LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM alert on the BLACK circuit (Clearance / License Plate) is assessed as *Defect Detected* with moderate-to-high confidence (72). The technician's own notes confirm a dim license plate light was observed during the inspection visit, which is a condition the LCM system is specifically designed to detect. A dim light on the LP/Clearance circuit is a legitimate electrical anomaly — reduced current draw or partial LED failure — consistent with what the BLACK circuit sensor would flag. Confidence is not higher because the tech initially reported 'all lights properly working,' which introduces some ambiguity before he later walked back that assessment by calling out the dim LP light as a pending defect.

Photo Evidence: No photos are referenced, attached, or described in the work order data. The LCM troubleshooting procedure explicitly required photos of each light illuminated, a clear nosebox wiring photo, and a TechAssist app screenshot showing green 'Verified' status beside all five circuits. None of these deliverables appear to have been provided. This is a significant documentation gap and represents a failure to meet the minimum photo evidence standard required by the LCM troubleshooting protocol.

Vendor Compliance: Vendor compliance with the LCM troubleshooting procedure is partial at best. On the positive side, the technician did log into the Phillips Connect app and activated the sensors, indicating PCT app usage. However, the vendor did not provide the required TechAssist app completion screenshot showing green 'Verified' status for all five circuits. No photos of illuminated lights or nosebox wiring were submitted. The technician's notes are informal and lack structured feedback from the required defect category list provided in the work order instructions. The procedure calls for specific, categorized observations — instead, the tech provided a casual narrative. Additionally, the line items submitted are mismatched: they reference tire pressure monitoring sensors and aerodynamic device labor categories, which are entirely unrelated to a lighting circuit inspection, suggesting the work order was coded incorrectly.

Repair Summary: No repairs were made to the alerting BLACK circuit. The technician explicitly noted that the LP light is dim and that the unit will need to be 're-dropped' (returned to the shop) for the LP light out/dim issue. The work completed during this visit was limited to sensor activation and a light function check — no parts were replaced on the lighting system. The line items billed include a PCT sensor activation, standard service labor (0.1 hr), shop supply fee, and lot service hourly labor (0.5 hr), none of which correspond to a lighting repair. The alerting circuit defect remains open and unresolved.

Key Concerns: Several significant concerns are flagged for this work order. First, the defect was identified but not repaired — the trailer needs to return for LP light correction, meaning a follow-up WO should be expected and tracked. Second, all line items are miscategorized under tire/TPMS and aerodynamic device categories rather than lighting, which could cause issues with reporting accuracy and warranty tracking. Third, no required photos or TechAssist verification screenshots were submitted, making it impossible to independently verify circuit condition or confirm PCT compliance. Fourth, the initial claim that 'all lights are properly working' followed immediately by a note about a dim LP light is contradictory and suggests the tech may have rushed the inspection. Fleet reviewers should ensure a follow-up work order is created specifically for the LP light replacement and that the vendor submits proper photo documentation at that time.