LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM sensor flagged the YELLOW (Left Turn) circuit on trailer HV2200859 at site XMD2. Based on available evidence, the sensor result is assessed as 'Defect Detected' with moderate confidence (62%). The technician's own notes corroborate that the trailer's lighting system was indeed non-functional at the time of inspection — the BLACK circuit was found receiving no power, leaving all lights inoperable. This systemic power failure is highly consistent with conditions that would trigger an LCM alert. However, because the technician did not isolate or test the YELLOW circuit specifically, and never confirmed its status via the PCT TechAssist app, it is impossible to determine with certainty whether the YELLOW circuit independently had a defect or was simply offline due to the broader BLACK circuit power failure. Confidence is therefore tempered.

Photo Evidence: No photos appear to have been provided with this work order. There are no images of individual lights illuminated, no nosebox wiring photo, and no TechAssist app screenshot showing a green 'Verified' status for any of the five circuits. This is a significant documentation gap and represents a direct failure to comply with the LCM troubleshooting procedure. Without photographic evidence, it is impossible to visually confirm the nature of the defect, assess wiring condition at the nosebox, or validate that any circuit was in working order at the time of close.

Vendor Compliance: Vendor compliance with the LCM troubleshooting procedure is assessed as poor. The technician did not use the Phillips Connect TechAssist app, did not photograph each light circuit illuminated, did not provide a clear nosebox wiring photo, and did not provide structured feedback from the required failure category list. The tech notes are informal, incomplete, and indicate an open-ended investigation rather than a resolved repair. The instruction set explicitly required a TechAssist 'Verified' screenshot for all five circuits — none was provided. The work order was closed on 2026-05-11, yet the technician's own notes state they planned to return to diagnose the issue, suggesting the work order was closed prematurely or in error.

Repair Summary: No repairs were made to address the alerting YELLOW (Left Turn) circuit or any other lighting circuit. The line items billed reflect two generic 'LITE MECHANICAL' indirect charges, an Amazon PCT sensor activation item (potentially related to a TPMS sensor rather than LCM), standard service labor at a minimal 0.1 quantity, a shop supply fee, and lot service hourly labor. None of these line items correspond to a specific lighting repair — no bulbs, lamps, connectors, wiring harnesses, or LCM-related components were replaced. The billed items suggest the technician may have been on-site for a brief inspection only, with no corrective action taken on the lighting system.

Key Concerns: Several significant concerns are flagged with this work order. First, the work order was closed without the repairs or diagnostics being completed — the technician explicitly noted a return visit was needed, yet the WO is marked complete. Second, there is a circuit mismatch concern: the LCM alert was on the YELLOW circuit, but the technician identified a power issue on the BLACK circuit, and no confirmation was provided that these issues are related or that the YELLOW circuit was independently verified. Third, the presence of an 'AMAZON PCT SENSOR ACTIVATION' line item is anomalous and unrelated to a lighting circuit repair, raising questions about work order accuracy or possible line item misapplication. Fourth, the complete absence of photos and PCT app usage represents non-compliance with the mandated troubleshooting protocol. This work order should be flagged for vendor follow-up, re-inspection of the trailer, and mandatory TechAssist verification before closure is accepted.