (PCT) was contacted to formally close the alert as a confirmed no-fault. As such, proper troubleshooting is marked false.

Repair Summary: No repairs were made on this work order. The line items reflect indirect charges, an ATIS (tire inflation system) troubleshooting entry that appears unrelated to the lighting alert, standard service labor (0.7 hrs / $107.14), and a shop supply/environmental fee ($4.73). The presence of ATIS-related line items on a lighting work order is unusual and may suggest the technician bundled unrelated work, or the line item coding does not accurately reflect the tasks performed. No parts were replaced, no wiring was repaired, and the alerting GREEN circuit was not physically repaired — consistent with a 'no fault found' outcome. Compliant brand assessment is marked N/A since no replacement parts were installed.

Key Concerns: Several concerns warrant follow-up on this work order. First and most critically, zero photos were submitted despite explicit instructions requiring illuminated light photos, a nosebox image, and a TechAssist verification screenshot — this is a clear vendor non-compliance issue that TA should be coached on. Second, the ATIS troubleshooting line item is mismatched to a lighting work order and suggests either incorrect line item coding or scope creep without proper documentation. Third, the technician did not contact PCT to formally confirm the no-fault finding, which means the LCM alert is not officially resolved through the prescribed channel and the sensor_result remains inconclusive. Fourth, the alert may reflect an intermittent fault (e.g., a marginal connection in the 7-way or nosebox that clears under static conditions) — the technician's note about jiggling the 7-way is appropriate but not conclusive. This trailer should be monitored for repeat GREEN circuit alerts in the near term.