LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM system flagged the YELLOW (Left Turn) circuit on trailer HV2603933 at site RFD2, indicating a potential lighting defect. Based on the available work order data, the sensor result is rated Inconclusive with a confidence of only 35%. The vendor's narrative claims a TechAssist app check was completed and all circuits were verified, which would nominally support a 'no defect found' conclusion — but the complete absence of relevant line items, no PCT confirmation reference, and no verifiable documentation prevent any firm determination. The sensor may have generated a valid alert that was simply not properly investigated, or the defect may have been transient; there is insufficient evidence to rule either way.

Photo Evidence: No photos were attached to this work order for independent review. The technician notes state that pictures were taken and uploaded through the TechAssist app ('uploaded all pictures'), but these are not accessible or verifiable within the work order itself. There is no nosebox wiring photo confirmed, no images of each individual light illuminated, and no TechAssist screenshot showing green 'Verified' status beside all five circuits. As a result, the photo evidence requirement must be assessed as Not Met. This is a significant compliance gap — photo documentation is a core deliverable of the LCM troubleshooting procedure and cannot be waived based on a technician's verbal claim alone.

Vendor Compliance: Vendor compliance with the prescribed LCM troubleshooting procedure is poor. While the notes do reference use of the TechAssist app and imply circuit verification, there is no structured feedback using any of the required expected feedback categories (e.g., 'no defect found (confirmed with PCT)', 'full light circuit failure', etc.). The procedure explicitly requires a screenshot showing green 'Verified' status for all five circuits — this was not provided. The notes are vague, informal, and contain multiple typographical errors suggesting minimal care in documentation. There is also no indication that PCT was called or that a formal reference number was obtained, which would be required for a compliant 'no defect found' outcome.

Repair Summary: No repairs were made to the lighting system. The three billable line items consist of a speed sensor activation (PCT Sensor Activation — likely a TPMS or telematics sensor unrelated to lighting), a minimal 0.1-hour standard service labor charge, shop supply/environmental fee, and 0.5 hours of lot service hourly labor. None of these items correspond to any lighting component — no bulbs, lamp assemblies, wiring harnesses, connectors, or nosebox components were replaced or repaired. The faulted YELLOW (Left Turn) circuit received no documented corrective action. The billing profile appears misaligned with the stated scope of an LCM lighting inspection.

Key Concerns: Several red flags are present in this work order. First, the line items are entirely unrelated to the faulted lighting circuit — a speed sensor activation on a lighting WO is anomalous and may suggest the vendor is bundling unrelated charges or worked on the wrong system. Second, the technician notes include multiple spelling errors and very sparse detail, suggesting the final notes were entered hastily or by administrative staff rather than the performing technician. Third, there is no PCT confirmation, no structured troubleshooting feedback, and no verifiable photo evidence. Fourth, the work order took multiple days and technician visits (notes reference 'will be onsite tomorrow' and 'will be onsite today') before a vague 'complete' was logged — this delay pattern with no substantive repair outcome warrants scrutiny. This WO should be flagged for vendor invoice review and a follow-up inspection of the YELLOW circuit on HV2603933 is recommended.