LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM alert on the BLACK (Clearance/License Plate) circuit is confirmed as a legitimate defect detection with high confidence (92%). The technician discovered two distinct failures on this exact circuit — a physically missing top right front marker/clearance light and an inoperative license plate light — both of which fall squarely within the BLACK circuit's scope. The physical absence of the marker light would produce a clear open-circuit or load-drop signature detectable by the LCM sensor, lending strong credibility to the alert. No contradictory evidence was found in the notes or line items.

Photo Evidence: No photos were provided or referenced in this work order submission. The LCM troubleshooting procedure explicitly requires photos of each illuminated light in the circuit, a clear image of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these documentation requirements appear to have been fulfilled. This is a significant compliance gap. While the technician noted using the Phillips app to verify repairs, no screenshot evidence was submitted to corroborate this claim. The absence of photographic documentation prevents independent confirmation of repair quality and final circuit status.

Vendor Compliance: Vendor compliance with the LCM troubleshooting procedure is partial at best. On the positive side, the technician did report using the Phillips TechAssist app post-repair to verify all lights and circuits, which aligns with the procedural requirement. However, the procedure also requires photos of each illuminated light, a clear nosebox photo, a TechAssist completion screenshot with all 5 circuits showing green 'Verified,' and documented feedback using the defined expected feedback categories. None of these were submitted. The technician's notes are informal and lack structured feedback from the required category list (e.g., 'light missing' and 'light failure' were the applicable categories here but were not formally cited). Proper troubleshooting is assessed as false due to the missing documentation, despite the apparent diligence in the physical repair work.

Repair Summary: The repairs made were directly relevant to the alerting BLACK circuit. The technician replaced one missing marker/clearance light (with a grommet), replaced the license plate mount with light, and replaced a pigtail with new butt splice connectors — addressing both a missing lamp and what appears to have been a damaged or degraded wiring connector. Two marker/clearance lamp assemblies are listed in the line items (Qty: 2.0), though notes only explicitly mention one missing marker light; this may reflect a paired replacement or a discrepancy worth noting. A PCT sensor activation line item also appears, suggesting a tire pressure monitoring sensor was activated during the same visit — likely a separate issue unrelated to the LCM alert. No brand information was provided to confirm compliant lamp use.

Key Concerns: Several items warrant attention. First, the complete absence of photos is the most significant documentation deficiency — this is a core requirement of the LCM procedure and leaves no visual audit trail. Second, the line item quantity of 2 marker/clearance lamps while notes only reference one missing light is a minor discrepancy that could indicate over-billing or an undocumented second repair. Third, the inclusion of a PCT sensor activation (tire pressure) as a line item on a lighting work order is unusual and may indicate scope creep or charge bundling on a lighting-specific WO. Finally, the pigtail replacement adds a 'wiring damage' or 'damaged connector' dimension to this repair that was not captured in any structured feedback category — a complete failure subcategory would arguably be 'light missing' plus 'damaged connector.' Overall, the physical repair appears sound and the sensor alert was valid, but documentation quality must be improved for future submittals.