LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

no defect found (confirmed with PCT)

Sensor Verdict: The LCM system generated an alert on the RED (Brake) circuit for trailer V502508 at site DEN4. Based on the totality of evidence — vendor notes, PCT app screenshots, and photos — the sensor alert did not correspond to a confirmed, persistent defect at the time of inspection. Confidence is rated at 72 rather than higher because the photos do not individually capture each brake light illuminated in a dedicated verification sequence, and the LCM alert itself is real data suggesting at least a transient fault condition occurred. It is possible the alert was triggered by an intermittent connection or momentary voltage drop that self-resolved.

Photo Evidence: The submitted photos include: (1) TC_07780 and TC_07781/TC_07782 — unit ID shots of trailer V502508 from the front corner, confirming asset identity; (2) TC_07783 and TC_07784 — amber midturn/marker lights on the curbside and roadside, both illuminated and appearing functional; (3) TC_07785 and TC_07786 — rear corner views showing the red brake/stop/tail lights illuminated on both sides, appearing intact and operational with no visibly burned-out LEDs; (4) TC_07787 — Oregon permanent plate 36416 confirming the license plate light area; (5) TC_07788 — rear door view showing both rear light clusters illuminated, no obvious damage; (6) TC_07789 — rear undercarriage view showing the license plate light bracket area; (7) TC_07790 — nosebox/junction box photo showing wiring connections, with what appears to be a moderately complex wiring harness; (8) IMG_8222 — Gateway Details screenshot from the Phillips Connect app confirming gateway V502508, Blue/Main Power at 12.535V and Brown/Master at 12.49V, with sensors listed including ATIS Lamp and ATIS Regulator (noted as needing attention for 10 IDs); (9) IMG_8223 — Sensor Details screenshot showing all five circuits (Red, Green, Yellow, Brown, Black) marked as 'Verified' with 'No data' and 'No defects' for each. The TechAssist PCT completion screenshot is present and shows green verified status across all circuits. Notably, dedicated photos of each individual light actively illuminated in isolation are not provided — the brake lights appear lit in general rear-view shots but there is no systematic per-light photo documentation as the procedure ideally requires.

Vendor Compliance: The vendor demonstrated reasonable compliance with the LCM troubleshooting procedure. The Phillips Connect TechAssist PCT was used, and the app screenshot (IMG_8223) confirms all five circuits were verified with green 'Verified' status. A nosebox/wiring photo was provided (TC_07790), though the image quality and angle make it difficult to perform a thorough assessment of individual wire conditions. The vendor notes, while poorly written and containing numerous spelling errors, communicate the key findings: no issues found, voltage is good in the Smart 7, all wires connected correctly, and all circuits verified on the Phillips app. The vendor did not provide the structured feedback categories as explicitly requested in the troubleshooting procedure (e.g., stating 'no defect found — confirmed with PCT' in those exact terms), but the substance is present. The overall documentation quality is below standard due to grammar/spelling issues and lack of per-light illuminated photos.

Repair Summary: No repairs were made to the lighting system. The line items consist solely of two indirect electrical charges, a PCT sensor activation charge, a small standard service labor charge (0.1 hr at $109.90/hr), a shop supply/environmental fee ($3.05), and 0.5 hours of lot service labor ($75.00). No parts were replaced, no connectors were repaired, and no wiring work was performed. The alerting RED (Brake) circuit was not physically repaired, which is consistent with a no-fault-found outcome. The PCT sensor activation line item is appropriate for this type of inspection.

Key Concerns: Several items warrant attention. First, the Gateway Details screenshot (IMG_8222) shows the ATIS Lamp sensor as 'Not Connected / Unverified' and the ATIS Regulator as 'Connected' but flagged as needing 10 IDs to be verified — these sensor anomalies were not addressed or explained in the vendor notes, and could be related to the original LCM alert trigger. Second, the nosebox photo (TC_07790) shows a visibly busy and somewhat disorganized wiring bundle that deserves closer scrutiny; while the vendor states all wires are connected correctly, the image alone does not provide high confidence in wiring integrity. Third, the overall documentation quality from the vendor is poor, with significant spelling errors throughout the notes, which reduces confidence in the thoroughness of the inspection. Fourth, there are no individual, isolated photos of each light in the RED circuit specifically illuminated as a brake light (with brake pedal applied), which is the most critical circuit for this alert. Fleet reviewers should monitor this trailer for repeat LCM alerts on the RED circuit, as unresolved intermittent faults often recur.