LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM system generated an alert on the BLACK circuit (Clearance / License Plate) for trailer WV2501425 at site IGQ2. Based on the available evidence, the sensor result is rated Inconclusive with a confidence of only 35%. The technician's notes claim the unit was inspected with the Phillips app and declared ready for service, which could suggest no defect was present at the time of inspection. However, the absence of required documentation, the self-acknowledged missing photos, and a 'Cause TBD' notation prevent any definitive validation of the sensor's alert or its dismissal. It is possible the alert was transient (e.g., triggered during a hostler move where the unit was TDR'd out), but this cannot be confirmed.

Photo Evidence: No photos were provided or attached to this work order. The technician's own notes explicitly acknowledge 'missing app photos,' and no TechAssist app completion screenshot showing green 'Verified' status for each of the five circuits was submitted. Without photographic evidence of each light illuminated, a nosebox wiring photo, or a TechAssist verification screenshot, it is impossible to visually confirm the condition of the BLACK circuit or any other lighting circuit. This represents a critical documentation gap that renders the inspection unverifiable.

Vendor Compliance: The vendor (TA) did not follow the LCM troubleshooting procedure in a compliant manner. While the technician states the Phillips TechAssist app was used, there is no screenshot or app output to corroborate this claim. The required deliverables — photos of each illuminated light, a clear nosebox wiring photo, and a TechAssist completion screenshot showing 'Verified' for all five circuits — are entirely absent. The tech notes 'complaint missing app photos cause TBD,' which is a self-admission of non-compliance. The troubleshooting is therefore marked as improper. The unit also spent time on a dock door dry run due to inaccessibility, suggesting servicing was delayed and potentially rushed.

Repair Summary: No repairs were made to the lighting system or the BLACK (Clearance / License Plate) circuit. The line items billed on this work order are entirely unrelated to the lighting complaint: they include a tire/TPMS speed sensor activation, standard service labor, shop supply fees, and lot service hourly labor. None of these address the faulted circuit. The alerting circuit was not repaired, and no lighting parts (bulbs, connectors, wiring, or nosebox components) were replaced. The compliant brand field is marked N/A as no lighting components were installed.

Key Concerns: Several significant concerns are flagged with this work order. First, there is a complete mismatch between the faulted circuit (BLACK — lighting) and the line items billed (TPMS/tire sensor activation), suggesting this work order may have been incorrectly bundled or that unrelated work was performed under an LCM-generated WO. Second, the unit was noted as 'TDR'd out during a hostler move,' which may explain the transient LCM alert, but this was never formally investigated or confirmed. Third, the 'Cause TBD' notation with no follow-up is unacceptable for a completed work order. Fourth, the unit's frequent location changes (PS965 → DD120 → PS515 → DD dry run) suggest operational confusion that may have delayed or compromised the inspection. This work order should be flagged for vendor follow-up, photo submission, and potential re-inspection of the BLACK circuit.